J_1_Specifications___Appx_A__Contract_Guidance_Drawings__MST_II_23JUN23.pdf

DISTRIBUTION STATEMENT D

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PERFORMANCE SPECIFICATION

260 FT MOBILE SHIP TARGET II

SPECIFICATION NUMBER P8028MST-260

15 FEBRUARY 2023

SEABORNE TARGETS TEAM

THREAT/TARGET SYSTEMS DEPARTMENT

NAVAL AIR WARFARE CENTER WEAPONS DIVISION

POINT MUGU, CALIFORNIA

DISTRIBUTION STATEMENT D: DISTRIBUTION AUTHORIZED TO DEPARTMENT OF DEFENSE AND U.S.

DOD CONTRACTORS ONLY (ADMINISTRATIVE AND OPERATIONAL USE, FEBRUARY 2022),

OTHER REQUESTS FOR THIS DOCUMENT SHALL BE REFERRED TO PEO SHIPS, PMS 300.

WARNING

THIS DOCUMENT CONTAINS TECHNICAL DATA WHOSE EXPORT IS RESTRICTED BY THE ARMS EXPORT

CONTROL ACT (TITLE 22, U.S.C. SEC. 2751, ET SEQ.) OR THE EXPORT ADMINISTRATION ACT OF 1979, AS AMENDED, TITLE 50, U.S.C., APP 2401, ET SEQ. VIOLATIONS OF THESE EXPORT LAWS ARE SUBJECT TO

SEVERE CRIMINAL PENALTIES. DISSEMINATE IN ACCORDANCE WITH PROVISIONS OF OPNAVINST

5510.161. DESTRUCTION NOTICE: DESTROY BY ANY METHOD THAT WILL PREVENT DISCLOSURE OF

CONTENTS OR RECONSTRUCTION OF THE DOCUMENT.

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TABLE OF CONTENTS

Section No. Title

042 General Administrative Requirements 070 General Requirements for Design and Construction 071 Access 073 Noise, Vibration and Resilient Mountings 074 Welding 076 Reliability 078 Materials 079 Stability 085 Drawings 096 Weight Control

100 Requirements for Hull Structure 111 Plating 115 Structural Stanchions 116 Hull Framing 120 Structural Bulkheads 130 Decks and Platforms 150 Deckhouse 170 Mast 180 Foundations 192 Structural Tightness

200 General Requirements for Propulsion Plant 202 Machinery Control 233 Propulsion Diesel Engines 241 Propulsion Reduction Gears 243 Propulsion Shafting 244 Propulsion Shaft Bearings and Seals 245 Propellers 259 Combustion Air and Exhaust Systems 262 Lubrication Systems

300 Requirements for Electric Plant 302 Electric Motors and Associated Electric Equipment 303 Protective Devices for Electric Circuits 304 Electric Cable 305 Electrical Designating and Marking 310 Power Generation 313 Storage Batteries and Chargers 314 Electrical Power Supply Conversion Equipment 320 General Requirements for Electric Power Distribution Systems 324 Switchboards and Power Panels for Electric Power and Lighting 331 General Requirements for Lighting Systems

400 Requirements for Command and Surveillance (C&S) Systems

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422 Navigation Lights 430 Requirements for Interior Communication Systems 432 Telephone Systems 436 Electrical Alarm, Safety and Warning Systems 439 Surveillance System

500 Requirements for Auxiliary Systems 503 Pumps 504 Instruments, Indicators and Alarms 505 Requirements for Piping Systems 507 Machinery and Piping Designating and Marking 508 Insulation for Machinery and Piping 512 Ventilation 521 Seawater Service Systems 528 Plumbing Drains, Plumbing Vents and Deck Drains 541 Fuel Systems 555 Fire Extinguishing Systems 561 Steering Gear 562 Rudders 568 Stabilization Tank 581 Anchor Stowage and Handling 582 Mooring and Towing Fittings 583 Lifesaving Equipment

600 Requirements for Outfit and Furnishings 602 Hull Designating and Marking 603 Draft Marks 604 Locks, Keys and Tags 605 Ratproofing 611 Hull Fittings 612 Lifelines, Guardlines and Guardrails 622 Ladders, Handrails and Gratings 624 Doors, Hatches, Scuttles and Manhole Covers 631 Painting 632 Metallic Coating 633 Cathodic Protection 634 Deck Covering 635 Thermal Insulation and Treatment of Compartments 636 Fixed Ballast 637 Protective Sheathing 670 General Requirements for Stowage 671 Special Stowage Arrangements

APPENDIX A Contract Guidance Drawings

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1 SCOPE

This specification defines the performance requirements for the design, development, and construction of the 2nd iteration of the Mobile Ship Target (MST).

2 REQUIREMENTS

(000) GUIDANCE AND ADMINISTRATION

(042) GENERAL ADMINISTRATIVE REQUIREMENTS

042a. GENERAL

1. These Specifications are for the building of the Mobile Ship Target (MST) II. These Specifications contain technical requirements and information relating to the construction of a self-propelled steel vessel fitted with an array of ISO containers.

042b. DEFINITIONS

1. As used throughout these Specifications, the following terms have meanings as indicated:

2. The term “Contractor” means the firm holding the prime contract with the Government for the detail design and shipyard industrial effort associated with the construction of the craft.

3. The term “Government” means the United States Government.

4. The term “Target” means the Mobile Ship Target II.

5. Wherever terms such as “as approved", “for approval", or "as required" are used without further qualification, the decision of a Regulatory Body representative is required. For items which are not covered by the Regulatory Bodies, the decision of the Government is required.

