Att1_Expeditionary_11m_Spec_16Nov17_Clear.pdf

Expeditionary 11m RIB Mk4 Specification 16 November 2017

UNITED STATES NAVY

EXPEDITIONARY 11 METER RIGID INFLATABLE

BOAT MK4

for

NAVAL EXPEDITIONARY COMBAT COMMAND

SPECIFICATION

REV. -

16 November 2017

REVISION HISTORY

Date Summary Of Change Version

TABLE OF CONTENTS

REVISION HISTORY

TABLE OF CONTENTS

SECTION 0: GENERAL GUIDANCE AND ADMINISTRATION

040 INTRODUCTION AND GENERAL DESCRIPTION

040-1 BACKGROUND

040-2 CONFIGURATIONS

042 GENERAL ADMINISTRATIVE REQUIREMENTS

042-1 GENERAL REQUIREMENTS

042-2 DEFINITIONS

042-3 CONTRACT DRAWINGS

042-4 REFERENCED DOCUMENTS

042-5 ORDER OF PRECEDENCE

042-6 CONTRACTOR'S WARRANTY

042-7 ALTERNATE ITEMS

070 GENERAL REQUIREMENTS FOR DESIGN AND CONSTRUCTION

070-1 VESSEL CHARACTERISTICS

070-2 ENVIRONMENTAL CONDITIONS

070-3 LOAD CONDITIONS

070-4 CONFIGURATION MANAGEMENT

070-5 AMERICAN BOAT AND YACHT COUNCIL (ABYC) STANDARDS

070-6 ALTERATIONS

070-7 EQUIPMENT INSTALLATION

070-8 TOLERANCES

071 ACCESS

071-1 ACCESSIBILITY

073 NOISE, VIBRATION, AND RESILIENT MOUNTINGS

073-1 MECHANICAL VIBRATION

074 WELDING AND ALLIED PROCESSES

074-1 GENERAL

074-2 VISUAL INSPECTIONS

074-3 CRITICAL WELDED ASSEMBLIES

075 FASTENERS

078 MATERIALS AND CORROSION CONTROL

078-1 MATERIALS

078-2 CORROSION CONTROL

078-3 BEDDING COMPOUND

078-4 NON-BIODEGRADABLE MATERIALS

078-5 FABRIC MATERIAL

078-6 NON-METALLIC MATERIALS

080 INTEGRATED LOGISTIC SUPPORT

080-1 PACKAGING

083 SPARES

083-1 INITIAL SPARES LIST

084 TRANSPORTATION AND HANDLING

084-1 AIR TRANSPORT

084-2 ROAD TRANSPORT

084-3 MARINE TRANSPORT, LAUNCH AND RECOVERY

084-4 BOAT TIEDOWNS

084-5 TIEDOWN STRAPS

084-6 ROUGH TERRAIN TRAILER (RTT)

085 TECHNICAL DATA PACKAGE (TDP)

085-1 DRAWINGS

085-2 BILL OF MATERIALS (BOM)

085-3 COMMERCIAL OFF-THE-SHELF (COTS) TECHNICAL MANUALS AND DOCUMENTATION

085-4 BOAT TECHNICAL MANUAL

085-5 OEM CERTIFICATION LETTERS

085-6 OEM WARRANTIES BOOKLET

085-7 WIRING DIAGRAM

085-8 TESTS AND TRIALS REPORTS

085-9 MASTER DATA INDEX (MDI)

085-10 TDP FORMAT

085-11 TDP SUBMITTAL

085-12 TDP ACCEPTANCE

088 HUMAN SYSTEMS INTERFACE

088-1 ERGONOMICS

092 TESTING

092-1 GENERAL

092-2 TEST CERTIFICATIONS

094 TRIALS

094-1 BUILDER'S TRIALS (BT)

094-2 PRE-DELIVERY INSPECTION AND TRIALS (PDIT)

096 WEIGHT

096-1 WEIGHT ESTIMATES AND REPORTS

096-2 DETERMINATION OF WEIGHTS

096-3 QUALITY CONTROL WEIGHING

099 PHOTOGRAPHS

099-1 PHOTOGRAPHS

SECTION 1: HULL STRUCTURE

100 GENERAL REQUIREMENTS FOR HULL STRUCTURE

100-1 DEFINITIONS

100-2 GENERAL REQUIREMENTS FOR STRUCTURE

100-3 LAMINATE REQUIREMENTS

100-4 HIGH STRENGTH ATTACHMENTS

100-5 FOUNDATIONS

100-6 PRECONSTRUCTION TEST PANELS

100-7 INSPECTIONS

100-8 HULL SAMPLES

100-9 LAMINATE REPAIRS

110 SHELL AND SUPPORTING STRUCTURE

110-1 BEACHING SHOE

130 HULL DECKS

130-1 DECK

130-2 DECK DRAINS

150 CONSOLE

166 COLLAR

166-1 INFLATABLE COLLAR

166-2 INFLATABLE COLLAR TESTS

167 DOORS AND HATCHES

169 SPECIAL PURPOSE CLOSURES AND STRUCTURES

169-1 SWIM PLATFORM

169-2 TRANSOM DOOR “TAILGATE”

