NAVSEA_T9008-CV-SBS-010_(CRRC_SPEC).pdf

• ~AVSEA T9008-CV-SBS-OI0

SPECIFICATIQNS •

F~OR BUILDING

• COMBAT RUBBER RAIDING CRAFT

(CRRC)

NAVAL SEA SYSTEMS COMMAND

DEPARTMENT OF THE NAVY

WASHINGTON D.C. 20362-5101

NAVSEA T9008-CV-SBS-OI0

SPECIFICATIONS

FOR BUILDING

C,OMBAT RUBBER RAIDING CRAFT

(CRRC)

NAVAL SEA SYSTEMS COMMAND

DEPARTMENT OF THE NAVY

WASHINGTON D.C. 20362-5101

NAV8EA T9008-CV-8B8-010

SPECIFICATIONS FOR BUILDING

COMBAT RUBBER RAIDING CRAFT

(CRRC)

Approved

For Commander

Naval Surface Warfare Center, Carderock Division

May 1996 (Revised 1 April 1997)

NAVSEA T9008-CV-SBS-OIO

SPECIFICATION FOR BUILDING

COMBAT RUBBER RAIDING

CRAFT, (CRRC), 8-PERSON

This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, as a replacement for NSN-1940-01-262-3993, and is available for use by all Departments and Agencies of the Department of Defense.

1. SCOPE.

1.1 Scope. This specification covers an 8-person inflatable Combat Rubber Raiding Craft (CRRC), complete, including its inflation system and equipment. See 6.5.2 for definition of

CRRC.

2. APPLICABLE DOCLTMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements docllments cited in section 3 and 4 of this specification, whether or not they are listed.

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this docllment shall be addressed to: Carderock Division, Naval Surface Warfare Center, Combatant Craft Department, Code 23, Detachment Norfolk, 116 Lake View Parkway, Suite 200, Suffolk, VA 23435-2698 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

AMSC N/A FSC 1940

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

2.2 Government documents.

2.2.1 Specifications and standards. The following specifications and standards form a part of this Specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation.

STANDARDS

FEDERAL

FED-STD-191 - Textile Test Methods.

MILITARY

MIL-STD-810 - Environmental Test Methods and Engineering Guidelines.

(Unless otherwise indicated, copies of federal and military specifications, standards, and hand books are available for the Standardization Documents Order Desk, Building. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)

2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation.

DEPARTMENT OF TRANSPORTATION (DOT), COAST GUARD

Code of Federal Regulations, Title 46, Subpart 147.04-1 - Cylinder Requirements.

Code of Federal Regulations, Title 49, Parts 171-178 - Hazardous Material

Regulations.

Code of Federal Regulations, Title 49, Parts 100-177 - Hazardous Material

Transportatioll.

(The Code of Federal Regulations (CFR) and the Federal Register (FR) are for sale on a subscription basis by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. When indicated, reprints of certain regulations may be obtained from the Federal agency responsible for issuance thereof.)

2.2.3 Non-Government publications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of docllments not listed in the DoDISS are the issues of the documents cited in the solicitation.

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTMD412 - Rubber Properties in Tension.

ASTMD413 - Rubber Property - Adhesion to Flexible Substrate.

ASTMD471 - Rubber Property - Effects of Liquids.

ASTM D 573 - Rubber - Deterioration in an Air Oven.

ASTMD750 - Rubber Deterioration in Carbon - Arc Weathering Apparatus.

ASTMD751 - Coated Fabrics.

ASTMD2261 - Tearing Strength of Woven Fabrics by the Tongue (Single Rip)

Method (Constant-Rate-of-Extension Tensile Testing Machine).

(Application for copies shall be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.)

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI/NCSL Z 540-1 - General Requirements for Calibration Laboratories and

Measuring and Test Equipment.

(Application for copies shall be addressed to the American National Standards Institute, 11W 42nd Street, 13th Floor, New York, New York 10036.)

NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC. AGENT

National Motor Freight Classification

(Application for copies shall be addressed to the American Trucking Association, Inc., ATTN:

TRAFFIC Dept., 2200 Mill Road, Alexandria, VA 22314.)