6. Where references such as "in accordance with Regulatory Body requirements" are designated, the drawings and design data required for inspection and certification shall be designed in accordance with the appropriate Regulatory Body agency requirements unless otherwise authorized by the Government.

7. The term "Regulatory Body requirements" means those rules, regulations and interpretations issued by the United States Coast Guard, cognizant Federal agencies, and the American Bureau of Shipping.

8. The term “Supervisor”, as used in these Specifications, means Naval Air Warfare Center Weapons Division, Pt. Mugu (NAWCWD). Under certain conditions, the duties of the Supervisor may be transferred to PMS300T of the Naval Sea Systems Command (NAVSEA); in which case, that activity becomes the Supervisor.

9. The term “commercial marine practice" means the construction of the Target to soundly conceived and engineered detailed plans incorporating specified marine quality components to ensure that the completed Target will perform to the intended mission.

10. The term “marine" or "marine quality" means that an item shall be constructed of materials unaffected by moisture, sea spray, extremes of temperature or other hazards of the marine

- 6 -environment and are designed and constructed to perform its intended function under marine operating conditions.

11. The term "as shown on the drawings" means the Contract Guidance Drawings listed in Table 042- 1.

12. Where the term "herein" is used, it means in any section of these Specifications.

13. ABS means American Bureau of Shipping.

14. AISI means American Iron and Steel Institute.

15. ANSI means American National Standards Institute.

16. ASTM means American Society for Testing and Materials.

17. AWS means American Welding Society.

18. CFR means Code of Federal Regulations.

19. IEEE means Institute of Electrical and Electronics Engineers.

20. NAWCWD means Naval Air Warfare Center Weapons Division.

21. NAVY means a designated United States Navy Representative.

22. SNAME means Society of Naval Architects and Marine Engineers.

23. USCG means United States Coast Guard.

042c. LAWS, CLASSIFICATION, RULES. REGULATIONS, STANDARDS AND CERTIFICATES

1. The Target, as delivered, shall comply with the applicable laws of the United States, the following requirements and standards of the various Regulatory Bodies and other standards, unless otherwise specified herein:

A. American Bureau of Shipping Marine Vessel Rules.

B. United States Coast Guard regulations defined in 46 CFR Subchapter C.

2. Descriptions given herein shall not be interpreted as being exhaustive on the subject, and any failure of the text to mention or elaborate on specific requirements shall not relieve the Contractor of the obligation of delivering an installation, which is acceptable to the Government.

Adherence to USCG requirements is mandatory with exemptions requiring Government approval.

3. If any item is specified in these Specifications, or in any other applicable Regulatory Body requirements, and it exceeds USCG or ABS requirements, the more stringent requirements shall be met.

4. Where inconsistencies exist between these Specifications and USCG requirements, the Regulatory Body requirements shall take precedence.

042d. REFERENCED DOCUMENTS

1. Documents that are referred to in these Specifications or in the documents referred to herein are termed "referenced documents". Referenced documents form a part of these Specifications to the extent specified.

2. Contract Guidance Drawing - A NAWCWD drawing identified as a "Contract Guidance Drawing" which illustrates function, performance and special features of the Target or its systems. A Contract Guidance Drawing does not necessarily depict, nor is it intended that it depict, all features and details of the systems and structures to which it relates.

3. First-Tier and Sub-Tier References - Any referenced document that is directly cited for use or application by an identifying number or name in these Specifications is a first-tier reference for

- 7 -each particular use or application for which it is cited. Any document that is cited in a first-tier reference, or in a document referenced therein, is a sub-tier reference. A document that is a sub-tier reference may also be a first-tier reference; it shall be considered first-tier only for those particular uses or applications for which it is cited as such. Contract Guidance Drawings are primarily utilized to provide the contractor with information. Contract Guidance Drawings, when referenced, shall be utilized by the contractor as general guidance and reference. Although the Performance Specification cites several Contract Guidance Drawings, they are not to be considered first or sub-tier references.

4. Government Specifications are specifications such as Federal (Fed. Spec.) and Military (Mil. Spec.)

that describe the technical requirements for items, materials or services required. Government Standards are documents identified as a Federal Standard (Fed. Std.) or Military Standard (Mil.

Std.) or by a 13-digit NAVSEA publication number that establish engineering and technical limitations and applications of items, materials, processes, methods, and design and engineering practices.

5. Government Standards are documents identified as a Federal Standard (Fed. Std.) or Military Standard (Mil. Std.) or by a 13-digit NAVSEA publication number that establish engineering and technical limitations and applications of items, materials, processes, methods, and design and engineering practices.

6. Industry Standards are documents issued by recognized non-Government organizations such as IEEE, ANSI and ASTM that establish engineering and technical limitations and applications for items, materials, processes, methods, design, and engineering practices.

7. Order of Precedence - In case of inconsistency between these Specifications and referenced documents, the following order of precedence applies:

A. These Specifications.

B. Other first-tier references.

C. Sub-tier references.

D. Contract Guidance Drawings.

8. Silence of one document with respect to details shown in another shall not be considered an inconsistency.

9. Order of Precedence of Specification Sections - The order of precedence between requirements of sections within these Specifications is dependent on the relative broadness of the requirements stated.

10. Requirements within a section that are applicable to the entire Target, such as "General Requirements for Design and Construction," state the broadest requirements and apply to all systems and equipment unless otherwise specified in the more detailed system sections, in which case the detailed system section requirements apply.

11. Specific requirements within a lead section, such as "General Requirements for Piping Systems," include the general or common requirements for a number of similar systems and are the next broadest category of requirements. Lead sections apply to systems and equipment in its grouping unless otherwise specified in detailed system sections.