169-3 CANOPY

169-4 WEATHER CURTAIN SET

169-5 FORWARD ARCH

169-6 AFT ARCH

SECTION 2: PROPULSION

200 PROPULSION PLANT, GENERAL

200-1 PROPULSION PLANT

200-2 ARRANGEMENT OF MACHINERY

233 INBOARD ENGINES

233-1 INBOARD DIESELS

241 PROPULSION REDUCTION GEARS

241-1 GEAR/TRANSMISSION

243 PROPULSION SHAFTING

243-1 FRP DRIVE SHAFT

247 WATERJET PROPULSORS

247-1 WATERJET PROPULSION

252 PROPULSION CONTROL SYSTEM

252-1 PROPULSION INSTRUMENT MARINE PACKAGE

252-2 PROPULSION CONTROLS/CABLES

252-3 DYNAMIC POSITIONING SYSTEM

256 COOLING SEAWATER SYSTEM

256-1 RAW WATER SUPPLY

256-2 MAIN ENGINE AUXILIARY FRESH WATER RUN/FLUSH CONNECTION

259 EXHAUST SYSTEM

262 MAIN PROPULSION LUBE OIL SYSTEM

262-1 ELECTRIC FAST LUBE OIL CHANGE SYSTEM (FLOCS)

SECTION 3: ELECTRIC PLANT

300 GENERAL REQUIREMENTS FOR ELECTRIC PLANT

300-1 SUITABLE FOR MARINE ENVIRONMENT

300-2 PANEL COVERS

300-3 LIGHTNING PROTECTION

300-4 SWITCHES

300-5 BONDING SYSTEM

300-6 ENCLOSURES

303 PROTECTIVE DEVICES

303-1 DC AND AC OVERCURRENT PROTECTION

304 ELECTRICAL CABLE, WIRING, AND CONNECTIONS

304-1 WATERTIGHT CONNECTIONS

304-2 CABLE SUPPORTS

304-3 MARINE MULTI-CONDUCTOR CABLE

304-4 BATTERY CABLE ARRANGEMENT

304-5 ELECTRICAL CONNECTIONS

304-6 WEATHERPROOFED CONNECTORS

304-7 WATERTIGHT CABLE PENETRATIONS

304-8 CABLEWAYS

310 GENERATORS

310-1 INTEGRATED 120 VAC GENERATOR

313 BATTERIES

313-1 BATTERIES

313-2 BATTERY CHARGING

313-3 BATTERY VOLTMETER

313-4 SHORE POWER BATTERY CHARGER (120 VAC TO 24 VDC)

320 POWER DISTRIBUTION SYSTEMS

320-1 DC POWER DISTRIBUTION SYSTEM

320-2 AC POWER DISTRIBUTION SYSTEM

320-3 SHORE POWER SYSTEM (120 VAC/60 HZ)

320-4 OUTLETS (12 VDC)

320-5 OUTLETS (120 VAC)

324 PANELS

324-1 ELECTRICAL CIRCUIT BREAKER PANELS

330 LIGHTING

330-1 ELECTRONIC DIMMER

330-2 BLACKOUT SWITCH

330-3 OVERHEAD LED LIGHTING

330-4 SPECIAL OPERATIONS LIGHT

330-5 HANDHELD SEARCHLIGHT

330-6 DECK WORK LIGHTS

330-7 NIGHT VISION IMAGING SYSTEMS (NVIS) COMPATIBILITY

SECTION 4: COMMAND AND CONTROL

405 ANTENNA REQUIREMENTS

405-1 ANTENNA RESERVATIONS

405-2 ANTENNA INSTALLATIONS

421 NON-ELECTRICAL/ELECTRONIC NAVIGATION AIDS

421-1 MAGNETIC COMPASS

422 ELECTRICAL NAVIGATION AIDS

422-1 NAVIGATION LIGHTS

422-2 INTEGRATED ELECTRONIC NAVIGATION SYSTEM

422-3 AUTOPILOT

422-4 MILITARY GPS DISTRIBUTION SYSTEM

430 INTERIOR COMMUNICATIONS

430-1 VEHICLE INTERCOM (VIC-5) RESERVATIONS

441 RADIO SYSTEMS

441-1 VHF RADIO (STANDARD HORIZON GX2200)

441-2 TACTICAL RADIO RACK

443 VISUAL AND AUDIBLE COMMUNICATION SYSTEMS

443-1 NAVIGATION HORN

443-2 LAW ENFORCEMENT HAILER/SIREN SYSTEM

443-3 INFRARED (IR) STROBELIGHT

455 IDENTIFICATION SYSTEMS

455-1 BFT

SECTION 5: AUXILIARY SYSTEMS

500 GENERAL REQUIREMENTS FOR AUXILIARY SYSTEMS

500-1 MECHANICAL COMPONENTS

500-2 THRU-HULL FITTINGS AND VALVES

500-3 FLUID SYSTEMS CONNECTIONS

505 HOSES

505-1 HOSES

505-2 HOSE INSTALLATION

505-3 HOSE CLAMPS

512 HEATING, VENTILATION, AND AIR CONDITIONING (HVAC)

512-1 ENGINE COMPARTMENT VENTILATION

512-2 CONSOLE BLOWER

529 BILGE/DRAINAGE SYSTEM

529-1 PORTABLE MANUAL BILGE PUMP

529-2 ELECTRIC BILGE PUMP

529-3 HULL DRAINS

541 FUEL SYSTEM

541-1 FUEL TANK (NON-INTEGRAL)

