DRAFT_Att 1_2021-002 UB_BP Specification 10NOV.pdf

Attachment 1 – NAVFAC 25UB & 30BP i

Attachment 1

Naval Facilities (NAVFAC) Oil Spill Response (OSR)

25-foot Utility Boat (25UB) and

30-foot Boom Platform Boat (30BP)

SPECIFICATION

REV. –

10 November 2022 ii

REVISION HISTORY

Date Summary Of Change Hull Applicability

Version

11/10/2022 Initial Issue - -iii

TABLE OF CONTENTS

SECTION 0: GENERAL GUIDANCE AND ADMINISTRATION

040 INTRODUCTION AND GENERAL DESCRIPTION

040-1 BACKGROUND

040-2 APPLICABLE CONFIGURATIONS VARIANTS

042 GENERAL ADMINISTRATIVE REQUIREMENTS

042-1 GENERAL REQUIREMENTS

042-2 DEFINITIONS

042-3 REFERENCED DOCUMENTS

042-4 ALTERNATE ITEMS

042-5 ORDER OF PRECEDENCE

042-6 STATEMENT OF WORK (SOW)

042-7 ORDER OF PRECEDENCE

042-8 INSPECTIONS

050 BOAT PERFORMANCE

050-1 BOAT PERFORMANCE

070 GENERAL REQUIREMENTS OF DESIGN AND CONSTRUCTION

070-1A BOAT CHARACTERISTICS (25UB)

070-1B BOAT CHARACTERISTICS (30BP)

070-2 ENVIRONMENTAL CONDITIONS

070-3A LOAD CONDITIONS (25UB)

070-3B LOAD CONDITIONS (30BP)

070-4 ABYC STANDARDS

070-5 ALTERATIONS

070-6 SEAKEEPING, DYNAMIC STABILITY, AND MANEUVERABILITY

070-7 INSTALLATION OF EQUIPMENT, MACHINERY, AND MATERIALS

070-8 WORKMANSHIP

070-9 CONFIGURATION MANAGEMENT

071 ACCESS

071-1 ACCESSIBILITY

071-2 BILGE ACCESS

073 NOISE LEVELS

073-1 NOISE LEVELS

073-2 MECHANICAL VIBRATION

074 WELDING AND ALLIED PROCESSES

074-1 GENERAL

074-2 VISUAL INSPECTIONS

iv

074-3 DYE PENETRANT TESTING (PT)

075 FASTENERS

075-1 STAINLESS STEEL FASTENERS

078 MATERIALS

078-1 GENERAL

078-2 METAL MATERIAL

078-3 FABRIC MATERIAL

078-4 BEDDING COMPOUND

078-5 NON-BIODEGRADABLE MATERIALS

078-6 FABRIC MATERIAL

078-7 FIRE RETARDANT INTERIOR MATERIALS

078-8 CORROSION CONTROL

078-9 DISSIMILAR METALS

079 STABILITY

079-1A INTACT STABILITY (25UB)

079-1B INTACT STABILITY (30BP)

079-2 FLOTATION

079-3 FLOTATION FOAM

079-4 (OPTIONAL) FLOTATION TEST

084 TRANSPORTATION AND HANDLING

084-1 APPLICABLE TRANSPORT MODES

084-2A OTR TRANSPORT (25UB)

084-2B OTR TRANSPORT (30BP)

084-3 MARITIME TRANSPORT

084-4 BOAT AND TRAILER TIEDOWN FITTINGS

084-5 TIEDOWN STRAPS

084-6 ROAD TRAILER

085 TDP

085-1 TECHNICAL DESIGN ANALYSES

085-2 AS-BUILT DRAWINGS

085-3 BOAT TECHNICAL MANUAL

085-4 COTS TECHNICAL MANUALS

085-6 OEM WARRANTIES BOOKLET

085-7 TESTS AND TRIALS REPORTS

085-8 TRAILER TITLE

085-9 ECSC DOCUMENTATION

085-10 MDI

v

092 TESTING

092-1 GENERAL

092-2 TEST CERTIFICATIONS

094 TRIALS

094-1 BT

094-2 PDIT

094-3 STEERING AND MANEUVERING TRIALS

097 INCLINING EXPERIMENT (OPTIONAL)

099 PHOTOGRAPHS

099-1 PHOTOGRAPHS

SECTION 1: HULL STRUCTURE

100 GENERAL REQUIREMENTS FOR HULL STRUCTURE

100-1 GENERAL STRUCTURAL REQUIREMENTS

100-2 LIMBER HOLES

110 SHELL AND SUPPORTING STRUCTURE

110-1 BEACHING PLATE

130 HULL DECKS

130-1 QUICK DRAINING DECKS

150 DECK HOUSE STRUCTURES

150-1A HULL STYLE: WHEELHOUSE (25UB)

150-1B HULL STYLE: WHEELHOUSE (30BP)

167 HULL STRUCTURAL CLOSURES

167-1 DOORS AND HATCHES

167-2 EQUIPMENT REMOVAL

169 SPECIAL PURPOSE CLOSURES AND STRUCTURES

169-1 OUTBOARD BRACKET

169-2 ENGINE GUARD

169-3 FLAT BOW (25UB)

169-4 BOW DOOR (30BP)

SECTION 2: PROPULSION

236 OUTBOARD ENGINES

236-1 OUTBOARD ENGINES: GENERAL

236-2A OUTBOARD ENGINES (25UB)

236-2B OUTBOARD ENGINES (30BP)

252 PROPULSION CONTROL SYSTEM

252-1 PROPULSION INSTRUMENT MARINE PACKAGE (INTEGRATED)

SECTION 3: ELECTRIC PLANT

vi

300 GENERAL REQUIREMENTS FOR ELECTRIC PLANT

300-1 SUITABLE FOR MARINE ENVIRONMENT

300-2 PANEL COVERS

300-3 BONDING SYSTEM

300-4 SWITCHES

300-5 ENCLOSURES

300-6 TERMINAL STRIPS

303 PROTECTIVE DEVICES

303-1 DC OVERCURRENT PROTECTION

304 ELECTRICAL CABLE, WIRING, AND CONNECTIONS

304-1 WATERTIGHT CONNECTIONS

304-2 CABLE SUPPORTS

304-3 MARINE MULTI-CONDUCTOR CABLE

304-4 ELECTRICAL CONNECTIONS

304-5 WEATHERPROOFED CONNECTORS

304-6 WATERTIGHT CABLE PENETRATIONS

304-7 IGNITION PROTECTION

313 BATTERIES

313-1 BATTERIES (OUTBOARD 12 VDC)