12. Specific requirements within a detailed system section, such as "Seawater Service Systems", include the details of a particular system and are the most detailed requirements. Requirements in detailed system sections apply to the system specified in the detailed section. The omission in

- 8 -one section of applicable detailed requirements specified in another section shall not be considered an inconsistency.

13. Effective Issue - The term "effective issue" refers to the issue of a referenced document, as revised or amended, which, in accordance with the requirements herein, forms a part of these Specifications. Reference is made normally only to basic Government or commercial specifications, standards or drawing numbers, without prefix zeros or suffix letters or numbers which identify revisions or amendments.

14. Wherever a first-tier reference is identified by both its basic number and by issue, revision, or amendment date or designation, such identified issue shall be the effective issue for the particular use or applications cited. The effective issue of other referenced documents shall be that in effect of the signed contract award date.

15. Use of Other Than Effective Issues - The effective issues of referenced documents are those used by the Government in preparing these Specifications. Document issues other than the effective issues may be used, in accordance with the following procedures. In the event of the use of other than the effective issue, it shall be ensured that the item that is in accordance with a document other than the effective issue is not technically inferior to, and is interchangeable with, the equipment or component specified.

16. Where first-tier references are referred to by citing a particular issue, including those for which specific modifications are specified, approval shall be obtained to use any issue other than the particular issue cited.

17. Where first tier references are referred to only by the use of the basic identification name or number without citing a specific issue date or designation, a later issue may be used including a superseding issue of a different number or, subject to prior approval, an earlier issue may be used including a superseded issue of a different number rather than the effective issues.

18. Effective issue for sub-tier references shall be those in effect on the date of the first tier referenced document. Deviations from this date shall follow the same procedure described for first tier references.

042e. DELIVERY

1. At the time of delivery, systems shall meet the performance requirements specified herein and the Target shall be clean in all respects.

2. An opportunity will be afforded to the Contractor to witness, inspect and comment on the operation of the Target and its components during the Guarantee Period.

3. In the event that deficiencies are discovered during the Guarantee Period, an opportunity will be afforded to the Contractor to witness, inspect and comment on such deficiencies.

042f. DRAWING PACKAGE

1. The following Contract Guidance Drawings form a part of this Specification to the extent specified in Section 042d. Whenever reference is made in this specification to use of terms such as "as shown on the drawings," it refers to the drawings listed in Table 042-1. The system layouts depicted in the Contract Guidance Drawings are not necessarily designed to the requirements listed in this specification. When using Contract Guidance Drawings to determine the

- 9 -arrangement and architecture of various systems, the contractor shall ensure the systems and overall platform satisfy the requirements listed within this Performance Specification.

TABLE 042-1

CONTRACT GUIDANCE DRAWINGS

NAWCWD No. Title

CONTRACT GUIDANCE DRAWINGS

TDL-8000 Index of Plans TDL-8001 Lines Plan & Table of Offsets TDL-8002 Curves of Form & Cross Curves of Stability TDL-8003 General Arrangement TDL-8004 Inboard & Outboard Profiles TDL-8005 Deck Structure TDL-8006 Bow Structure TDL-8007 Midship Structure & Typical Watertight Bulkhead TDL-8008 Stern Structure TDL-8009 Deck Fittings and Anchor Handling Arrangement TDL-8010 Deckhouse Structure TDL-8011 Mast Arrangement and Details TDL-8012 Engine Room Arrangement TDL-8013 List of Major Equipment TDL-8014 Propulsion Shafting Arrangement TDL-8015 Rudder Details TDL-8016 Steering System Arrangement TDL-8017 Bilge, Ballast & Firemain Diagram TDL-8018 Propulsion Controls System & Remote Interface Diagram TDL-8019 Sea Water Cooling System Diagram TDL-8020 Fuel and Lube Oil System Diagram TDL-8021 Fire Suppression System Diagram TDL-8022 Engine Room Ventilation Diagram TDL-8023 Diesel Exhaust Diagram TDL-8024 Electrical System Load Analysis TDL-8025 Electrical One-line Diagram TDL-8026 24VDC System Diagram, Power, Lighting, & Control TDL-8027 Construction Weight Estimate

(070) GENERAL REQUIREMENTS FOR DESIGN AND CONSTRUCTION

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070a. GENERAL

1. The MST shall be classed to American Bureau of Shipping (ABS) Marine Vessel Rules (MVR). All references to ABS MVR used herein shall be to the documentation at the date of award. The vessel shall be designed for unrestricted service with the following ABS Notations:

✠A1, ✠AMS, CIRCLE E, GOVERNMENT SPECIAL PURPOSE

2. The Target shall have the following physical characteristics:

A. Length, Overall: 264’-5” +/- 30’-0” B. Beam, Overall: 26’-0” +/- 5’-0” C. Design Draft: 6’-0” +/- 2’-0”

3. The Target shall be of welded steel, mono-hull construction.

4. The Target shall have a minimum service life of 10 years.

5. Material, equipment and machinery required by these Specifications shall be installed or stowed by the Contractor. All material and equipment shall be new.

6. Physical, logical and electrical interfaces shall be designed to non-proprietary open standards and protocols to enable interoperability, adaptability, upgradeability, and configurability.

7. The Target shall be designed using the Imperial system of measurement to the extent indicated in these Specifications. Design calculations shall be performed using Imperial units. New documents and drawings developed in relation to the design and construction of the Target shall express numerical data including dimensions and performance characteristics in terms of standard Imperial units.