541-2 FUEL SOUNDING

541-3 FUEL LEVEL GAUGE

541-4 FUEL VALVES

541-5 REMOTE FUEL SHUTOFF

541-6 FUEL/WATER SEPARATOR AND FILTER

541-7 FUEL STRIPPING SYSTEM

555 FIREFIGHTING

555-1 PORTABLE FIRE EXTINGUISHERS

555-2 ENGINE COMPARTMENT FIXED, CLEAN AGENT FIRE EXTINGUISHING SYSTEM

561 STEERING CONTROL SYSTEMS

561-1 HYDRAULIC STEERING SYSTEM

561-2 EMERGENCY STEERING SYSTEM

565 TRIM AND HEEL CONTROL SYSTEMS

565-1 TRIM TABS

581 ANCHOR HANDLING

581-1 FORTRESS ANCHOR

582 MOORING AND TOWING

582-1 FORWARD AND AFT TOW PROVISIONS

582-2 BOW EYE

582-3 TOW PENDANT

582-4 CLEATS

582-5 ATTACHMENT OF FITTINGS

583 BOAT HANDLING AND STOWAGE SYSTEMS

583-1 DAVIT FOUNDATION

583-2 UUV DAVIT (EXMCM CONFIGURATION)

583-3 UUV STOWAGE CRADLE (EXMCM CONFIGURATION)

592 DIVER SUPPORT SYSTEMS

592-1 DIVE LADDER

SECTION 6: OUTFIT AND FURNISHINGS

600 OUTFIT

600-1 BOAT HOOK

600-2 RING BUOY

600-3 U.S. FLAG

600-4 MOORING LINES

600-5 COLLAR PUMP

600-6 COLLAR REPAIR KIT

600-7 BOAT COVER

600-8 EMERGENCY POSITIONING INDICATING RADIO BEACON (EPIRB)

602 LABELING

602-1 HULL REGISTRY NUMBER (HRN)

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)

611 HULL FITTINGS

611-1 DECK CARGO TIEDOWNS

611-2 SINGLE POINT HOISTING FITTINGS

611-3 SINGLE POINT HOISTING SLING

611-4 HOISTING HARDWARE

630 PRESERVATIVES AND COVERINGS

630-1 PAINT AND GEL COAT

630-2 STAINLESS STEEL TREATMENT

630-3 ANODES

630-4 EXTERIOR NON-SKID

662 WORKING SPACES AND SEATING

662-1 SEATING - AFT OF CONSOLE (CREW AND PASSENGERS)

670 STOWAGE SPACES

670-1 STOWAGE (GENERAL)

670-2 STOWAGE COMPARTMENT

SECTION 7: ARMAMENT

700 ARMAMENT

700-1 MACHINE GUN FOUNDATIONS

700-2 READY SERVICE AMMUNITION STORAGE

SECTION 0: GENERAL GUIDANCE AND ADMINISTRATION

040 INTRODUCTION AND GENERAL DESCRIPTION

040-1 Background

The 11 meter Rigid Inflatable Boat (11m RIB) is a multi-purpose platform with several distinct missions. With the emergent establishment of an enduring, Explosive Ordnance Disposal Mine Countermeasure Platoon (EOD MCM PLT), Very Shallow Water operations (VSW) and MK 18 UUV family of systems (FoS) capability for near-term operational missions, an Expeditionary variant of the 11m RIB is required. Highest priority is placed on fielding the MK 18 UUV FoS, with associated Expeditionary 11m RIB variants to conduct assigned missions.

A configuration of the Expeditionary 11m RIB equipped with a vehicle Launch, Recovery, and Handling (LR&H) system for interface with the MK 18 Mod 2 UUV will be referred herein as the ExMCM configuration. This configuration will have the capability to launch, recover, and handle two (2) Unmanned Underwater Vehicles (UUV) using two (2) davits and two (2) vehicle stowage cradles located in the aft deck of the boat for Mine Counter Measure (MCM) operations.

A configuration of the Expeditionary 11m RIB referred to herein as the VSW configuration incorporates an empty aft deck for the stowage and deployment of two (2) F470 Combat Rubber Raiding Crafts (CRRC) or one (1) F580 CRRC.

The 11m RIB platform entered service with the U.S. Navy in the early 2000s. Since then sequential Mk numbers designate major changes to the 11m RIB configuration. Before this Specification, the most recent configuration update was the fourth version of the 11m RIB (11m RIB Mk4). The Expeditionary 11m RIB will use the same hull form as the 11m RIB Mk4 for commonality purposes throughout the fleet.

040-2 Configurations

This Specification describes two (2) configurations of the Expeditionary 11m RIB: the Expeditionary Mine Counter Measure (ExMCM) configuration and the Very Shallow Water (VSW) configuration.

Specification section headers and Contract Drawing titles indicate where features are unique to only a specific configuration. The below table summarizes the differences between the configurations throughout this Specification. Commonality shall be maintained for all major components such as engines, trailers, hoisting slings, and tie down straps on all configurations.

Commonality shall be maintained in other respects as much as practicable.