UNIFORM CLASSIFICATION COMMITTEE AGENT

Uniform Freight Classification Ratings, Rules and Regulations

(Application for copies shall be address to the Uniform Classification Committee Agent, Tariff Publication Officer, Room 1106,222 South Riverside Plaza, Chicago, IL 60606.)

(Non-Government standards and other publications are normally available from the organiza tions that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.)

2.2.4 Order of precedence. In the event of a conflict between the text of this specifications and the references cited herein, the text of this specifications shall take precedence. Nothing in this specifications, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained.

3.0 REQUIREMENTS

3.1 General. This craft has unique mission requirements and is used for the insertion and ext~action of Special Operation Forces of all branches of service into hostile environments, therefore, its performance and quality is essential for the safety and survivability of personnel. The following requirements are considered essential to the needs of the Government (see 6.5.4).

These characteristics shall be used to determine if an offeror's offering item meets the requirements of this specification. The craft shall be constructed to the requirements of these specifications and the contract or purchase order. The craft shall be an existing product or non-developmental item (NDI) which can meet the requirements of this specification with only minor modifications.

3.2 First article and qualification.

3.2.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection in accordance with 4.2 (see 6.3). Any changes or deviations of the craft from the approved first article during production will be subject to the approval of the contracting officer. Approval of the first article will not relieve the contractor of his obligation to furnish inflatable craft conforming to this specification.

3.2.2 Qualification. It is the government's intention to establish a Qualified Products List (QPL) for future acquisition of the subject Combat Rubber Raiding Craft (CRRC). When the QPL has been approved, those offerors who have received an acceptable rating on their craft submitted and tested under this procurement shall automatically be included on the QPL without further qualification testing. The establishment of the QPL shall be conducted in accordance with Federal Acquisition Regulation (FAR) part 9.2.

3.3 Recovered materials. Unless otherwise specified herein, all equipment, material and articles incorporated in the products covered by these specifications shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term "recovered materials" means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specifications unless otherwise specifically stated.

3.4 Design, manufacture and assembly.

3.4.1 General. All materials used in the construction of the craft shall be of good quality and suitable for the purpose intended. Materials shall not be subject to deterioration from the effects of weathering under the conditions of usual stowage, nor from contact with salt water or spray or petroleum products. The craft shall be resistant to deterioration when exposed to sunlight.

I 3.4.2 Body. The craft shall consist of a hull tube, an inflatable keel, and stability tubes fitted to the underside of the craft.

3.4.2.1 Hull tube. A main hull tube shall be provided. The hull tube shall be divided into a sufficient number of chambers to ensure the craft meets the performance requirements of 3.9.

Each chamber shall be equipped with a manual inflation/deflation valve.

3.4.2.2 Keel. A single, full length inflatable keel shall be provided. The keel shall be a single chamber fitted with a manual inflation/deflation valve and attached to the craft's bottom by hook and pile (velcro) or other suitable means which will provide for easy removal and replacement without the use of adhesives or tools.

3.4.2.3 Bulkheads. The hull tube shall be fitted with vertical bulkheads, dividing the tube into compartments of approximately equal volume. The construction of the bulkheads shall be such that when one compartment is inflated to 200 percent of the working pressure with the adjacent compartment deflated, it will successfully meet the test requirements of paragraph 4.7.7.

3.4.2.4 Hull stability. The underside of the craft shall be fitted with stability tubes or an alternate design may be proposed. The stability tubes, or alternative design, shall; (1) provide the necessary rigidity of the craft in order to meet the performance requirements of section 3.9 of this specification; (2) reduce water spray of the craft which lowers the overall detectability and improves craft dryness; (3) absorb wave impact to improve ride comfort, reduces personnel fatigue, improve craft tracking, handling and engine tiller response; and (4) take shape automatical ly with the inflation of the hull tube. If tubes are provided, each lower stability tube shall be a single chamber with no bulkheads. Inflation shall be via transfer connections to the hull tube which incorporate an in-line non-metallic gate type valve capable of isolating the stability tubes from the hull tube in the event of failure of either tube.