070b. TARGET PERFORMANCE

1. The Target shall have a range of operational speeds as defined below in Table 070-1.

Table 070-1

Maneuver Speed Duration (8 Total) Hrs Percentage knots hours %

Sustained Speed 12.0 0.4 5.0 High Speed Maneuver 10.0 0.8 10.0 Endurance Speed 8.0 3.2 40.0 Loiter 5.0 1.2 15.0 Drift 0.0 2.4 30.0 Total 720 100.0

2. The Target shall be capable of a sustained speed of no less than 12.0 knots when in the full load, End of Service Life condition, per Section 096, at 95% of the maximum continuous rating (MCR), per Section 233 in calm seas on the Point Mugu Sea Range, and accounting for conditions and margins consistent with NAVSEA DDS-200.1 Rev1.

3. The Target shall be capable of operating for a minimum of 12 hours with both MPDE’s and a single SSDG online. The 12 hour duration shall be used for determining emergency loads.

4. Stabilization performance shall be per Section 568.

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5. The Target shall be capable of meeting trim and list requirements stated in Section 096 in all loading conditions using a liquid ballast system. The installation of fixed semi-solid ballast is permitted to meet stability requirements. The Target shall be delivered with the fixed semi-solid ballast installed, if required.

6. Foundations shall be sufficient to restrain equipment without damage or distortion under the hull motions listed below. Equipment and systems shall operate satisfactorily up to Sea State 3 and remain intact up to Sea State 5. Explicit Sea State definitions are referenced in Section 070e. In the structural design, the following assumptions shall apply:

A. Roll motion is plus or minus 30 degrees with a full period of 5 seconds.

B. Pitch motion is plus or minus 3 degrees with a full period of 6 seconds.

C. The rolling and pitching axes lie at the center of gravity.

D. Vertical acceleration is 0.22g (in addition to gravity).

E. Lateral acceleration is 0.15g (forward/aft and athwartships).

070c. REQUIREMENTS FOR EQUIPMENT AND MACHINERY

1. Equivalents to equipment specified by manufacturer's name, make and model number may be proposed. In order for the proposed item to be acceptable, equipment equivalency documentation shall be prepared and submitted for approval. Approval will be based on the following:

A. The item meets the specified performance requirements and applicable Regulatory Body requirements.

B. It possesses similar:

I. Availability II. Dimensions III. Suitability for marine service IV. Material V. Maintenance features VI. Time in service VII. Vendor-furnished documentation and service support VIII. Life cycle cost or maintenance costs IX. Interface characteristics

C. An exception to these criteria occurs when superior characteristics are demonstrable and are to the advantage of the Target's mission, the substitute item would be acceptable, provided specified performance requirements are met. In addition to these general requirements, specific requirements may be designated within the sections of these Specifications which require the use of the item or equipment.

070d. INSPECTION AND MATERIAL IDENTIFICATION

1. Material and equipment purchased, manufactured or assembled, and work performed under the Contract shall be inspected by the Contractor prior to submission to the Government to verify conformance with the Contract requirements. The Contractor shall offer to the Supervisor only

- 12 -those supplies determined by the Contractor to conform to the requirements. The Supervisor will reject defective or improper materials, equipment and workmanship.

2. The Contractor shall establish and maintain a system of material identification, including handling and inspection, which will ensure the use of specified materials and information concerning their quality and use.

3. Acceptance of material and equipment, including those items accepted by a certificate of compliance, will not waive the right of the Supervisor to reject any items subsequently found not to be in accordance with specifications. The Contractor shall report to the Supervisor any defective material and equipment which is discovered.

4. Material and equipment, which has been inspected and passed, shall not be diverted from its intended purpose unless requested by the Supervisor.

070e. CLIMATIC CONDITIONS

1. The vessel shall be fully capable in the following conditions:

A. In an ambient air temperature range of 0 to 35 °C, relative humidity through 100%.

B. In seawater temperature of 5 to 25 °C.

2. Equipment and machinery internal to the ship shall be rated at no less than the compartment design temperature in which installed. The machinery necessary to operate the ship’s machinery plant shall be capable of starting and operating continuously over the ambient temperature range of 0 to 49 °C.

3. Sea States shall be defined in Table 070-2. The wave spectra for all cases shall be assumed to be Bretschneider. The maximum significant wave height, mean sustained wind speed, and most probable modal wave period associated with each sea state shall be used.

Table 070-2

Significant Wave Height (m)

Sustained Wind Speed (knots)*

Modal Wave Period

Sea State

Number

Range Mean Range Mean Percentage Probability of

Sea State

Range** Most Probable***

0 - 1 0 - 0.1 0.05 0 - 6 3 0.71 - - 2 0.1 - 0.5 0.3 7 - 10 8.5 6.88 3.3 - 12.8 7.5 3 0.5 - 1.25 0.88 11 - 16 13.5 23.97 5.0 - 14.8 7.5 4 1.25 - 2.5 1.88 17 - 21 19 28.11 6.1 - 15.2 8.8 5 2.5 - 4 3.25 22 - 27 24.5 20.87 8.3 - 15.5 9.7 6 4 - 6 5 28 - 47 37.5 13.30 9.8 - 16.2 12.4 7 6 - 9 7.5 48 - 55 51.5 6.12 11.8 - 18.5 15.0

> 7 > 9 > 9 > 55 > 55 0.05 14.2 - 23.7 16.4 *Ambient wind sustained at 19.5m above surface to generate fully-developed seas. To convert to another amplitude, H2, apply V2 = V1(H2/19.5)1/7.

**Minimum is 5 percentile and maximum is 95 percentile for periods given wave height range.

***Based on periods associated with central frequencies included in hindcast climatology

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070f. CERTIFICATIONS

1. The following certificates are to be supplied to the Target at the time of delivery:

A. Certificates required by ABS Classification and Flag State Authority.

B. International Convention on the Control of Harmful Anti-Fouling Systems on Ships issued by

ABS.