Section # Description VSW Configuration ExMCM Configuration

070-3 Load Conditions:

Payload

9 people @ 285 lbs each

2 CRRC’s @ 683lbs each

CRRC gear @ 500lbs

6 people @ 285 lbs each

2 UUV’s @ 706 lbs each

UUV gear @ 500lbs

583-2 Davit Not Required Required

583-3 Stowage Cradles Not Required Required

042 GENERAL ADMINISTRATIVE REQUIREMENTS

042-1 General Requirements

This Specification describes the general requirements of the 11m RIB (also referred to herein as “the boat”) and describes the essential features, functions, and arrangements but not necessarily the details of the design. Together with the Contract Drawings, it defines the boat as to dimensions, structure, arrangement, performance, and power.

With respect to components, this Specification in conjunction with the Contract Drawings indicates the quantity of each major component required, together with such data as size, capacity, rating or power, and applicable specifications and standards or other technical requirements, which will enable the Contractor to procure or build the component.

With respect to systems, this Specification, in conjunction with the Contract Drawings, defines the characteristics of each system to be provided. It contains additional data such as capacity of the systems under various conditions and the flexibility and segregation requirements, which will enable the Contractor to prepare construction drawings and build the systems.

With respect to materials of construction and items of machinery, equipment, and outfit, which by their nature may be manufactured or procured as distinct items; this Specification contains only the requirements and information that pertain to selection, installation, onboard performance, onboard inspection and tests, pre-installation handling, inspection and tests by the Contractor.

Requirements such as physical or chemical properties, manufacturer test and inspection requirements, or other requirements applicable only to manufacturers, are contained in specifications or standards, drawings, or in other documents referenced herein.

Where manufacturer's type, model, or other commercial designation is referred to herein, the characteristics in effect on the date of this Specification shall apply. Where model numbers or other commercial designations have been superseded since the date of this Specification, new model numbers or designations may be utilized provided the equipment characteristics associated with the new designation are equal to those associated with the superseded designation.

The Contractor is responsible for carefully and critically reviewing the Contract Drawings and this Specification prior to commencing the engineering design effort. If the Contractor finds any error, omission, discrepancy, or lack of clarity, he shall notify the Government’s Contracting Officer, in writing, not less than fifteen (15) days before commencing any work affected thereby, and request approval of the Contractor's resolution of the problem.

042-2 Definitions

The Government is the United States Government.

NAVSEA is the Headquarters of the Naval Sea Systems Command.

NSWCCD is the Naval Surface Warfare Center Carderock Division.

A Contractor is a firm holding a prime contract with the Government for design and/or construction of a boat.

A Contract Drawing is a Government Furnished Drawing forming part of the Specification, which illustrates features of the boat that are mandatory requirements.

042-3 Contract Drawings

The following Contract Drawings form a part of this Specification. Hereinafter, wherever a reference is made to "the drawings" without further identification, it shall be understood to apply to the following listed Contract Drawings.

CONTRACT DRAWINGS

Drawing Title NAVSEA Drawing Number Revision

Hull Lines and Offsets 53711-11MRX-100-5111690 -

Deck Lines and Offsets 53711-11MRX-100-5111691 -

Outboard Arrangement 53711-11MRX-100-5111692 -

General Arrangement 53711-11MRX-100-5111693 -

Hull Construction Arrangement and Details 53711-11MRX-100-5111694 -

Deck Construction Arrangement and Details 53711-11MRX-100-5111695 -

Machinery Arrangement and Details 53711-11MRX-200-5111696 -

Electrical Systems 53711-11MRX-300-5111697 -

Piping System Diagrams 53711-11MRX-500-5111698 -

Miscellaneous Details 53711-11MRX-600-5111699 -

Hoisting Arrangement and Details 53711-11MRX-600-5111701 -

Davit Arrangement and Details 53711-11MRX-583-5111702 -

Arch Arrangement and Details 53711-11MRX-583-5111704 -

In the development of construction drawings or construction of the boat by the Contractor, no departure from Contract Drawings is permitted unless such departure is specifically approved by the Government. The Contractor shall be responsible for developing all additional details necessary for the construction of the boat and correcting any and all interferences that may arise during development of construction drawings or construction of the boat (see Section 085).

Quantities given on Contract Drawings are for estimating purposes only; the Contractor is required to ascertain the exact quantities required. Reference dimensions are approximate and the Contractor is required to verify those dimensions by the use of lofting techniques, templates, etc.

A piping diagram is a Contract Drawing used to depict features, routing, functional relationships, relative locations, and nominal arrangements of the major components forming a fluid system without regard to actual physical size, shape or precise location of components.

A schematic or wiring diagram is a Contract Drawing used to depict features, routing, functional relationships, relative locations, and nominal arrangements of the major components forming an electrical system without regard to actual physical size, shape or precise location of components.

042-4 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.