313-2 BATTERY CHARGING (12 VDC ALTERNATOR)

313-3 BATTERY VOLTMETER

320 POWER DISTRIBUTION SYSTEMS

320-1 DC POWER DISTRIBUTION SYSTEM

320-2 CONVENIENCE OUTLETS (12 VDC)

320-3 WATERTIGHT OUTLETS (12 VDC)

324 ELECTRICAL PANELS

324-1 ELECTRICAL CIRCUIT BREAKER PANELS

330 LIGHTING

330-1 ELECTRONIC DIMMER

330-2 INTERIOR LED LIGHTING

330-3 DECK WORK LIGHTS

330-4 ELECTROMAGNETIC COMPATIBILITY

SECTION 4: COMMAND AND CONTROL

400 GENERAL REQUIREMENTS FOR COMMAND AND CONTROL

400-1 FLUSH MOUNT EQUIPMENT SERVICE CLEARANCES

405 ANTENNA REQUIREMENTS

405-1 GENERAL REQUIREMENTS

vii

421 NON-ELECTRICAL NAVIGATION AIDS

421-1 MAGNETIC COMPASS

422 ELECTRICAL NAVIGATION AIDS

422-1 NAVIGATION LIGHTS

422-2 GPS/ CHARTPLOTTER/DEPTH SOUNDER

422-3 SPOTLIGHT, HANDHELD

422-4 SPACE/WEIGHT/POWER/FOUNDATION RESERVATIONS FOR INTEGRATED

ELECTRONIC NAVIGATION PACKAGE

436 ALARM, SAFETY, AND WARNING SYSTEMS

436-1 BILGE FLOODING ALARM SYSTEMS

441 RADIO SYSTEMS

441-1 VHF MARINE BAND RADIO

443 VISUAL AND AUDIBLE COMMUNICATION SYSTEMS

443-1 NAVIGATION HORN

SECTION 5: AUXILIARY SYSTEMS

500 GENERAL REQUIREMENTS FOR AUXILIARY SYSTEMS

505 GENERAL REQUIREMENTS FOR FLUID SYSTEMS

505-1 FLUID SYSTEM CONNECTIONS

505-2 THROUGH-HULL FITTINGS AND VALVES

505-3 FLUID SYSTEMS

505-4 HOSE INSTALLATION (GENERAL)

512 MANNED COMPARTMENT VENTILATION SYSTEMS

512-1 WHEELHOUSE FAN

529 BILGE/DRAINAGE SYSTEM

529-1 PORTABLE MANUAL BILGE PUMP

529-2 ELECTRIC BILGE PUMP(S)

529-3 HULL DRAINS

541 FUEL SYSTEM

541-1 GASOLINE FUEL SYSTEM

541-2 PORTABLE FUEL STRIPPING PUMP

555 FIRE FIGHTING

555-1A PORTABLE FIRE EXTINGUISHERS (25UB)

555-1B PORTABLE FIRE EXTINGUISHERS (30BP)

561 STEERING CONTROL SYSTEMS

561-1 HYDRAULIC STEERING

581 ANCHOR HANDLING

581-1 ANCHOR FITTINGS

viii

581-2A ANCHOR (25UB)

581-2B ANCHOR (30BP)

582 MOORING AND TOWING SYSTEMS

582-1 TOWING FITTING: GENERAL

582-2 AFT TOWING FITTING

582-3 AFT TOW POST SAFETY SCREEN

582-4 FORWARD TOWING FITTING

582-5 BOW EYE

582-6 CLEATS

582-7 TOW PENDANT (30BP)

592 DIVER SUPPORT SYSTEMS

592-1 DIVER DOOR (25UB)

SECTION 6: OUTFIT AND FURNISHINGS

600 OUTFIT

600-1 BOAT HOOK

600-2 RING BUOY

600-3 FLAG(S) AND MAST(S)

600-4 MOORING LINES

600-5 FIRST AID KIT

600-6 PADDLES

600-7A PERSONAL FLOTATION DEVICES (25UB)

600-7B PERSONAL FLOTATION DEVICES (30BP)

602 LABELING

602-1 HULL REGISTRY NUMBER

602-2 LABEL PLATES (GENERAL)

602-3 PIPING SYSTEM LABEL PLATES

602-4 VALVE LABEL PLATES

602-5 INSTRUCTION LABEL PLATES

602-6 HOISTING LABEL PLATES

602-7 BOAT INFORMATION LABEL PLATE

602-8 BOAT ALTERATION LABEL PLATE

602-9 SHIPPING DATA LABEL PLATE

602-10 IN-SERVICE LABEL PLATE

602-11 SYSTEMS LABEL PLATES

602-12 STOWAGE LABEL PLATES

602-13 UNIQUE ITEM IDENTIFICATION (UID)

602-14 POTENTIAL NOISE HAZARD SIGNS

ix

602-15 OPERATION LABEL PLATE (25UB)

611 HULL FITTINGS

611-1 HOISTING FITTINGS

611-2 HOISTING SLINGS

611-3 HOISTING HARDWARE

611-4A DECK CARGO TIEDOWNS (25UB)

611-4B DECK CARGO TIEDOWNS (30BP)

611-5 HEAVY DUTY FENDERING

611-6 RUB STRAKES

612 RAILS, STANCHIONS, AND LIFELINES

612-1 GRAB RAILS

612-2 HANDRAILS

625 WINDOWS

625-1 WINDSHIELD WIPER AND WASHER SYSTEM

631 PAINTING

631-1 EXTERIOR TOPSIDE PAINT

631-2 EXTERIOR BOTTOM PAINT

631-3 EXTERIOR NON-SKID

633 CATHODIC PROTECTION

633-1 ANODES

633-2 CATHODIC PROTECTION MONITOR

634 DECK COVERING

634-1 DECK MATTING

662 WORKING SPACES AND SEATING

662-1 CONSOLE ERGONOMICS

662-2 SEATING – BOLSTER

670 STOWAGE SPACES

670-1 STOWAGE

671 LOCKER AND SPECIAL STOWAGE

671-1 DECK UTILITY BOX (25UB)

SECTION 0: GENERAL GUIDANCE AND ADMINISTRATION

040 INTRODUCTION AND GENERAL DESCRIPTION

040-1 Background

The Naval Facilities Command (NAVFAC) Oil Spill Response (OSR) Program is responsible for providing US Navy facilities with oil spill response equipment, including oil spill response boats.