3.4.2.5 Rubbing strips. Rubbing strips shall be located around the entire outer side of the main buoyancy tube. Additionally, rubbing strips shall be installed on the underside of the craft along the keel and other areas subject to abrasion. The rubbing strips shall, as a minimum, exhibit the following physical characteristics:

a. Hardness, Shore A - 65 plus or minus 5

b. Tensile Strength - 13.8 MPa

c. Ultimate Elongation - 400 percent

d. Color - Black

3.4.2.6 Other coated fabric structures. Other fabric structures shall be provided in accordance with the following requirements.

3.4.2.6.1 Materials. All materials required for non-inflatable applications shall be the same coated fabric selected for the flotation tubes.

3.4.2.6.2 Bottom. The hull bottom shall be constructed to provide sufficient tension to prevent sag when the craft is inflated to the design working pressure and shall be bonded to the underside of the main hull tube. The hull bottom shall be smooth from side-to-side and bow-to-stern. The hull bottom fabric shall be the same as the flotation tube fabric, however, a variance in the weight of the coated fabric is permitted as long as all technical and performance requirements are met.

3.4.2.6.3 Chafing patches. Chafing patches shall be installed as required to protect the fabric structures from abrasion damage.

3.4.3 Designed working pressure. The designed working pressure, maximum, shall not exceed 300 mbar (4.3 psi).

3.4.4 Length. The craft shall be of sufficient length to accommodate eight (8) mission/combat ready personnel with equipment.

I 3.4.5 Beam. The craft shall be of sufficient beam to accommodate eight (8) mission/combat ready personnel with equipment.

3.4.6 Craft weight. The craft weight, maximum, shall be 190 kg (420 lbs) (craft, rigid floor, outfit, transom stiffeners).

3.4.7 Stored dimensions. The stored dimensions without floorboards shall be a maximum of

0.75 meters (30 inches) in diameter by 1.50 meters (60 inches) wide.

3.4.8 Transom. The design criteria for the transom and its attachment to the craft shall be developed from the engine configuration (twin 35 horsepower outboard Improved Marine Amphibious Reconnaissance System (IMARS) pumpjet engines or a single 55 horsepower centerline-mounted outboard long shaft engine) that produces the maximum stresses from the forward/reverse thrust and weight of the engine(s). To ensure durability at the point of engine attachment, an aluminum face plate shall be secured to the forward face of the transom and shall include a lip to prevent complete loss of an engine should slippage occur. The transom shall be equipped with collapsible self-bailers of sufficient size to adequately drain the craft. A transom stiffener kit, similar to figure 1, shall be provided with each craft. Anti-splash devices shall be attached to the transom to ensure water generated by engine operation does not enter into the aft section of the craft during operation.

3.4.9 Thrustboard. A thrustboard shall be permanently installed in the bow section. Its purpose, together with the transom, is to provide horizontal rigidity for stability and performance of the craft. The thrustboard shall be black in color and sealed to prevent moisture damage. Two corrosion-resistant steel eye bolt attachments shall be installed on the thrustboard to accept the front ends of the lifting sling.

3.4.10 Propulsion engines capability. The craft shall be capable of operating with the following three (3) engine configurations: dual IMARS engines, a single Marine Amphibious Rec~mnaissance System (MARS) 35 hp engine, a single long shaft centerline-mounted 55 hp engme.

NAVSRA T900R-CV-SnS-OlO

CLEVIS PIN

3HOCK AB30RDINO

TunNDUCI<LC BUSHING

COV~1'l /r HI:::XNUT

A ~ - Ull,K WAtiHt::.H

DOLT CYC

i HI:::X NUT

\\TRANSOM

MC )lIN IIN(; 1-'1 A I t-TUI=lNBUCKLI:::

I {){:K WASHt-H

FIGURE I. Transom stiffener assembly.

3.4.11 Flooring system. A flooring system consisting of a removable floor panel assembly shall be provided with each craft. The flooring system shall be designed so that when removed the optional roll-up flooring system (see 3.12.1) can be installed. The flooring systems shall be designed and constructe<l to withstand all in-service operating conditions without damage or permanent deformation. Inflatable tube fabric shall extend forward of the thrustboard to the bow tube to protect the hull alld keel from damage.The removable floor panels shall extend from the transom to the thrustboard and shall interlock with each other, the transom, and the thrustboard.