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

49 CFR Part 571, Federal Motor Vehicles Safety Standards

ABYC, Standards and Technical Information Reports for Small Craft, July 2017-2018

ANSI/ASME B46.1, Surface Texture (Surface Roughness, Waviness, and Lay), 2009

ASME Y14.100, Engineering Drawing Packages, 2013

ASTM B33, Standard Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes, 2014

ASTM B928, Standard Specification for High Magnesium Aluminum-Alloy Sheet and Plate for Marine Service and Similar Environments, November 2015

ASTM D2584, Standard Test Method for Ignition Loss of Cured Reinforced Resins, 2011

ASTM D2734, Standard Test Methods for Void Content of Reinforced Plastics, 2009

ASTM D3846, Standard Test Method for In-Plane Shear Strength of Reinforced Plastics, ASTM D6272, Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending, 2010

ASTM D638, Standard Test Method for Tensile Properties of Plastics, 2014

ASTM D570, Standard Test Method for Water Absorption of Plastics, 1998e1

ASTM F593, Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs, February 2013a

ASTM F594, Standard Specification for Stainless Steel Nuts, 2009

ASTM F1166, Standard Practice for Human Engineering Design for Marine Systems, Equipment, and Facilities, 2007

ASTM F1321-14 Standard Guide for Conducting a Stability Test

AWPA Standard U1 Category UC3B, Above Ground, Exposed, 2015

AWPA Standard U1 Category UC4A, Ground Contact, General, 2015

FED-STD-595C, Colors Used in Government Procurement, 16 January 2008

IEC Standard 60529 IP, Degrees of Protection Provided by Enclosures (IP Code), 2001-

IEEE 45, Recommended Practice for Electric Installations on Shipboard, 2002

IEEE 1580, Recommended Practice for Marine Cable for Use on Shipboard and Fixed or Floating Facilities, 2010

International Regulations for Preventing Collision at Sea, 1972 (72 COLREGS) For the purposes of this specification, the U.S. Coast Guard Navigation Rules and Regulations Handbook (available at http://www.navcen.uscg.gov/?pageName=navRuleChanges) shall be interpreted as representing the requirements of the International Regulations for Preventing Collision at Sea, 1972 (72 COLREGS).

MIL-STD-209K, Interface Standard for Lifting and Tiedown Provisions, 22 February

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

Naval Ship’s Technical Manual (NSTM) Ch. 583, Boats and Small Craft, July 2012

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

NAVSEA T9008-B4-MAN-010, Inspection and Repair Manual for Fiber Reinforced Plastic Boats and Craft

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

NAVSEA DWG 602-5109421, Boat Contact Information Label Plate for All U.S. Navy Boats and Craft

NAVSEA TO300-AU-SPN-010 A, Fabrication, Welding and Inspection of Small Boats and Craft, Aluminum Hulls, NSWCCD-23-TM-2009/58 Rev B, U.S. Navy Boat Electrical Practices, August 2012

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

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

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

RR-C-271F, Chains and Attachments, Carbon and Alloy Steel, 5 July, 2011

SAE J1273, Recommended Practices for Hydraulic Hose Assemblies, 17 September, SAE J1527, Marine Fuel Hoses, 01 February 2011

SAE J1942, Hose and Hose Assemblies for Marine Applications, 29 July, 2009

SAE J2006, Marine Exhaust Hose, 08 February 2013

UL 489, Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit Breaker Enclosures, 15 January 2013

UL1426, Standard for Electrical Cables for Boats, December 2010

WSTDA-T-1, Recommended Standard Specification for Synthetic Web Tie Downs, 2015

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. The Contract Drawings,

4. 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 Contractor's Warranty

The Contractor shall provide a Contractor's Warranty for the boat, trailer, and all installed equipment, for minimum of one (1) year, starting from the date the boat enters service with the Navy's end-user. Notification of official in-service date will be provided to Contractor by the United States (U.S.) Navy Boat Inventory Manager.

042-7 Alternate Items

Where components or equipment are specified by brand name or manufacturer and model number, 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 that are equal to the specified make and model products. The following general requirements shall form the basis for determining the equivalence 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 (e.g., 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 reliability and maintainability of the alternate 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 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 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.

070 GENERAL REQUIREMENTS FOR DESIGN AND CONSTRUCTION

070-1 Vessel Characteristics

Length Overall (LOA): 39.0 feet (ft)

Beam Overall (BOA): 11.8 ft

Chine Beam: 8.8 ft

Deadrise: 20 degrees at transom (variable)

Total Installed Fuel Capacity: 280 gallons

Design Hoisting Weight (maximum): 20,000 lbs

Design Full Load Weight (maximum): 21,400 lbs

Design Draft: 2.0 ft at Full Load

Capacity (including crew): 9 persons

*Cruise Speed (at 2,800 engine RPM): 35+ knots at Full Load in calm water

*Sprint Speed (at wide open throttle): 40+ knots at Full Load in calm water

*Speeds are calculations and not the contractual speeds. The contractual cruise speed shall be minimum 30 knots at Full Load in calm water.

070-2 Environmental Conditions

The boat shall be capable of operating in ambient air temperatures between five degrees Fahrenheit (5o F) and one hundred and twenty-five degrees Fahrenheit (125o F) and water temperatures between twenty-eight degrees Fahrenheit (28o F) and ninety-five degrees Fahrenheit (95o F).

The boat shall be capable of full operation in up to Sea State 2 (2.9 foot significant wave height), reduced operations in up to Sea State 3 (4.6 foot significant wave height). The boat shall survive up to Sea State 4 conditions (6.9 foot significant wave height) at minimum headway speed and best heading.

070-3 Load Conditions

The following load conditions are defined for reference throughout this Specification for the ExMCM and VSW Configurations. These definitions apply to the engineering design values for weight and moments of the vessel in the described condition. Weight Management Process Guidance for Boats and Craft, NSWCCD-80-TR-2014/038 may be used for guidance.