OSR boats are centrally procured via the US Navy Boat and Craft Program Office, PEO SHIPS

(PMS 300G).

Typical OSR mission requires 25-foot Utility Boat (25UB) and 30-foot Boom Platform (30BP) to sprint to the oil spill location ahead of the 30-foot Oil Pollution (30OP) skimmer. Primary mission of the 30BP is to transport boom sections to the oil spill location. Primary mission of the 25UB is to payout/deploy the 24” response boom from the 30BP and to tend the boom while the 30OP skimmer recovers the oil. Typical mission duration is 3-8 hours, with operations during daylight hours, typically ending at dusk.

040-2 Applicable Configurations Variants

Unless the variant is identified, the Specification sections shall apply to all variants. Throughout the Specification the variants will be referred to as:

25UB

30BP

The below table summarizes the differences amongst the variants throughout this Specification.

Elsewhere commonality between the variants shall be maintained as much as practicable.

Section Description 25UB 30BP

070-1 Boat Characteristics As required As required

070-3 Load Conditions As required As required

079-1 Stability As required, includes diver door

As required, includes bow door

084-1 Road Transport Unrestricted Minimal restrictions

150-1 Hull Style / Open Back Wheelhouse

As required As required

169-3 Flat Bow As required No requirement

169-4 Bow Door No requirement As required

541-1 Fuel Tank (non-integral) 75 gal min requirement 100 gal min requirement

582-4 Tow Pendant No requirement As required

592-1 Diver Door As required No requirement

602-11 Wind Speed Operation Label Plate

As required No requirement

670-2 Deck Utility Box As required No requirement

042 GENERAL ADMINISTRATIVE REQUIREMENTS

042-1 General Requirements

The boat shall have the following characteristics:

Welded aluminum hull;

The 25UB hull length shall be nominally 25 ft from bow to transom (engines, outboard bracket, and engine guard excluded);

The 30BP hull length shall be nominally 30 ft from bow to transom (engines, outboard bracket, and engine guard excluded);

Aluminum, three-sided wheelhouse;

Twin outboard engines

Specifications identified in this section provide the minimum required general system characteristics and requirements for the selection, installation, onboard performance, onboard inspection of machinery, equipment and outfit, and pre-installation handling and inspections of materials for construction.

042-2 Definitions

Accessible: capable of being reached for inspection, removal, or maintenance without the removal of permanent boat structure.

Contractor: a firm holding a prime contract with the Government for design and construction of the boat.

Cruise Speed: Boat speed at most fuel efficient RPM.

Deep water: a water depth of 0.8 (LOA) or greater.

Government: the United States Government.

Government Representative: The Contract Administration Office or other designated representative specified in the contract. Where such terms as “as approved”, “for approval”, “as directed”, and “for review” are used without further qualification, the approval, direction, decision, or review of the Government Representative is intended.

Idle Speed: Idle speed shall be speed of the boat at the idle RPM of the engines.

Readily Accessible: capable of being reached quickly and safely for effective use under emergency conditions without the use of tools.

Significant Wave Height: the average wave height (measured from trough to crest) of the highest 1/3 of waves present.

Sprint Speed: Boat speed at maximum engine RPM.

042-3 Referenced Documents

The following standards and specifications are referenced in this Specification. Where reference is made to a voluntary compliance or best practice standard, the recommended standards and practices shall be considered mandatory under this Contract. Use the most recent edition unless otherwise noted.

33 Code of Federal Regulation (CFR), Navigation and Navigable Waters

40 CFR, Protection of Environment

46 CFR Part 111, Electric Systems

46 CFR Part 160, Lifesaving Equipment

46 CFR Part 164, Materials

46 CFR Part 180.70, Ring Life Buoys

49 CFR Part 393, Parts and Accessories Necessary for Safe Operation

49 CFR Part 571, Federal Motor Vehicle Safety Standards

American Boat and Yacht Council (ABYC), Standards and Technical Information Reports for Small Craft

American Society of Mechanical Engineers (ASME) Y14.100, Engineering Drawing Packages

ASTM A182, Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

ASTM A276, Standard Specification for Stainless Steel Bars and Shapes

ASTM A312, Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM A351, Standard Specification for Castings, Austenitic, for Pressure-Containing Parts

ASTM B61, Standard Specification for Steam or Valve Bronze Castings

ASTM B62, Standard Specification for Composition Bronze or Ounce Metal Castings

ASTM B584, Standard Specification for Copper Alloy Sand Castings for General Applications

ASTM B928, Standard Specification for High Magnesium Aluminum-Alloy Products for Marine Service and Similar Environments

ASTM F593, Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs

ASTM F594, Standard Specification for Stainless Steel Nuts

ASTM F1166, Standard Practice for Human Engineering Design for Marine Systems, Equipment, and Facilities

ASTM F1321-14, Standard Guide for Conducting a Stability Test

DOD HDBK 743A, Anthropometry of US Military Personnel

Institute of Electrical and Electronics Engineers (IEEE) 45, Recommended Practice for Electric Installations on Shipboard

IEEE 1580, Recommended Practice for Marine Cable for Use on Shipboard and Fixed or Floating Facilities

International Electrotechnical Commission (IEC) standard 60529 IP ratings

International Regulations for Preventing Collision at Sea, 1972 (72 COLREGS) which are contained in “USCG Navigation Rules and Regulations Handbook”, U.S. Coast Guard Navigation Standards Branch, U.S. Coast Guard Headquarters, Washington, DC

International Standards Organization (ISO) 2533:1975, Standard Atmosphere

ISO 11812, Small craft – watertight or quick-draining recesses and cockpits

ISO 12215, Small Craft – Hull Construction and Scantlings

ISO 12217-1 Small Craft – Stability and Buoyancy Assessment and Categorization – Part 1: Non-Sailing Boats of Hull Length Greater than or Equal to 6m

Military Class A-A-59125 / MIL-T-55164

MIL-DTL-24779, Anodes, Sacrificial, Aluminum Alloy MIL-PRF-24667C, Coating System, Non-Skid, for Roll, Spray, or Self-Adhering