C. An International Tonnage Certificate of Admeasurement, in accordance with the requirements of 46CFR69 issued by ABS.

D. IMO International Convention on Load Lines, 1966 issued by ABS.

E. ABS Statement of Compliance for Institute of Electrical and Electronic Engineers (IEEE)

Standard 45 series.

F. ABS Statement of Compliance for EPA regulations, as applicable.

G. ABS Statement of Compliance for 2008 IMO Code, SPS Code Damage Stability.

H. ABS Statement of Compliance for SNAME T&R 2-29A.

(071) ACCESS

071a. GENERAL

1. Compartments, usable spaces and voids within the Target shall be provided with doors, hatches, scuttles, manholes, arches and removable plates required to afford the most convenient access without compromising structural integrity or efficient arrangement.

2. Access shall be provided in foundations to permit preservation of the foundation and of the deck or other structure beneath. Accessibility for inspection and maintenance of equipment supported shall be provided.

3. Passageways formed by the arrangement of items such as equipment and fixtures shall have clear widths not less than 30 inches.

4. Each compartment shall have two means of escape.

5. Manholes shall be provided for access to compartments, voids and pockets not provided with other means of access.

6. Machinery, piping, operating rods, brackets and other items that restrict passages or overhead clearance or are a source of danger to personnel shall be kept clear of normal routes of access.

Where such installations cannot be avoided without precluding normal and safe operation, maintenance or repair, guards or protective padding and appropriate warning labels shall be provided.

7. Equipment shall be installed to permit access for maintenance, repair or removal. Removal routes, access areas, lifting devices, and take down joints for large equipment and components where the size of the item or component to be shipped or unshipped exceeds door or hatch sizes shall be present in the Target. BERPs, WERPs, and hatches shall be arranged to allow for removal of major equipment, to include the reduction gears, MPDE’s, and SSDG’s at a minimum, onto the weather deck.

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(073) NOISE, VIBRATION AND RESILIENT MOUNTINGS

073a. GENERAL

1. During all operational conditions the hull, superstructure, and mast vibration shall be within the limits referenced in SNAME T&R Bulletin No. 2-29A.

2. Ventilation fans shall be resiliently mounted.

3. Clearance shall be provided to prevent the unit from striking structure, adjacent fixed or resiliently mounted units, or other fixed objects during maximum defections of the unit.

4. Flexible connections shall be used for attachments to resiliently mounted equipment.

5. Welding or flame cutting in way of mountings shall be finished before installation of the mountings.

6. The Deck House shall meet an ambient noise level limit not to exceed 65 dB(A) using USCG

Navigation and Vessel Inspection Circular 12-82 as guidance. Acoustic insulation in accordance with SNAME T&R Bulletin No. 3-37 shall be installed, as required, to meet the airborne noise performance requirements.

7. Flexible Joints shall be used to decrease transmission of noise through ducts, and to allow for relative motion between resiliently mounted ventilation fans and the ducts, flexible joints shall be installed at both the suction and discharge of ventilation fans.

8. Reciprocating engine vibration levels shall be in accordance with the torsional vibration requirements of ANSI S2.27.

(074) WELDING

074a. GENERAL

1. All welding procedures shall be in accordance with the Structural Welding Code, AWS D1 .1.

2. Welding shall be sequenced such that thermal deformation of the structure is kept to a minimum.

3. All welding shall use electrodes appropriate for the steel alloys being joined.

4. The Gas Metal Arc Welding Short Circuiting Transfer (GMAC-Short Arc) process shall not be used for welds in primary Target structure.

5. Continuous welding shall be used for structure exposed to the weather.

(076) RELIABILITY

076a. GENERAL

1. The selection and installation of commercial systems and equipment shall be based on reliable service life histories and meeting industry standards recognized by the Regulatory Bodies for the Target.

2. In the absence of definitive Regulatory Body requirements, systems and equipment that have single points of failure that degrade the performance of organic mission and safety critical systems

- 15 -shall be provided with compensating features and increased design margins. A single failure point is defined as the failure of an item, which would result in failure of the system and is not compensated for by redundancy or alternative operational procedure. The single failure definition does not apply to the failure of fixed piping, manually operated valves, and duplex strainers.

3. Material, furnishings, and equipment shall be selected by the following criteria:

A. Space functionality B. Ability to withstand an industrial and marine environment C. Safety D. Durability/reliability E. Maintainability.

4. Equipment selection should consider existing availability within the Navy and Department of Defense logistics support infrastructure.

5. At Target delivery, all machinery and Information Technology hardware shall be delivered with at least five years remaining prior to the Original Equipment Manufacturer’s end of support date.

6. All application software, including embedded software within systems, and operating systems shall be supportable and provided with the means to be supportable. At Target delivery, all application software and firmware programs, and operating systems shall be delivered with at least three years remaining prior to the software developer's or Original Equipment Manufacturer's end of support date.

7. The Target structure, including interior non-structural bulkheads, shall have a design service life of 10 years. The approach for meeting this design objective shall be a combination of appropriate sizing of scantlings to include a corrosion allowance and effective corrosion prevention systems.

Fabrication techniques shall follow the best commercial marine practices.

8. Physical, logical and electrical interfaces for the Target shall be designed to non-proprietary open standards and protocols to enable interoperability, adaptability, upgradeability, and configurability.

9. Target equipment shall be located and oriented with all due consideration of access, operation and maintenance. Equipment, outfitting, furnishings, and support systems as well as interior non-structural components such as bulkheads, partitions, deck surfaces, and so forth, shall be selected or designed to minimize upkeep and maintenance.