Service Life Allowance (SLA): The SLA shall be 400 lbs at the Longitudinal Center of Gravity (LCG).

Payload (ExMCM Configuration): The boat shall support 3,682 lbs total payload. The notional breakdown of payload is six (6) personnel at 285 lbs each (including crew), two

(2) UUV’s stowed at 706 lbs each, 500 lbs of mission gear, and the 60 lbs 4-leg sling set.

Mission gear is defined as a combination of weapons, ammunition, miscellaneous mission gear, and cargo tied down to the deck.

Payload (VSW Configuration): The boat shall support 4,490 lbs total payload. The notional breakdown of payload is nine (9) personnel at 285 lbs each, two (2) fully fueled and loaded F-470 Combat Rubber Raiding Craft (CRRC) at 683lbs each, 500 lbs of mission gear, and the 60 lbs 4-leg sling set. Mission gear is defined as a combination of weapons, ammunition, miscellaneous mission gear, and cargo tied down to the deck.

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

ExMCM Light ship: The VSW Light ship plus installed ExMCM equipment (defined in Section 583).

Boat Scale Weight Condition: Light Ship plus full fuel. If the boat is weighed without full fuel, the fuel weight shall be added using a density of 7.1 lbs/gallon.

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

Builder’s Trials (BT) Load Condition: Light Ship plus full fuel and four (4) people @ 200 lbs each.

Pre Delivery Inspection Trials (PDIT) Load Conditions:

o Each Full Load Condition and o BT Load Condition

Boat Over-the-Road (OTR): Full Load minus personnel at 220 lbs each (ExMCM: -6 x 220 lbs = 1320 lbs; VSW: 9 x 220 = 1980 lbs).

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

boat covers, tie-down strap chafe protection, etc.).

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

Boat Design Hoisting (at sea): Light Ship plus full fuel, SLA, and 3 people @ 285 lbs each.

Trailer Design Hoisting: Trailer Curb weight.

Combined Boat and Trailer Design Hoisting: Boat OTR plus Trailer Curb weight.

Boat Internal Air Transport (IAT): Lightship plus SLA and 25% fuel, rounded up to the nearest 1,000 pounds (16,000 lbs).

Trailer Internal Air Transport (IAT): Trailer Curb weight rounded up of the nearest 1,000 pounds (5,000 lbs).

070-4 Configuration Management

The Contractor shall practice configuration management of each of the boat configurations. To achieve ready replacement of parts, the Contractor shall standardize on selection of equipment, fittings, and fabrication methods within all boats under the Contract. Components and equipment which are functionally interchangeable shall be identical. The boat shall use the least practicable variety of types and sizes of items with multiple applications.

070-5 American Boat and Yacht Council (ABYC) Standards

The boat shall meet ABYC standards and recommended practices, unless otherwise specified.

070-6 Alterations

Alterations to Original Equipment Manufacturer’s (OEM) products by the Contractor or distributer are highly discouraged. If alterations are necessary, documentation of the change shall be provided with the Technical Data Package (TDP).

070-7 Equipment Installation

Unless otherwise specified, OEM recommendations for design and installation of their products into the boat shall be followed. 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 and aligned with best industry practices.

All systems should be free from leaks and safety hazards. Workmanship shall be in accordance with industry best practices. Equipment, components, wiring and piping shall be supported clear of the bilge to the maximum extent practicable.

Galvanically dissimilar metals shall be isolated using insulating materials to prevent any path for electrical current.

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

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

Systems, equipment, and components shall be installed to facilitate accessibility for operating efficiency and for inspection, adjustment, and repair. 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.

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 oF.

Protective guards shall be installed as barriers to prevent personnel from inadvertently contacting energized and exposed electrical circuits, components, and terminals.

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 guard rails. All sharp edges exposed to personnel shall be dressed, ground or rounded to avoid injury to personnel.

070-8 Tolerances

Where tolerances are not otherwise indicated by specific dimensions on the drawings the following tolerances shall apply:

1. Dimensions given decimally:

in inches (inch-pound);

.X - ±0.06 inch .XX - ±0.03 inch .XXX - ±0.005 inch

2. Dimensions given in inches and fractions:

linear - ± 1/16 diameters, other than bolt holes, ± 1/16 radii - ± 1/16

3. Dimensions given in feet and whole inches - ±1/8 inch

4. Angles:

Whole degrees - ±1/2 degree Degrees and minutes - ±5 minutes

The tolerances shall apply to all fabrication performed from the Contract Drawings and the Contractor developed Construction Drawings, except where deviation to either relax or tighten the tolerance is noted on the drawings or required elsewhere in this Specification.

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, 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.

Where accessibility for operation or maintenance is not evident during PDIT the Contractor shall be prepared to demonstrate accessibility by operating, removing or otherwise manipulating the necessary components under realistic conditions.

073 NOISE, VIBRATION, AND RESILIENT MOUNTINGS

073-1 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 boat 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 boat operating conditions shall be incorporated in the construction of the boat.

074 WELDING AND ALLIED PROCESSES

074-1 General

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.

074-2 Visual Inspections

All welds shall be visually inspected.

Welds shall be free of slag, weld splatter, cracks, sharp irregularities 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 excessive 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.