Application

MIL-STD-209K, Interface Standard for Lifting and Tiedown Provisions

MIL-STD-1366E, Interface Standard for Transportability Criteria

MIL-STD-1474E, Design Criteria Noise Limits

MIL-STD-2003-1A (SH) Electrical Plant Installation Standard Methods for Surface Ships and Submarines

MIL-STD-2035A, Department Of Defense Test Method: Nondestructive Testing Acceptance Criteria, 15 May 1995

MIL-STD-3950 Switches, Toggles, Environmentally Sealed

MIL-T-55164 / A-A-59125, Terminal Boards, Molded, Barriers, Screw, and Stud Types

NAVSEA DWG 5109421

NAVSEA S9086-C6-STM-010, Naval Ships’ Technical Manual, Chapter 096, Weights and Stability

NAVSEA TO300-AU-SPN-010A, Fabrication, Welding and Inspection of Small Boats and Craft, Aluminum Hulls

NAVSEA T9074-AS-GIB-010/271, Requirements for Nondestructive Testing Methods, September 2014

NSWCCD-23-TM-2009/33 Rev B, Hoisting System Design and Certification Process Guidance

NSWCCD-23-TM-2009/58 Rev B, U.S. Navy Boat Electrical Practices

NSWCCD-23-TM-2009/61 Rev A, U.S. Navy Boat Example Data Package

NSWCCD-23-TM-2009/64 Rev C, Small Craft Transportability Design and Certification Process Guidance, NSWCCD-23-TM-2009/65 Rev C, Towing Fitting Design and Certification Process Guidance

NSWCCD-23-TM-2011/05 U.S. Navy Craft Mechanical Practices

NSWCCD-23-TM-2011/38 Rev A, Mooring Fitting Design and Verification Process Guidance

NSWCCD-23-TM-2011/39 Anchoring System Design and Verification Process Guidance

NSWCCD-80-TR-2014/038, Weight Management Process Guidance for Boats and Craft

NSWCCD-83-TM-2020/10, Essential Cybersecurity Components (ECSC) Data Collection and Documentation

RR-C-271D, Chains and Attachments, Carbon and Alloy Steel

SAE J1273, Recommended Practices for Hydraulic Hose Assemblies

SAE J1508, Hose Clamp

SAE J1527, Marine Fuel Hoses

SAE J1942, Hose and Hose Assemblies for Marine Applications

UL 1426, Standard for Electrical Cables for Boats

WSTDA T-1, Recommended Standard Specification for Synthetic Web Tie Downs

042-4 Alternate Items

Where boat components and equipment are specified by brand name or manufacturer and model number and followed by “or equal”, such identification is intended to be descriptive, not restrictive, and is intended to indicate the required characteristics of the product. The Contractor may propose the use of other products which are equal to the specified make and model products. The following general requirements shall form the basis for determining the equality of alternate products unless additional specific or alternate requirements are designated within the applicable sections of this Specification:

a. The major attributes of form, fit, function, interface, and material of an alternate item shall not degrade the performance of the system within which it is used nor the boat as a whole.

The alternate item shall require no more space or volume than the designated item for installation, operation, or maintenance. The alternate item shall weigh no more than the designated item. The connection fittings required to incorporate the alternate item into a system shall be identical to those necessary to incorporate the specified item. The principles of operation of the alternate item shall be the same as those of the designated item (i.e., hydraulic cylinders shall not be used in lieu of springs, etc.). Input power, capacity, and other operating requirements for the alternate item shall be no greater than those required by the designated item. Output power, capacity, and other performance parameters of the alternate item shall be no less than those required for the designated item and not so much greater than those of the designated item as to require an increased capacity of the system within which the item is installed.

b. The materials of construction of the alternate item shall be the same as those of the designated item unless the Contractor can demonstrate to the Government that the proposed alternate material will not adversely affect performance or service life of the item, the system within which it is installed, or the boat as a whole.

c. The reliability and maintainability of an alternate item shall be equal to or better than the specified item. The Contractor shall provide evidence of the equality of the reliability and maintainability of the alternate item to the specified item. This evidence may include such things as results of testing, service histories, documentation of successful use in similar applications, planned maintenance requirements, etc. Where the reliability and maintainability of the specified item has been established by testing, the government may require that the alternate item undergo similar testing to demonstrate its reliability and maintainability. Such testing, if required, shall be at the Contractor's expense.

d. An alternate item shall conform to the same industry or government specifications or standards as the specified item. Where a specified item has been approved or certified by a regulatory or testing agency, such as USCG or Underwriters' Laboratories, the alternate item shall also be approved or certified. The cost of demonstrating compliance with specifications or standards, or of obtaining approval or certification, shall be borne by the Contractor.

e. If the specified item is one with established logistic support, any alternative item shall have equivalent logistic support. If equivalent logistic support has not been established for the alternate item, the Contractor shall bear the expense of establishing equivalent support.

Logistic support shall include, as applicable: maintenance planning and analysis; training and training support, including training equipment, curricula, and instruction materials;

supply support; support equipment such as special tools and test equipment; technical documentation including technical manuals, Product Technical Description (PTD), Planned Maintenance System (PMS), Technical Repair Standards (TRS), and software documentation; computer resource support; facilities for maintenance and training; unique packaging, handling, storage, and transportation requirements; and human engineering considerations.

The Government will not accept alternative items for brand name or manufacturer and model specified in the following Sections:

236-2 Outboard Engines

313-1 Batteries

422-2 Integrated Electronic Navigation Package

441-1 VHF Marine Band Radio

529-2 Electric Bilge Pump

633-2 Cathodic Protection Monitor

Except as listed directly above, the Contractor may propose the use of other products which are equal to the specified make and model products. The following general requirements shall form the basis for determining the equality of alternate products unless additional specific or alternate requirements are designated within the applicable sections of this Specification:

The major attributes of form, fit, function, interface, and material of an alternate item shall not degrade the performance of the system within which it is used; nor the boat as a whole.

The alternate item shall require no more space or volume than the designated item for installation, operation, or maintenance. The alternate item shall weigh no more than the designated item. The connection fittings required to incorporate the alternate item into a system shall be identical to those necessary to incorporate the specified item. The principles of operation of the alternate item shall be the same as those of the designated item (i.e., hydraulic cylinders shall not be used in lieu of springs, etc.). Input power, capacity, and other operating requirements for the alternate item shall be no greater than those required by the designated item. Output power, capacity, and other performance parameters of the alternate item shall be no less than those required for the designated item and not so much greater than those of the designated item as to require an increased capacity of the system within which the item is installed.