The edges of the panels shall be designed to prevent damage to the craft. The preferred material for the floor panel is aluminum, however, other suitable materials may be used. The top surface of the floor panels shall be coaled to provide a non-skid sllrface. Securing holes shall be provided in each floor panel as sho\\n in figllre 2.

DRILL (2) 112" HOLES IN BOTH

SIDES OF EACH FLOOR PANEL

FIGURE 2. Floor tiedown fitting assembly.

3.4.12 Inflationlnd Deflation system. The craft shall be capable of being inflated by an automatic inflation syste:n and a manual inflation system. The deflation of the craft shall be by either inflation system.

3.4.12.1 Automatic inflation system. The automatic system shall be capable of inflating the craft to designed workin 5 pressure in less than 4 minutes at minus (-) 23 degrees centigrade using a 100 cubic foot compre,;sed air (SCUBA) system. The SCUBA system shall attach to the irlboard side of the port and starboard aft chambers of the craft hull tube using suitable hoses and connec tion fittings. The interio:~ of the aft chambers shall be capable of accepting C02 inflation gases without damage to the fabric. The connection fitting shall be a quick connect/disconnect type capable of preventing air loss when the automatic inflation system is not used. The hull tube shall be fitted with valves capable of transferring the inflation air from one chamber to an adjacent chamber and capable of l)eing closed to isolate the chamber in the event of damage or failure of an adjacent chamber. The irlflation system shall be designed to inflate the stabilizing tubes on the underside of the hull tube via a transfer connection to the adjacent stem compartments of the hull tube. The transfer connection shall incorporate an in-line non-metallic gate type valve capable of isolating the lower tube from the hull tube in the event of failure of either tube.

3.4.12.2 Manual inflation system. The manual inflation system consists of an inflation/deflation valve installed on each inflatable chamber of the hull tube and the inflatable keel.

The valve shall be in accordance with para 3.5.9. The craft shall be capable of being manually inflated by attaching the foot pump to each inflation/deflation valve and inflating to designed working pressure. The stlbilizing tubes are inflated by opening the in-line non-metallic gate type valve and transferring air from the aft cambers of the hull tube.

3.4 .12.3 Deflation system. The craft shall be capable of being deflated by means of the inflation/deflation valve on each hull tube chamber and the inflatable keel. The stabilizing tubes are deflated using the same transferring method used for inflation. In addition to the inflation/deflation valves installed for the manual inflation system, two (2) dump valves, one each port and starboard, shall be installed on the top side of the hull tube end cones just forward of the end caps. The dump vah'es shall be in accordance with para 3.5.9. The dump valves are used to evacuate any trapped air in the tube when the craft is being recovered. The craft is generally recovered bow first, therefore, when the bow of the craft is submerged the transfer valving system allows any trapped air to migrate to the aft chamber where the dump valves are opened allowing the air to escape.

3.4.13 Capacity. Tbe capacity, minimum, shall be 1,230 kg (2700 lbs) (to include fuel, engines, and payload).

3.4.14 Sea States. The craft shall be operable in a Sea State 3 and survivable in a Sea State 5.

See 6.5.5 for definition of Sea States.

3.4.15 Hull construction. The hull construction shall be nylon, polyester, or Kevlar fabric with urethane, Hypalon ,)r Neoprene coatings. Fabric must satisfy the requirements of 3.8.

3.4.16 Air transportability. The craft shall be capable of hatch exit and fully functional following air-drop from C-130 in fully inflated condition with equipment and from CH-46 in partially inflated condition with equipment. A hard duck deployment is defined as 450 meters above ground level and a soft duck drop is defined as 8 meters above ground level.

3.4.17 Color. To minimize detectability the preferred color of the craft is non-reflective black.

3.4.18 Laps and seams. Each seam shall be at least as strong as the weakest of the materials joined by the seam. Each seam shall be covered with tape where necessary to prevent lifting of and damage to fabric edges. Vulcanization shall not be used.