10. Target equipment for each system shall be localized to minimize the amount of piping and provide for simplified operation.

(078) MATERIALS

078a. MATERIALS

1. Rubber gasket material for doors and hatches shall be of 45 durometer hardness.

Joiner hardware shall be brass, bronze, or corrosion-resistant steel and of rugged design.

2. Piping system materials are specified in Section 505.

3. Materials shall comply with the following standards:

Bronze, manganese

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Sand cast ASTM B584, alloy C86500

Forging rods, bars, and shapes ASTM B138, alloy C67500

Brass, naval

Rods, bars, and shapes ASTM B21, alloy C46400

Copper-nickel alloy

Rod, sheet and flat products ASTM B122, alloy C70600, C71500

Nickel-copper alloy

Rod, sheet, sections ASTM B164 or ASTM B127, class A or B

Corrosion-resistant steel (CRES)

Wrought AISI 310, 316 or 316L

Note: AISI 302 and 304 may be used for non-welded applications.

Cast - For applications exposed to seawater (underwater)

ASTM A744 grade CF-8, CF-8M, CF-3, or

CF-3M

Cast - For above-water applications

ASTM A743 grade CF-8, CF-BM, CF-3, or

CF-3M

Plate and sheet ASTM A240; AISI 304L or 316 for welded applications; AISI 302, 304 or 316 may be used for non-welded applications; AISI 316 or

316L for applications subject to abrasion.

Steel

Plate (1/8 inch or greater) ABS grade Ordinary Strength (OS) Hull

Structural Steel, grade A or B

Sheet ASTM A570/A570M grade 30, 36 or 40

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Castings ASTM A27 grade 60-30

Forgings ASTM A668 class C

Bars and shapes ASTM A131

Steel pipe (stanchion) ASTM A53 or ASTM A106/A106M-19A grade B

Aluminum

Tube ASTM B210/B210-19A, 5086-H111, 5086-H32

Plate ASTM B209/B209M-21A, 5086-H116 or 5086- H117

4. Galvanizing - All galvanized materials shall be hot-dipped in accordance with the applicable ASTM requirements.

5. Alternative Materials - The use of materials differing from those specified for a given application will be considered when the Contractor shows the necessity for such substitution and when the material proposed is a satisfactory alternate.

6. The attachment of brass, bronze or copper base alloy fittings to aluminum alloy fittings shall be avoided. Where such attachments are necessary, CRES bolts shall be used.

7. Brass, bronze or copper base alloy fastenings shall not be used with aluminum alloys.

078b. MATERIAL PROHIBITION

1. The prohibited chemicals in the Naval Sea Systems Command (NAVSEA) List of Targeted Chemicals (N-LTC) shall not be used in the construction and operation of the ship unless excepted as noted in the N-LTC or otherwise approved. Use of the restricted chemicals in the N-LTC shall be minimized in the construction and operation of the ship.

(079) STABILITY

079a. GENERAL

1. The Target shall meet the intact and damage stability requirements of ABS Rules 3-3-1 for Subdivision and Stability.

A. The Target shall meet the intact stability of the 2008 IMO Code and ABS Rules for Building and Classing Steel Vessel Under 90 Meters in length.

B. The Target shall meet the damage stability requirements for a special purpose ship in compliance with applicable SOLAS regulations for the Target’s service.

2. All stability analysis and calculations shall cover the full range of loading conditions up to and including the load line draft.

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3. The vessel shall meet a two compartment standard of subdivision. Damage shall be assumed to occur at a watertight boundary and that the two adjacent spaces are flooded. In locations where a longitudinal watertight boundary exists, the damage shall be assumed to flood all compartments touching any one intersection between the longitudinal watertight boundary and a transverse watertight boundary. The minimum longitudinal damage is three meters. The vertical extent of damage is unlimited.

4. Intact and Damage stability shall be assessed in each condition of loading and operation.

5. The stability analysis shall be performed with the craft free to trim. The vessel shall be considered for ocean service and service on exposed waters when evaluating weather criteria.

(085) DRAWINGS

085a. DEFINITIONS

1. Final Target construction drawings, also referred to as "as-built" or "as-constructed" drawings, shall be revised to illustrate the final validated craft and system arrangement, fabrication, and installation of equipment as defined in the Specification at or after delivery.

2. Equipment drawings are drawings prepared by manufacturers of Contractor furnished equipment that are identified by a manufacturer drawing number. They include, but are not limited to, certification data sheets, drawings lists, outline drawings, assembly drawings, subassembly drawings and parts lists.

3. Reproducible drawings are drawings from which clean and legible prints can be made.

(096) WEIGHT CONTROL

096a. GENERAL

1. A service life design margin shall be applied to the Target design. The vessel shall meet all performance requirements stated in Section 070 at the Full Load, End of Service Life condition using the following:

A. Weight Service Life Allowance: 5.0% of Full Load displacement at delivery.

B. KG Service Life Allowance: 0.150 meters above Full Load KG at delivery.

2. List and Trim - List shall not exceed 1/2° to port or to starboard. This List requirement shall apply to all loading conditions including Light Ship and Full Load conditions. Trim in the Full Load condition, light ballast condition and all other operation conditions shall not exceed 1.0% of the length between perpendiculars (LBP) by the stern. Ballasting of fuel tanks is not acceptable.

3. In determining Contractor responsibility, the values of displacement, KG, list and trim of the Target at Full Load shall be based on the inclining experiment, supplemented by calculated values to bring the Target to its calculated Full Load condition.

4. Permanent ballast shall be installed per Section 636.

5. All liquid and semi-solid ballast shall be accounted for in the Full Load condition. However, the weight service life allowance shall not be applied to these Ship Work Breakdown System (SWBS) items during End of Service Life weight calculation.