The materials of construction of the alternate item shall be the same as those of the designated item unless the Contractor can demonstrate to the Government that the proposed alternate material will not adversely affect performance or service life of the item, the system within which it is installed, or the boat as a whole.

The reliability and maintainability of an alternate item shall be equal to or better than the specified item. The Contractor shall provide evidence of the equality of the reliability and maintainability of the alternate item to the specified item. This evidence may include such things as results of testing, service histories, documentation of successful use in similar applications, planned maintenance requirements, etc. Where the reliability and maintainability of the specified item has been established by testing, the Government may require that the alternate item undergo similar testing to demonstrate its reliability and maintainability. Such testing, if required, shall be at the Contractor's expense.

An alternate item shall conform to the same industry or Government specifications or standards as the specified item. Where a specified item has been approved or certified by a regulatory or testing agency, such as USCG or Underwriters' Laboratories, the alternate item shall also be approved or certified. The cost of demonstrating compliance with specifications or standards, or of obtaining approval or certification, shall be borne by the Contractor.

If the specified item is one with established Government logistic support, any alternative item shall have equivalent logistic support. If equivalent logistic support has not been established for the alternate item, the Contractor shall bear the expense of establishing equivalent support. Logistic support shall include, as applicable: maintenance planning and analysis; training and training support, including training equipment, curricula, and instruction materials; supply support; support equipment such as special tools and test equipment; technical documentation including technical manuals, Product Technical Description (PTD), Planned Maintenance System (PMS), Technical Repair Standards (TRS), and software documentation; computer resource support; facilities for maintenance and training; unique packaging, handling, storage, and transportation requirements; and human engineering considerations.

042-5 Order of Precedence

In case of inconsistency between the requirements of the Contract, this Specification, and the documents referenced in this Specification, the following order of precedence applies:

1. The Contract requirements,

2. This Specification requirements,

3. Other Government specifications and standards, industry standards, and similar referenced documents.

The following are not considered inconsistencies subject to an order of precedence determination:

a. Silence of one document with respect to details shown in another.

b. Broad boat requirements compared to detailed system or component requirements.

042-6 Statement of Work (SOW)

This Specification is written to be used in conjunction with the SOW. Additional requirements such as warranty, packaging, delivery, training, etc., are defined in the SOW.

042-7 Order of Precedence

In case of inconsistency between the requirements of the Contract, this Specification, and the documents referenced in this Specification, the following order of precedence applies:

1. The Contract requirements,

2. This Specification requirements,

3. Other Government specifications and standards, industry standards, and similar referenced documents.

The following are not considered inconsistencies subject to an order of precedence determination:

a. Silence of one document with respect to details shown in another.

b. Broad boat requirements compared to detailed system or component requirements.

042-8 Inspections

The Contractor shall allow designated Government Representatives to monitor all aspects of construction and in process testing of the boat for the purpose of ensuring compliance with the contract. During the life of the contract, the Government or its representatives shall have access to the boat for inspection during working hours or outside of normal working hours when 24-hour notice is provided, subject to contractually required security and access control provisions.

050 BOAT PERFORMANCE

050-1 Boat Performance

Boat performance requirements shall be met in calm, deep water, water, Full Load condition (Section 070), ISO Standard 2533:1975 “Standard Atmosphere” conditions.

Cruise Speed: 15 kts (minimum);

Sprint Speed: 25 kts (minimum);

070 GENERAL REQUIREMENTS OF DESIGN AND CONSTRUCTION

070-1a Boat Characteristics (25UB)

Offeror to provide all parameters below in Attachment 2.

Length Overall (LOA) including appendages: {{xx.xx}} ft

Hull Length: {{xx.xx}} ft

Beam Overall (BOA): {{xx.x}} ft

[Shall be less than or equal to 102 inches per Section 084]Chine Beam: {{xx.x}} ft

Height, Keel to Fixed Structure: {{xx.x}} ft

Height, Keel to Moveable Structure: {{xx.x}} ft

Height, Gunwale top to deck (min – max): {{xx.x – xx.x}} ft

Height, Gunwale top to waterline (min – max): {{xx.x – xx.x}} ft

Height on trailer when rigged for transport: {{xx.x}} ft

[Shall be less than 162 inches per Section 084]

Width on trailer when rigged for transport: {{xx.x}} ft

[Shall be less than or equal to 102 inches per Section 084]

Height from waterline to fixed structure: {{xx.x}} ft

Deadrise at midships: {{xx}} degrees

Deadrise at transom: {{xx}} degrees

Total Installed Fuel Capacity: {{xx}} gallons

Full Load: {{xx,xxx}} pounds (lbs) incl {{x}}% construction or build margin or both

Longitudinal Center of Gravity (LCG): {{xx.x}} ft forward of transom and keel intersect.

Static Draft: {{x.x}} inches

Cruise Speed: {{xx}} kts at Full Load in calm water

[Shall be at least 15 kts per Section 050]

Sprint Speed: {{xx}} kts at Full Load in calm water

[Shall be at least 25 kts per Section 050]

Projected Static Bollard Pull: {{xx,xxx}} pounds (lbs)

070-1b Boat Characteristics (30BP)

Offeror to provide all parameters below in Attachment 2.

Length Overall (LOA) including appendages: {{xx.xx}} ft

Hull Length: {{xx.xx}} ft

Beam Overall (BOA): {{xx.x}} ft

[Shall be less than or equal to 120 inches per Section 084]

Chine Beam: {{xx.x}} ft

Height, Keel to Fixed Structure: {{xx.x}} ft

Height, Keel to Moveable Structure: {{xx.x}} ft

Height, Gunwale top to deck (min – max): {{xx.x – xx.x}} ft

Height, Gunwale top to waterline (min – max): {{xx.x – xx.x}} ft

Height on trailer when rigged for transport: {{xx.x}} ft

[Shall be less than 162 inches per Section 084]

Width on trailer when rigged for transport: {{xx.x}} ft

[Shall be less than or equal to 120 inches per Section 084]

Forward Cargo Deck Space: {{xx.x}} ft

[Shall be measured from bow to wheelhouse (Length) by interior width]

Height from waterline to fixed structure: {{xx.x}} ft

Deadrise at midships: {{xx}} degrees

Deadrise at transom: {{xx}} degrees

Total Installed Fuel Capacity: {{xx}} gallons

Full Load: {{xx,xxx}} pounds (lbs) incl {{x}}% construction or build margin or both

Longitudinal Center of Gravity (LCG): {{xx.x}} ft forward of transom and keel intersect.