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 Critical Welded Assemblies

The bow and stern posts, gun foundations, bow eye, lifting frames and hoisting fittings are critical welded assemblies. The following additional requirements apply for critical welded assemblies:

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-010 A, dated 5 October, 1992 (NAVSEA SPN- 10).

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 (for example, 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, available for inspection by the Government.

Fillet weld root openings - Fillet weld root openings shall not be greater than 1/16 inch.

Dye Penetrant Testing (PT) - Welds shall be dye penetrant tested before and after load testing. Welds and 1/2 inch of base metal on either side of the weld shall be free of linear indications greater than 1/16 inch long.

075 FASTENERS

Contractor assembled threaded fasteners shall be stainless steel, except as specified by detailed requirements or the OEM. Fasteners used for structural applications shall meet ASTM F593, type 316 stainless steel. Self-locking hardware shall be used unless otherwise specified.

If higher strength fasteners are required they shall be painted or preserved with a corrosion inhibitor and documented 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 pose a personnel hazard shall be avoided.

Fasteners may be threaded into structural or non-structural materials only with Government approval. Pins used for folding, removable, or stowable features shall be 316 stainless steel secured with a stainless steel lanyard to prevent loss. Pin handles may be aluminum.

Strength fittings shall not be attached to FRP hulls using tapped threaded fasteners. All strength fittings on FRP hulls shall have backed and through-bolted connections.

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 AND CORROSION CONTROL

078-1 Materials

Components or parts of equipment and machinery shall be new. When materials are referred to in this Specification without further identification, they shall be as specified in this section. Other materials for specific applications are defined in the specific sections of this Specification, or on the drawings or referenced documents that require their use.

Aluminum (if used) shall be:

Sand cast (3560 T6)

Plate and sheet (5086 H116 or 5086-H117 both ASTM B928; for non-welded applications 6061-T6 or 6061-T651 may be substituted.)

Extrusions (5086-H111; for non-welded applications 6061-T6 or 6061-T52 may be substituted.)

Drawn tube (5086-H32; for non-welded applications 6061-T6 may be substituted.)

Non-structural components such as handrails, small component brackets and wire ways may include extruded 6061 material.

Stainless Steel (if used) shall be:

Cast for general applications (UNS J92800 or J92500; for non-welded applications UNS J92900 or J92600 may be substituted.)

Cast for underwater applications (UNS J92800; for non-welded applications UNS J92900 may be substituted.)

Plate/sheet, bars/shapes, tubing, pipe (UNS S31603; for non-welded applications UNS S31600 may be substituted.)

078-2 Corrosion Control

All parts and fittings required for disassembly of systems shall be of Monel, stainless steel type 316L (or 316 if not welded), or copper alloy containing no more than 10% zinc (except manganese bronze), whichever is compatible with the basic material of the equipment. Stainless steel, if used where it is likely to be submerged in seawater, shall be type 316L.

Joined components shall be galvanically compatible with each other wherever possible, or shall be isolated to prevent galvanic corrosion. Where it is necessary to join dissimilar metals, ensure complete isolation of faying surfaces of the galvanically dissimilar metals, including fasteners, using non-water absorbent dielectric barrier or sealant materials.

078-3 Bedding Compound

Bedding compound shall be either Woolsey 2005N or Sikaflex 241.

078-4 Non-Biodegradable Materials

Use of wood and other hygroscopic or biodegradable materials anywhere on the boat is prohibited. All materials shall be marine grade and resistant to corrosion and UV exposure.

078-5 Fabric Material

Fabric for covers, canopy and upholstery shall be marine grade fade, stain and mildew resistant and as near a match in color as possible to the surface to which it is mounted 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 acceptable to ventilate covers, but must minimize or eliminate the intrusion of water.

Seats, seat fabric and foam shall be durable, provide comfort and be flame retardant.

078-6 Non-Metallic Materials

The use of non-metallic materials and metals with low magnetic properties are desired where practical to reduce the boat’s overall magnetic signature.

080 INTEGRATED LOGISTIC SUPPORT

080-1 Packaging

Packaging/shrink wrap shall be used to protect the boat during delivery.

083 SPARES

083-1 Initial Spares List

Where specified by the Delivery Order, the Contractor shall provide initial spares in accordance with Attachment 3.

084 TRANSPORTATION AND HANDLING

084-1 Air Transport

Boat and trailer combinations shall meet all requirements (size, weight, tiedowns) for air transportability in a C-130, C-17, and C-5 including personnel safety aisle criterial per the drawings. C-17 and C-5 transport should not require equipment removal. Tiedowns shall be provided on the trailer and boat per Section 084-4 to provide a restraint independent of each other of 3-Gs fwd, 2-Gs up and 1.5-Gs aft and laterally. Engineering certification/ratings shall be included for tiedowns.

Not to exceed parameters for C-130:

Height – 102 inches

Width – 107 inches

Height and width parameter are per MIL-STD-1366E (Table 24; additional guidance in MIL- STD-1791A, sec 4.2.1.5 and Appendix B, Fig. 42). Items may excess the height or width envelope if hinged or removable and are provided with proper securing for stowage during transport.

084-2 Road Transport

Boat and trailer combination shall meet all requirements for wide load with escort vehicle for road transport on Continental United States (CONUS) Highways per MIL-STD-1366E.