I 3.4.19 Stitching. No stitching shall be used in any of the craft seams which defines an air retention chamber. In areas where stitching is permitted, each row shall be straight and parallel to the seam edge. The seam edges shall be properly forced out and shall not contain any folds.

3.4.20 Dissimilar materials. Where dissimilar materials are joined in the construction of the inflatable craft, provisions shall be made to prevent loosening or tightening due to differences in thermal expansion, freezing, buckling, galvanic corrosion, or other incompatibilities.

3.4.21 Workmanship and materials. Quality of work throughout the craft shall be high quality, reflecting the best marine practices. Inflatable tubes shall be free from twisting and warping. All 'oints are to be neatly and accurately made. Faying surfaces shall be free from gaps, hollows or warping. Shims, filling compounds, or layering of fabric shall not be used to correct improper fit.

All sharp edges shall be dressed, ground or radiused to avoid injury to personnel. Internal comers shall be filleted and external comers shall be rounded-off. All stainless steel shall be passivated and electropolished after welding. Surface finish shall be satin finish. All exterior aluminum surfaces shall be matte finish. The interior and exterior of the craft shall be clean and free of foreign materials.

3.4.22 Temperature ranges. The craft shall not be damaged in storage throughout an air temperature range of -30°C to +65°C. The craft shall operate throughout a sea water temperature range of -1°C to +30°C. When subjected to these conditions the craft fabric shall not crack, crease or distort in any way when stored for a period of 5 years.

3.5 Craft fittings.

3.5.1 Lifting handles. Twelve (12) lifting handles (six (6) port and six (6) starboard) shall be installed on the hull tube for manually lifting the craft by personnel. The aft handle shall be installed just forward of the hull tube cone. The distance between the craft and the handle shall be approximately 75 millimeters to accommodate the insertion of a gloved hand with the palm of the hand gripping the handle. Handles shall be constructed similar to figure 3. One metallic, corrosion-resistant carrying/mooring handle shall be installed on the bow. This handle shall be designed for front end mooring of the craft and shall be furnished with an attached eight (8) meter long black nylon mooring line.

TUBULAR WEBBING

STITCHED TOGETHER

3/4" NYLON ROD

7S rnm

FIGURE 3. Lifting handle.

3.5.2 Lifelines. A lacing cuff attached to the top of the main buoyancy tube from bow to stem and fitted with stainless steel grommets spaced approximately 400 millimeters (16 inches) apart with a 14 millimeter diameter black nylon lifeline fastened in a loop and tie arrangement through the grommets is preferred. Other similar lifeline arrangements are acceptable.

3.5.3 Equipment securing D-rings. Heavy duty D-rings shall be placed about the craft to secure a towing sling for front or rear towing operations, for fastening and securing all onboard grab lines, and for securing all troop combat packs or other organizational equipment. Heavy duty towing D-rings shall be mounted on the main buoyancy tube on the bow and stem of the craft. A total of no less than 13 Heavy Duty D-rings shall be installed on the interiors (port, starboard and bow) for securing equipment. Grab line D-rings shall be installed on the interior of the craft. All metal D-rings and all hardware shall be corrosion-resistant steel.

3.5.4 Securing lines. The craft shall be equipped with gear securing lines and grab lines for crew safety. The gear securing lines shall be installed on the interior of the craft and secured to the equipment D-rings. The grab lines shall be secured to the grab line D-rings. A 14 millimeter di ameter, double braided black nylon rope is preferred.

3.5.5 Equipment pockets. The craft shall be fitted with three (3) equal sized equipment pock ets with velcro closures. Two (2) pockets shall be located port and starboard on the interior of the craft bow area in such a way as to not interfere with the installation of the flooring, operation of the inflation system or with the installation of the boat safety kit. One pocket shall be located on the aft interior of the craft on the port hull tube just forward of the transom. The pockets shall be sized such that the following items may be distributed between them:

Ouantity

SCUBA cylinder fittings

c. Onboard repair kit containing a 3",5", and 7 1/2" mechanical repair clamps

lock open inflation/deflation valve, two (2) blanking plugs, and two (2) relief valve poppet retainers

3.5.6 Paddle stowage. The craft shall be equipped with a handle strap and a paddle pocket on the interior port and starboard tubes suitable for securely stowing paddles. The straps and pockets shall be located in such a way as to not interfere with installation of flooring or operation of the inflation system. Additional velcro straps shall be provided to prevent paddles from sliding fore and aft.