Static Draft: {{x.x}} inches at Full Load

Cruise Speed: {{xx}} kts at Full Load in calm water

[Shall be at least 15 kts per Section 050]

Sprint Speed: {{xx}} kts at Full Load in calm water

[Shall be at least 25 kts per Section 050]

Projected Static Bollard Pull: {{xx,xxx}} lbs

070-2 Environmental Conditions

The boat shall be capable of operating in ambient air temperatures between 0°F and 105°F and water temperatures between 28°F and 95°F.

Exterior materials shall be capable of withstanding ambient temperatures up to 150°F during full exposure to ultraviolet (UV) rays when stowed onboard ships or in other open stowage areas.

070-3a Load Conditions (25UB)

The following load conditions are defined for reference throughout this Specification. These definitions apply to the engineering design values for weight and moments of the boat in the described condition. The governing case of the variant in each applicable condition shall be used for design calculations. Weight Management Process Guidance for Boats and Craft, NSWCCD- 80-TR-2014/038 shall be used for guidance.

Light Ship: The boat, complete in all respects including outfit (Section 670), and ready for service with liquids in machinery at operating levels, but no personnel, fuel, or other variable loads.

Service Life Allowance (SLA): The SLA shall be 250 lbs.

Fuel Capacity (Gasoline): The fuel capacity for gasoline shall be 75 gallon minimum.

Minimum Payload Capacity: 1225 lbs

Crew: 5 personnel (185 lbs each) 925 lbs

Mission Gear 300 lbs

Minimum Payload 1225 lbs

Full Load Condition: Light Ship plus full fuel, Minimum Payload and SLA. Fuel weight.

Gasoline weight shall be calculated using a density of 6.1 lbs/gallon and 7.1 lbs/gallon for diesel.1/4

Minimum Operation (Min Op) Condition: Light Ship plus 1/4 fuel filled and two crew members.

Pre-Delivery Inspection and Trials (PDIT) Load Conditions:

Full Load Condition

Min Op Condition

Builder Trial (BT) Load Condition: Lightship plus full fuel and two personnel at 185 lbs each.

Boat Over-the-Road (OTR): Full Load Condition minus personnel.

Trailer Curb Weight: Trailer complete in all respects, including all tools and stowages on trailer, OTR tiedown straps, and miscellaneous material required for OTR transport (e.g.

boat covers, tiedown strap chafe protection, etc.).

Gross Vehicle Weight (GVW): Boat OTR plus Trailer Curb Weight.

Boat Design Hoisting: Light Ship plus SLA and full fuel

Trailer Design Hoisting: Trailer Curb Weight.

Combined (Boat and Trailer) Design Hoisting: Boat OTR (weight and moment), plus Trailer Design Hoisting (weight and moment), including any additional material needed for hoisting trailer beneath boat (e.g. additional tiedown straps, ballast (if necessary) and deck tiedowns, etc).

See Section 092 for testing requirements.

070-3b Load Conditions (30BP)

The following load conditions are defined for reference throughout this Specification. These definitions apply to the engineering design values for weight and moments of the boat in the described condition. The governing case of the variant in each applicable condition shall be used for design calculations. Weight Management Process Guidance for Boats and Craft, NSWCCD- 80-TR-2014/038 shall be used for guidance.

Light Ship: The boat, complete in all respects including outfit (Section 670), and ready for service with liquids in machinery at operating levels, but no personnel, fuel, or other variable loads.

Service Life Allowance (SLA): The SLA shall be 600 lbs.

Fuel Capacity (Gasoline): The fuel capacity for gasoline shall be 100 gallon minimum.

Minimum Payload Capacity: 3810 lbs

Crew: 6 personnel (185 lbs each) 1110 lbs

Boom Gear 2700 lbs

Minimum Payload 3810 lbs

Full Load Condition: Light Ship plus full fuel, Minimum Payload and SLA. Fuel weight.

Gasoline weight shall be calculated using a density of 6.1 lbs/gallon and 7.1 lbs/gallon for diesel.

Min Op Condition: Light Ship plus 1/4 fuel filled and three crew members.

PDIT Load Conditions:

Full Load Condition

Min Op Condition

BT Load Condition: Lightship plus full fuel and three personnel at185 lbs

Boat OTR: Full Load Condition minus personnel.

Trailer Curb Weight: Trailer complete in all respects, including all tools and stowages on trailer, OTR tiedown straps, and miscellaneous material required for OTR transport (e.g.

boat covers, tiedown strap chafe protection, etc.).

GVW: Boat OTR plus Trailer Curb Weight.

Boat Design Hoisting: Light Ship plus SLA and full fuel

Trailer Design Hoisting: Trailer Curb Weight.

Combined (Boat and Trailer) Design Hoisting: Boat OTR (weight and moment), plus Trailer Design Hoisting (weight and moment), including any additional material needed for hoisting trailer beneath boat (e.g. additional tiedown straps, ballast (if necessary) and deck tiedowns, etc).

See Section 092 for testing requirements.

070-4 ABYC Standards

Unless otherwise defined, the boat in all respects shall meet ABYC standards and recommended practices.

070-5 Alterations

Alterations to Original Equipment Manufacturers’ (OEM) products by the Contractor or distributor are highly discouraged. If alterations are necessary, documentation of the change shall be submitted for Government approval and shall be provided with the Technical Data Package (TDP).

070-6 Seakeeping, Dynamic Stability, and Maneuverability

The boat shall be safe and controllable at all speeds and under all loading conditions specified herein. Safe and controllable includes operation where boat orientation, motions, and accelerations do not pose a hazard to the crew or passengers that is not otherwise controllable by good seamanship and boat handling.

The boat shall be dynamically stable (oscillatory and nonoscillatory) at all operational loading conditions and speeds.

See Section 094 for trials requirements.

070-7 Installation of Equipment, Machinery, and Materials

All equipment and materials shall be new. Systems and components shall be selected for durability, longevity, safety, and ruggedness. Components shall be selected to maximize the use of commercial-off-the-shelf (COTS) products and commonality between hulls. Systems and components shall be installed with proper tools.

Unless otherwise approved by the Government, OEM recommendations for design and installation of their products into the boat shall be followed.