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096b. LOADING CONDITIONS

1. The Target will utilize a number of empty 10-, 20-, and 40-foot equivalent ISO containers for arrangement on the weather deck. The illustrations shown below in Figure 096-1 depict the ISO containers used in various, typical arrangements.

Figure 096-1: ISO Container Arrangement Schematics.

2. The Full Load condition shall incorporate the following arrangement of ISO containers as shown in Figure 096-2. For weight and stability calculations, a Twenty-foot Equivalent Unit (TEU) shall have an assumed weight of 2,200 kg. A Ten-foot equivalent Unit shall have an assumed weight of 1,300 kg.

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Figure 096-2: Full Load Condition ISO Container Schematic.

3. The Target shall be capable of being ballasted to zero trim in any loading condition up to Full Load, End of Service Life and shall be capable of being ballasted to at least 2' - 0" trim by the stern for towing in any loading condition up to Full Load, End of Service Life.

(100) REQUIREMENTS FOR HULL STRUCTURE

100a. GENERAL

1. Craft structure shall be designed to withstand inertial forces due to craft motions given in Section 070 in a seaway.

100b. DESIGN STRESSES

1. Under the design loads, stresses in structural members not covered by ABS Marine Vessel Rules, excluding bending stresses in individual plating panels, shall not exceed the following allowable limits:

A. Tensile and Bending Stresses - Where there is no danger of failure from instability, allowable limits for the algebraic sums of axial and bending stresses shall be 28,000 psi.

B. Shear Stresses - Where there is no danger of failure from instability, allowable limits for shear stresses are 60 percent of the allowable tensile stresses.

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C. Column Stresses - Allowable axial compression on stanchions shall be in accordance with the ABS Marine Vessel Rules. Allowable axial stresses in structural members, other than plate panels, shall be 67 percent of the column strength for members with a slenderness ratio greater than 60, and 80 percent of the column strength for members with a slenderness ratio equal to or less than 60 percent.

D. Combined Bending and Column Stresses - The sum of the ratios of calculated stress to allowable stress shall not exceed unity.

2. Plating Panels Under Edge Loadings - Compressive stresses shall not exceed 80 percent of the ultimate strength of the plating.

100c. STRUCTURAL ARRANGEMENT AND DETAILS

1. Structure contributing to the longitudinal strength of the craft shall be continuous through transverse structure. This structure includes longitudinal framing, deck and hull plating. Beam ends shall land on other structural framing members. Where beam ends must land on unsupported plating, they shall be modified to prevent puncturing of the plating by end rotation by installing headers, landing the beam end on a pad, or terminating the stiffener end 1 inch from the plating and sniping the web and flange 60 degrees.

2. Where a structural bulkhead or superstructure side crosses a structural bulkhead, web frame or deep girder below that deck, forming a knife edge support, chocks shall be fitted to the under member in the plane of the crossing bulkhead to distribute the load. Where the bulkhead above or below has a stiffener in the plane of the crossing member, chocks need not be fitted, provided the stiffener is not sniped. Strength members which are subjected to high tensile stresses shall be designed so that dependence is not placed on the strength of the metal normal to its plane of rolling. Where this is impracticable, through connections or other means shall be provided to minimize the possibility of failure due to plate laminations.

3. Recesses which would not be readily accessible for cleaning shall be avoided.

4. Openings - Openings in the principal longitudinal strength members of the hull and superstructure, such as Main Deck and shell, shall be separated and not aligned in a transverse plane. Where openings are close together, they shall be combined to form a single opening.

5. Openings in structure shall be circular. Where a circular opening is not practicable, corners of openings shall have a radius of at least one-eighth of the minor dimension of the opening.

6. If the size or location of an opening impairs the strength of a structural member, it shall be reinforced.

7. Drain Holes - In non-tight structure, drain holes shall be cut and water courses provided to prevent the accumulation and retention of liquids and to permit their free flow to drains, scuppers, sumps and suction pipes. In non-tight portions of bottom longitudinals and the vertical keel, drain holes shall be located to ensure drainage of each bay formed by longitudinals and transverse frames.

100d. WORKMANSHIP

1. Fabrication - Discontinuities, undercutting, notches, nicks or other mechanical damage which might initiate or propagate cracks or points of weakness shall be avoided. Where members are notched out for frames, beams or other shapes, corner radii shall be provided.

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2. Discontinuous members on opposite sides of a through member shall line up back-to-back with a limit of error in offset not exceeding one-half the thickness of the through member.

3. Where the discontinuous member is a structural shape, both webs and flanges shall be aligned within this limit.

4. Flanges of shell, deck and watertight bulkhead stiffeners shall not be drilled or punched for attachments of gratings, platforms, foundations, fittings and hangers where they contribute to the structural strength of the hull girder or where they contribute to the strength of structure affording watertight integrity to the hull.

5. Sharp or ragged edges of exposed structure shall be removed, where likely to injure personnel or equipment. Corners in passageways shall be rounded to present a finished appearance.

6. Tightness - Wherever both ends of wiring trunks or pipe tunnels terminate in transverse watertight bulkheads or decks, the ends of such trunks or tunnels shall be sealed watertight at each such bulkhead or deck. Stuffing tubes, flanged joints or stuffing boxes shall be provided, as necessary, to safeguard the tightness of the deck or bulkhead.

(111) PLATING

111a. GENERAL

1. Plating layout shall be staggered so that the corners of four plates never intersect at a common point.

2. Interference of butts and seams with longitudinals, bulkheads, decks, and structural members and fastenings that attach to shell plating shall be avoided wherever practicable.