3.5.7 Hull lifting fittings. The hull lifting fittings shall be designed with a safety factor of 6 based on the hoisting weight of the craft. The hoisting weight is defined as the craft configured for operation with the twin 35 horsepower IMARS pumpjet engines, including outfit, engines, and 36 gallons (136 liters) of fuel. The weight of the twin IMARS engines with dual engine control system is approximately 290 pounds (131.5 Kg.). The fittings shall be fastened to the transom and the thrustboard of the craft to minimize the potential for the craft to fold or collapse, when being

I hoisted, should an inflatable chamber sustain damage. Folding or collapsing of the craft during hoisting could result in damage to the craft and/or injury to personnel. The lifting fittings shall be compatible with the other components of the lifting system.

3.5.8 Relief valves. A system of relief valves shall be installed in the aft chambers to protect the hull tube chambers from inadvertent overpressure. Relief valves shall not be provided for the keel or lower tubes. The relief valves shall be installed in a recessed flange that can be easily attached to the craft inflation tubes and located to avoid damage by craft personnel or their equipment. The pressure relief valves shall be manufactured by Survival Equipment Co. (SEI), Bumville MN. or Mirada Research and Manufacturing Co. (MRM), Ironton, MN (or equal). The relief valve shall relieve at a craft pressure no greater than 190 percent (%) of the designed working pressure and reseat at 120 percent (±10%) of the designed working pressure. Valve shall be capable of being rendered inoperable by design or poppet retainer. All metal parts which can cause damage to the craft fabric shall be protected.

3.5.9 InflationlDeflation valves. Inflation/deflation valves installed in recessed flanges shall be provided on each inflatable chamber of the hull tube and on the inflatable keel tube. The valve shall be manufactured by Survival Equipment Co. (SEI), Bumville MN. or Mirada Research and Manufacturing Co. (MRM), Ironton, MN (or equal). In order to prevent entry of sand or debris, the valve shall be equipped with a protective cover attached by lanyard. The valve shall be capable of being locked in an open position to facilitate deflation and shall be marked to indicate instruc tions for their proper operation. Two (2) additional valves, one each port and starboard on the top side of the hull tube aft chamber end cones just forward of the end'caps shall be provided and designated as dump valves. The dump valves are used to evacuate any trapped air in the tube when the craft is being recovered.

3.6 Craft equipment.

3.6.1 Inflation pumps. Two Bravo 10 (or equal) foot operated pumps capable of inflation and deflation shall be provided with each craft. A hose assembly adaptable to the pump on one end and a fitting compatible with the inflation valve on the other, shall be provided with each pump. The hose for each pump shall be 1.4 meters long. Each pump shall be stored in a heat sealed 8 mil polypouch with a two (2) ounce desiccant packet.

3.6.2 Onboard repair kit. An onboard repair kit shall be provided with each craft. The kit shall contain three mechanical sealing clamps, one of each size (3", 5", and 7 1/2"). The clamps shall be packaged in a heat sealed 8 mil poly pouch with a two (2) ounce desiccant packet and enclosed in a re-closable storage container to prevent water damage.

3.6.3 Pressure gauge. One pressure gauge shall be provided with each craft and be compati ble with the manual inflation system valves and have a range of 0 to 5 psig (0 to 345 mbar) marked in 0.1 psig (5 mbar) increments. The gauge shall be packaged in a heat sealed 8 mil poly pouch with a two (2) ounce desiccant packet and enclosed in a re-closable storage container to prevent water damage.

3.6.4 Towing bridle. A double braided black polyester rope towing bridle with 4.6 meter (15 foot) legs shall be provided for each craft.

3.6.5 Paddles. Six (6) paddles shall be provided, maple or ash, black, 66 inches in length, 8" x 20" blade dimension, 1 1/8" shaft diameter, commercial quality.