Connecting piping and wiring shall be run to minimize exposure to weather and bilge water.

Bulkhead and deck penetrations shall be as close as practicable to the equipment being served, preferably by direct connection through the adjacent deck or bulkhead.

All systems shall be free from leaks and safety hazards.

Equipment, components, wiring and piping shall be supported clear of the bilge to the maximum extent practicable.

All piping shall be cleaned to a degree of cleanliness that results in a surface that is reasonably free of contamination and any remaining residue on the surface does not interfere with system operation or damage system components.

Foundations and brackets for equipment shall be configured to provide access for cleaning, painting, preservation, and maintenance, to prevent accumulation of water, dirt, and foreign material.

Protection of personnel against operating hazards shall be provided. Shafting, couplings, gears, flexible shafts, and similar items shall have adequate guards installed for protection of personnel.

Such protective guards shall be removable without dismantling the machinery surrounded. Guards shall be as light as is consistent with required protection and strength. Guards shall be of sufficient strength to be used as steps or hand holds if located where such use may be anticipated.

Protective guards or insulation shall be installed to prevent contact with equipment where surface temperatures exceed 200°F. If surfaces exceed 140°F in the proximity of controls or manual actuators requiring manipulation by personnel during normal operation, protective guards or insulation shall be installed to prevent contact. For other surfaces exceeding 140°F, caution signs shall be installed.

Electrical equipment shall have non-conductive guards, screens, protective barriers or be insulated to protect personnel from contacting hazardous voltages or exposed terminals. Male plug and receptacle connectors shall be wired to the load side of the circuit to ensure that no voltage is present when not connected.

Equipment shall be protected against the hazard of personnel brushing against or being thrown against the equipment, particularly under heavy sea conditions, and inadvertently causing damage to exposed components or resulting in maladjustment of exposed functional controls such as push buttons, knobs, and switches. Protection shall be provided by equipment arrangement or design or by installation of enclosures, screens, or guardrails.

070-8 Workmanship

Plating shall be fair, closely fitted, and shall be free from buckling or uneven edges. Unless otherwise required herein, warpage and distortion shall not exceed limits stated in NAVSEA TO300-AU-SPN-010A. Fairing compounds shall not be used. Filler shall not be used to correct improper fit.

Heat forming and flame straightening shall not be used.

All sharp edges shall be dressed, ground, or radiused to avoid injury to personnel or damage to equipment, and to promote adhesion of coatings.

Pipe, cable and other penetrations through decks and through watertight bulkheads shall be watertight using a multi-diameter sealing system with removable layers, shall reduce the transmission of heat, and shall prevent the transfer of machinery vibration and noise through the hull structure. Piping, wiring leads, and vent ducts shall penetrate the bulkhead as close to the top of the bulkhead as practicable.

070-9 Configuration Management

The contractor shall maintain configuration management of each of the boat variants per the SOW Section C.

071 ACCESS

071-1 Accessibility

Electrical and mechanical components shall be accessible for maintenance and repair. All items requiring operation or maintenance (e.g. switches, valves, filters, strainers, seacocks, bilge pumps, etc.) shall be readily accessible while at the dock or underway. Stowage and securing of arches, antennas, masts or other items shall not prevent access to critical items such as battery switches, fuel shut off valves or other items that need to be checked, secured or operated for any of the required transport modes.

Permanent fittings and structure shall be kept clear of routes required for the removal of machinery and equipment. The space behind equipment may be inaccessible after installation; this factor shall be considered in providing proper preservation in way of such equipment and in selecting the location of pipes, ducts, wireways, and other permanent fittings behind such equipment. Nooks, cracks, and openings where water, dirt, dust, or foreign material can accumulate shall be avoided.

071-2 Bilge Access

All bilges and voids shall have removable plates or hatches for bilge access and inspection. The access and inspection openings shall be of sufficient size and locations to allow personnel access to the entire bilge and void areas. . Components in the bilge that need to be regularly accessed such as bilge pumps, strainers, valves, etc. shall be readily accessible by hatches . Access panels, plates or hatches shall not compromise the rating of the deck in which they are installed.

073 NOISE LEVELS

073-1 Noise Levels

If noise levels on exterior decks and in the wheelhouse are 85 dBA or greater under any of the test conditions specified in Section 092, appropriate labels shall be provided on the boat advising personnel of the potential noise hazard and under what conditions it occurs (Section 602).

073-2 Mechanical Vibration

The boat and all boat components shall be free from excessive vibration. Vibration is excessive when it interferes or threatens to interfere with the proper operation of any craft component.

Any unsatisfactory conditions resulting from the excitation of a resonant frequency by any equipment shall be corrected by local stiffening of structure, installation of suitable mountings, modification of components, or other effective means. Means to prevent excessive vibration during normal craft operating conditions shall be incorporated in the construction of the craft.

Means shall be provided to prevent rattling of removable plates, ladders, gratings, and similar items.

Mounts for removable components and accessories subject to vibration, including items moved for towing or transport, shall be fitted with resilient material as necessary to prevent rattling.

074 WELDING AND ALLIED PROCESSES

074-1 General

Welder and weld procedure qualification - weld procedures and welder qualification, including the associated record keeping requirements, shall be in accordance with the American Society of Mechanical Engineers (ASME), the American Welding Society (AWS), or NAVSEA TO300-AU-

SPN-010A.

The Contractor shall select one of these welding codes and adhere to all requirements of the selected document for each welding procedure specification. The Contractor may select different regulating codes for different weld procedures; however, all documentation, welding and welder requirements for each procedure (e.g. the Welding Procedure Specifications (WPSs), the Procedure Qualification Records (PQRs) and the welder qualification and testing of the welds) must follow the same code.

All documentation pertaining to welder and weld procedure qualification shall be maintained by the Contractor and shall be available for inspection by the Government.

If a subcontractor is used to fabricate custom-built welded assemblies the Contractor shall include these requirements in the subcontracting agreement and be responsible for assuring they are fulfilled.

Surfaces to be welded shall be cleaned to remove oil, grease, wax, oxide, scale, rust and other contaminants. In the case of aluminum, the oxide film shall be removed within 8 hours prior to welding. Fillet weld root openings shall not be greater than 1/16 inch.

074-2 Visual Inspections

All welds shall be visually inspected.

Welds shall be free of slag, weld splatter, cracks, sharp irregularities, craters and incomplete fusion.