Boat/trailer combination shall not exceed the following dimensions:

Height – 162 inches

Width – 144 inches (12ft)

Items may exceed the height or width envelope if hinged or are otherwise collapsible for transport. Trailer components (except goal posts) shall not be removed to meet this requirement.

084-3 Marine Transport, Launch and Recovery

The boat will be used with marine transport, to include onboard stowage and at-sea underway (manned) launch and recovery from U.S. Navy ships. Launch and recovery will be from ship’s crane with the single point hoisting configuration or from a specialized launch and recovery system in the ship’s well deck or mission bay.

084-4 Boat Tiedowns

The boat shall have aluminum or stainless steel tiedown provisions including four (4) transom tiedowns, bow eye, and ten (10) side tiedowns (five (5) tiedowns per side) per the drawings.

Labeling of the tiedowns shall include load ratings in lbs. Tiedown provisions will be used for air transport, OTR transport, marine transport, and trailer hoisting.

See Section 092 for testing requirements.

084-5 Tiedown Straps

Tiedown straps shall be provided for securing the boat to the trailer for OTR and lifting that comply with “Recommended Standard Specification for Synthetic Web Tie Downs”, Web Sling & Tie Down Association WSTDA-T-1, except that:

Straps are sized for a safety factor of five (5) based on maximum boat-to-trailer design load when suspending trailer design hoisting weight beneath boat.

The trailer tiedown strap arrangement is designed so that no single strap failure will result in the trailer being ‘dropped’ during the hoist. In addition to marking required by WSTDA-T-1, all straps used in hoisting the trailer shall be permanently marked identifying the testing activity, contract number, date of testing, boat type, rating and intended usage of the strap (and leg to fitting identifier, i.e. 'FWD PORT') and a unique serial number. The optional label from WSTDA-T-1 “not to be used for hoisting” shall not be installed.

See Section 092 for testing requirements.

084-6 Rough Terrain Trailer (RTT)

A Boatmaster RTT trailer shall be provided for the boat. The boat and RTT will be towed on unimproved roads. Unimproved roads are defined as one lane trails or roads with seldom maintained loose surfaces intended for low-density traffic. The trailer shall be air transportable in a C-130 with the boat. The trailer shall be capable of supporting the boat in the OTR condition and negotiating ramp angles up to 16 degrees. The trailer shall be capable of being used for Stern Gate Launch and Recovery (SGLR) of the boat from the well deck of a U.S. Navy Amphibious ship. Provisions for easy installation of a SGLR kit shall be integrated into the trailer design.

SGLR design details will be considered Government Furnished Equipment (GFE) The trailer shall have the following characteristics:

Gross Vehicle Weight Rating (GVWR): GVWR shall not be less than the GVW defined in Section 070, Dimensions: Loaded trailer dimensions within acceptable limits for all applicable transport modes, Axle Rating: The trailer shall have three axles, each rated at 10,000 lbs (highway). The axle rating have been chosen to provide 115-120% of the GVW due to high loads seen during rough terrain transit and SGLR operations, Hub Rating: Hubs rated at highway speeds for a minimum of 50% of the axle rating, Tire Rating: The combined tire ratings per axle shall meet or exceed the axle rating, Component Capacities: Axle, wheel, and tire creep load capacities provided with trailer technical information, Frame Material: Aluminum construction, Fasteners: ASTM F593, type 316 stainless steel fasteners, flat washers, and ASTM F594 nylon insert lock nuts throughout (No threading of aluminum), Component Materials: Aluminum or 316 stainless steel components used where possible (e.g. fenders, brackets, etc.), hot-dipped galvanized steel elsewhere (e.g. axles), Tires: Continental Scandinavia LD3 17.5 tire with run flat insert and wheel, Tire Pressure Indicator: Each tire shall be provided with a visual indicator of tire inflation.

Spare: Matching and mounted spare tire and wheel, Suitable For Marine Environment: Actuation components shall be capable of total submersion in salt water for short periods of time, Brakes: Surge brakes on each axle using all stainless steel disc brake components

(including stainless steel rotors, stainless steel brake caliper assembly with stainless steel cylinder and guide pins). NOTE: no electric brakes, Brake Lines: Stainless steel brake lines with smooth regular bends (two inch (2”) minimum radius). Flex hoses, where necessary, shall be stainless or Kevlar, and have a minimum rating of 3,000 psi, Suspension: Suspension type (e.g. leaf spring, torsional axle, or air with trailing arm) and strength consistent with trailer GVWR, Hubs: Positive pressure hub system (Air-Tight) to prevent contamination of hub lubrication, Bearings: Bearings shall be U.S. made, Electrical System: The trailer shall be equipped for 12 Vdc (with commercial seven (7)-pin round plug with flat connectors) and 24 Vdc (with twelve (12)-pin NATO plug), Electrical Materials: Electrical system components shall be marine grade: all connections shall be made using ring terminals sealed with heat shrink at all connections.

Electrical cables and conductors shall be secured by stainless steel supports or stainless steel banding with chafing protection (no zip ties), Lighting: Lighting shall be submersible Light Emitting Diode (LED), Storage: On-trailer stowage for tools and tiedown straps with drain holes, Ladder: Removable forward ladder extending to bow of the boat, Winch: Manual winch with cable (or Dyneema Rope) and closed end hook.