3.6.6 Hoisting sling. A hoisting sling manufactured from non-metallic rope or flat webbing shall be provided with each craft. The legs of the sling shall be attached to a pear-shaped link by means of eye splices and equipped with suitably sized safety snap hook end fittings on each leg.

Legs of sling shall be of proper length to allow hoisting of the craft in a level plane. The hoisting sling shall be designed with a safety factor of 6 on the hoisting weight of the craft and shall be statically tested to twice the calculated stress in each leg of the sling.

3.6.7 Spare valve kit. A spare valve kit containing one (1) pressure relief valve, one (1) lock open inflation/deflation valve, two (2) blanking plugs, and two (2) relief valve poppet retainers shall be provided. The items shall be packaged in a heat sealed 8 mil poly pouch with a two (2) ounce desiccant packet.

3.6.8 Equipment bag. An equipment bag shall be provided for the craft's ancillary equipment.

Closure shall be by tie-straps of adequate strength for the application. Carrying handles shall be sewn to the bag of size and strength sufficient to support the weight of the bag and enclosed equipment. The following items shall be provided in the craft equipment bag:

Quantity

a. Automatic inflation hose assembly with quick disconnect fittings and SCUBA cylinder fitting 1 each

b. Towing bridle 1

c. Inflation pump wlhose and inflation valve adapter end fitting 2

d. Onboard repair kit 1

e. Paddles 6

f. Hoisting sling 1

g. Floor panel assembly 1

h. Pressure gauge 1

1. Spare valve kit 1

3.6.9 Carrying bag. A carrying bag, constructed of the same coated fabric as selected for the inflation tubes, shall be provided for the craft. Closing of the bag shall be by tie-straps of adequate strength for the application. The bag shall have a minimum of six lifting handles (2 each side and 1 each end) installed of size and strength adequate to support the complete carrying bag package with the contained craft. The carrying bag shall be sized to contain the rolled-up craft with inflation cylinder, and inflation hoses but not including the equipment bag.

3.7 Marking.

I 3.7.1 Nameplate. The craft shall have a label patch attached to the top of the hull tube just forward of the transom attachment on the starboard side. The label shall contain the following information:

Combat Rubber Raiding Craft

Stock No. _

Bllilt for the United States Navy by (Contractor, city, state)

Date of Mfg., month, year

Contract No. _

Serial No. _

Operating Inflation Pressure: (TBD) mbar ((TBD) psi)

Bare Hull Weight: (to be determined from first craft)

Maximum Horsepower: _

Maximum Capacity:

3.7.2 Label plate. A corrosion-resistant steel die stamped label plate shall be installed on the inboard side of the transom below the floorboard cleat. The label plate shall contain the craft serial number and date of manufacturer.

3.7.3 Serial numbers. A 7-digit serial number shall be assigned to each craft by the Contractor (see 6.5.3). The craft shall have a unique, systematic serial number regardless of contracts or purchase orders. The serial number shall consist of two digits representing the fiscal year of the contract, a hyphen followed by a 4-digit sequential number starting with 0001 (i.e. 95-0001).

3.7.4 Carrying bag. The carrying bag shall have a similar molded patch affixed in a visible location. Serial No., operating inflation pressure, bare hull weight, maximum horsepower and maximum capacity are not required on carrying bag label.

3.8 Coated fabric. The coated fabric used in the construction of inflatable buoyancy chambers shall meet the requirements of this section and be tested in accordance with 4.8. PVC coated fabric shall not be used. The base fabric shall be inherently rot-proof and not unduly affected by sea water, oil or fungal attack. Water soluble materials shall not be used in the coating compollnd.

3.8.1 Coatings. The coating compound shall meet the performance requirements of table I.

TABLE I. Characteristics of coating compounds.