The weld edge shall not form a reentrant angle with the base metal less than 90 degrees due to lack of fusion, undercut or excessive convexity.

Fillet welds dimensioned 3/8 inch or less shall not vary below the specified size by more than 1/16 inch for a total distance greater than 25 percent of the joint length. Fillet welds dimensioned 7/16 inch and larger shall not be less than the specified size. Fillet welds in excess of the required dimensions shall be avoided; however, oversized welds will be acceptable provided they meet the contour requirements and do not interfere with proper operation of the boat or its components. Fillet weld root openings shall not be greater than 1/16 inch.

Undercut shall not reduce the base metal thickness by more than 1/32 inch.

Welds shall not exhibit porosity or worm holes in excess of two indications 1/16 inch or larger in any 6 inch length of weld, exclusive of weld crater porosity.

Grinding to correct the weld profile shall not reduce the base metal thickness by more than 1/32 inch.

074-3 Dye Penetrant Testing (PT)

The cleats, towing fittings, and hoisting fittings foundations are critical welded assemblies. Critical welded assemblies shall be tested in accordance with NAVSEA TO300-AU-SPN-010A or similar standard with Government approval.

Towing fittings, bow eye, and hoisting fittings are critical welded assemblies. Critical welded assemblies shall be visually inspected and PT tested prior to painting the assembly per Section 092 as follows:

1. Visually inspect completed critical welded assembly per Section 074-2. If passing, proceed to step 2.

2. Before load testing, PT welds and 1/2 inch of base metal on either side of the weld for linear indications greater than 1/16 inch. If passing, proceed to step 3.

3. In a jig, pull test the assembly to the load required by Section 092.

4. After load testing, visually inspect assembly for signs of failure or permanent deformation AND PT welds and 1/2 inch of base metal on either side of the weld for linear indications greater than 1/16 inch. If passing, proceed to step 5.

5. Paint and install the assembly on the boat.

6. Perform load test on installed assembly as required by Section 092.

7. After load testing, visually inspect fittings and boat structure for signs of failure or permanent deformation.

8. Only if the assembly is unpainted and was installed on the boat directly after step 2, PT welds and 1/2 inch of base metal on either side of the weld for linear indications greater than 1/16 inch.

075 FASTENERS

075-1 Stainless Steel Fasteners

Fasteners throughout shall be type 316 Stainless Steel (UNS S31600). Fasteners used for structural applications shall be ASTM F593, Alloy Group 2 (type 316 stainless steel), Condition A or CW.

Where required for high strength application (e.g. engine shaft coupling), non-stainless, high strength fasteners with corrosion protection (e.g. paint, corrosion inhibitor, etc.) may be used with Government approval and documented in the TDP as a maintenance item.

Component mounting shall be through-bolted with ASTM F594 (type 316 stainless steel) nylon insert lock nuts and flat washers wherever practicable to suit fastener reinstallation during maintenance and repair. Threaded fasteners shall fully engage nuts with thread protrusion.

Excessive thread protrusion that poses personnel hazard shall be avoided.

Fasteners may be threaded into structural or non-structural materials only with Government approval.

Any pins used for folding, removable, or stowable features shall be secured with stainless steel and secured with stainless steel lanyards to prevent loss. Spring-loaded ball bearing type locking pins shall not be used.

Certain equipment installations may require other fasteners as specified by the OEM; these are acceptable provided they are installed according to OEM instruction.

078 MATERIALS

078-1 General

Materials referred to in this Specification without further identification shall comply with this section. Other materials, which are acceptable for use in specific applications, will be defined in the relevant Specification section or reference document that requires their use.

No plastic, polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), or high-density polyethylene (HDPE) shall be used without explicit Government approval except OEM components (e.g. electric bilge pump, NEMA Boxes).

All materials shall be marine grade and resistant to corrosion. All materials normally subjected to sunlight shall be highly resistant to degradation caused by ultraviolet radiation.

Joining surfaces between mechanically fastened metal components and between metals and laminates shall be protected by the use of bedding compound.

In order to exclude moisture from the joint, faying surfaces between mechanically fastened metal components, except machinery foundation shims, shall be protected by the use of bedding compound or gaskets, as applicable. Unless otherwise specified, gaskets for mechanically attached fitting shall be neoprene.

078-2 Metal Material

Aluminum (if used) shall be:

Sand cast: 3560 T6, Plate and sheet: 5086 H116, or 5086 H117 both ASTM B928, Extrusions: 5086 H111, Drawn tube: 5086 H32.

Non-structural components such as handrails, small component brackets, and wire ways may include extruded 6061 material. Non-structural 6061 components in welded applications shall be approved by the Government prior to fabrication.

Stainless Steel (if used) shall be:

Cast for general applications: J92800 or J92500; for non-welded applications UNS J92900 or J92600 may be substituted, Cast for underwater applications: J92800; for non-welded applications UNS J92900 may be substituted, Plate, sheet, bars, shapes, tubing, pipe: S31603; for non-welded applications S31600 may be substituted.

Piping Systems, where referred to in this Specification without further identifications, shall be as specified in this section:

Valves, strainers, and fittings:

o Bronze: UNS C92200 – ASTM B61; or UNS C83600 – ASTM B62; or UNS

C84400 – ASTM B584,

o Stainless Steel: Grade F 316, UNS S31600 – ASTM A182; or Type 316, UNS S31600 – ASTM A276; or Grade TP316, UNS S31600 – ASTM A312; or Grade

CF8M, UNS J92900 – ASTM A351,

o Copper Nickel: 8323 ACTION TO ADD.

Piping and tubing:

o Aluminum: 5086-H32, o Copper: Type K, ASTM B88, o Copper-Nickel (CuNi): seamless Pipe and Tube – ASTM B466; or Welded Pipe

– ASTM B467,

o Steel: ASTM A36; or ASTM A53, types E or S, grade B; or ASTM A106, grade

B, o Stainless Steel: Grade TP316 or TP316L, UNS S31600 or S31603 – ASTM A312 or ASTM A213.

078-3 Fabric Material

Fabric for covers, canopies and upholstery shall be marine grade as well as fade, stain, and mildew resistant. The fabric color shall be as near match as possible to the surface color it is mounted to or covering unless otherwise noted. Fabrics shall be easy to maintain and waterproof and/or breathable where required. All seams, edges, grommets, fastening points and areas of chafe shall be reinforced.

Venting is…