(115) STRUCTURAL STANCHIONS

115a. GENERAL

1. Stanchions, in combination with girders and vertical bulkheads, shall support the decks when these members are subjected to the various loadings for which they are designed.

2. Stanchions shall be located vertically one above another, or over bulkheads, and shall form continuous columns of support. In locating stanchions and in designing brackets, eccentric loading shall be minimized.

3. Stanchions shall not be permanently welded in place until surrounding welded structure has been completed.

115b. DESIGN

1. In determining the boundaries of deck loads acting on a stanchion, structural bulkheads located either above or below deck shall be considered effective deck supports.

115c. STRUCTURAL DETAILS

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1. The connections at the head and heels of stanchions shall be of sufficient size to develop the full strength of the stanchions in compression. Tubular stanchions shall be welded around the T-joint at heads and heels with a single bevel weld, fillet reinforced.

2. Chocks shall be fitted to structural members such as longitudinals, beams, girders and bulkheads at the heads and under the heels of stanchions. The chocks shall be at right angles to these members, and their thickness shall be that of the web of these members. Except for bulkheads, the chocks shall be of the same depth as the webs of the members.

3. Where stanchions support or are supported by a system of structural members intersecting at the stanchion, chocks shall be fitted between the flanges of the members and in the plane of the web of the smaller member.

4. Cap and sole plates shall be fitted at the head and heel of stanchions where the beam flange or deck plating at which the stanchion ends is of lesser thickness than the stanchion wall thickness or is of insufficient width.

(116) HULL FRAMING

116a. GENERAL

1. Stiffening, framing and increased scantlings shall be provided for floors, transverse frames, longitudinals, stringers, and center keel in way of foundations and stanchions to support local loads.

2. Non-tight transverse frames, floors, web frames and longitudinals shall be scalloped or sniped in way of through welds in adjoining structure.

116b. TRANSVERSE FRAMING

1. Framing shall be fitted as required to resist wave impact, panting and vibration. Clearance shall be provided between transverse frames and butts of plating.

116c. LONGITUDINALS AND STRINGERS

1. The longitudinals located on the bottom, side shell, longitudinal bulkheads and decks shall be continuous through transverse structure and shall be supported by transverse frames and bulkheads.

2. Where longitudinals penetrate watertight bulkheads, the plating shall be restored to watertight condition with welded steel collar plates. No lightening holes shall be cut in the center keel.

Bottom side girders shall not have lightening holes in the frame space adjacent to transverse floors. Transverse floors shall not have lightening holes in the longitudinal space adjacent to the center keel or side girders.

3. Longitudinals and stringers shall be laid off in conjunction with shell plating, framing, floors and bulkheads so that they may best contribute to the structural strength of the Target and support the shell. They shall be as nearly normal to shell plating as practicable. Clearance shall be provided between longitudinals and stringers, and the butts of plating.

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4. Changes in direction and scantlings shall be gradual. Changes in direction shall be made at a bulkhead or web frame. The taper at changes in depth of longitudinals, stringers and their end brackets shall not exceed 20 degrees.

(120) STRUCTURAL BULKHEADS

120a. GENERAL

1. Structural bulkheads shall be provided in the hull for purposes of watertight subdivision, structural integrity and fire protection. Bulkhead plating shall be butt welded.

2. Stiffeners shall be so arranged and designed that when acting with an effective breadth of plating, they will be adequate to support the part of the vertical load which cannot be considered as being distributed to the bulkhead boundaries through shear in the bulkhead plating.

3. Stiffeners shall be fitted on only one side of a bulkhead and shall be continuous for the full depth or width of the bulkhead. Cross-stiffening normal to the main stiffening shall be intercostal.

4. Doors, arches and other openings shall be located so that as few stiffeners as practicable are cut, and so that the efficiency of the bulkhead as a frame is not impaired.

5. Attachments to bulkheads for the purpose of supporting local weights shall not impair the strength or tightness of the bulkhead. Insert and margin plates and special framing and stiffening shall be installed to distribute local stress. The attachments shall be made to the special framing and not directly to the bulkhead plating.

6. Miscellaneous bulkheads and portions of bulkheads not definitely specified shall be of the same general character and scantlings as the bulkheads in the immediate vicinity for similar purposes.

120b. HULL STRUCTURAL BULKHEADS

1. Transverse watertight (main subdivision) bulkheads shall be fitted in the hull to divide the hull into watertight compartments.

2. Structural bulkheads in the hull shall be designed to support longitudinal and transverse beams and girders, allowing these members to develop full strength.

3. A watertight access door shall be located within the watertight bulkhead separating the main engine and steering gear rooms.

(130) DECKS AND PLATFORMS

130a. GENERAL

1. The top surface of deck plating in way of walking, container and stern areas shall be flush. Where a flush top is impractical, the top corner of the projecting plate edge shall be ground or beveled with a smooth finish.

2. The Engine Room access opening shall have a 4-inch high coaming, except for the side which forms the top of a stairway. It shall be of welded construction and shall extend through the deck. The upper and lower edges of the coaming shall be rounded.

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(150) DECKHOUSE

150a. GENERAL

1. Deck framing shall not be considered as providing vertical support to the deckhouse sides or transverse bulkheads which extend over more than one supporting bulkhead. These supporting bulkheads shall be assumed to carry the Full Load.

2. Where the ends of the vertical deckhouse stiffeners do not land on deck framing below, the ends shall be sniped.

3. The deckhouse will contain the following:

A. Access to the Engine Room through a watertight door.

B. An enclosed intake trunk that will provide for the installation and maintenance of all ventilation ducting. Vents through bulkheads exposed to the weather shall have louvers that can be closed by means of dogged covers.

C. Control room…