Property Requirements Test Method

Tensile strength (initial) 10 MPa (min) ASTMD412

Ultimate elongation 300% (min) ASTMD412

Tensile strength after immersion ASTMD471, in distilled water at 71 ± 1 °C for the following durations:

- 14 days

- 42 days

7 MPa of initial (min) 5 MPa of initial (min)

ASTMD412

Resistance to light after 500 hrs 8 MPa of initial ASTMD750* accelerated weathering at 10% elongation ** tensile strength (min) ASTMD412

After oven aging of 100°C for 94 hours

ASTMD573

- Tensile strength retained 8.5 MPa (min) ASTMD412

- Ultimate Elongation retained

After immersion in fuel A for

85% (min) ASTMD412

46 hours at 23 ± 1°C ASTMD471

- Tensile strength retained 5 MPa (min) ASTMD412

- Volume change 25% (max) ASTMD471

*Alternate corex D filters in place.

**Applicable to all exterior compounds. That is, compounds between the fabric and the outside of the craft.

I 3.8.2 Weight. The weight of the finished coated fabric shall be tested in accordance with Method 5041 of FED-STD-191.

3.8.3 Breaking strength. The breaking strength of the finished coated fabric shall be a minimum of 58 N/mm in warp and fill when tested in accordance with Method 5102 ofFED-STD 191.

3.8.4 Tearing strength. The tearing strength of the finished coated fabric shall be a minimum of 111 N in warp and fill when tested in accordance with ASTM D 2261.

3.8.5 Coating adhesion. The coating adhesion shall be determined by using a suitable air-cure adhesive to bond one face of the coated fabric to the other face. The minimum adhesion shall be

1.75 N/mm with the coating compound separating off the base fabric. Testing parameters shall be in accordance with Method 5970 of FED-STD-19l.

3.8.6 Weld strength of thermoplastic coated fabrics. If the craft is fabricated from thermoplas tic materials and uses welding technology for seams and attachments, a Weld Test shall be conducted as follows.

3.8.6.1 Weld test. Two samples of fabric 300 millimeters x 200 millimeters, cut with a short side parallel to the warp direction, shall be superimposed face to back for double coated fabrics, or coated face to coated face for single coated fabrics. They shall be HF welded with a tool to a 10 ±1 millimeters width and of convenient length. The test specimens, 25 millimeters wide, shall be Cllt transversely to the line of weld. The test samples shall be in accordance with Method 5970 of FED-STD-191. The maximum peel load shall be recorded. The minimllm peel load shall be 7 N/mm for the initial break.

3.8.7 Coating adhesion after exposure to water. Three test samples shall be made and tested per FED-STD-19l Test Method 5970 with the following modifications:

a. The adhesive system used for the samples shall be the same system used for produc tion parts.

b. Test specimens for coating adhesion shall be immersed in 3 percent sodium chloride water solution at 60 ±1 °C for 96 hOllrs ±1 hour.

c. The edges of the test specimens shall not be sealed.

d. The test specimens shall be removed from the warm water and immediately placed in water at room temperature.

e. Each determination shall be completed within three minutes of the time of removal from the water. Mininll1m adhesion results shall be 1.75 N/mm of width.

3.8.8 Porosity test. The coated fabric shall not have any bubbles in 5 minutes when tested as specified in 4.8.1.

3.8.9 Puncture resistance. The coated fabric shall have a puncture resistance of 360 N when tested in accordance with 4.8.2.

3.8.10 Fungus resistance. The coated fabric shall be tested as per MIL-STD-810, Method 508-4, except test specimen shall not be sterilized before being subjected to the fungus. The coated fabric shall maintain a minimum of 50 percent of original breaking strength.

3.8.11 Resistance to oil. The coated fabric shall be tested in accordance with method described in 4.8.3, with the following exceptions and expected results:

a. The test shall be carried out not less than 16 hours after curing.

b. Each coated face shall be tested during 22 hours at 20 ±1 ac.

c. The test specimen shall be folded over so that the surfaces are pressed together and there are no signs of residual tackiness.

d. With the test specimen opened out, a single pass of the finger over the exposed surface, shall not produce sn1earing.

3.8.12 Hydrolysis resistance. When tested by the methods described in 4.8.4 the following performance values shall be achieved.

a. Coating adhesion. Minimum adhesion shall be 1.23 N/mm.

b. Blocking resistance. See 3.8.14, separation in 5 seconds.

c. Weld strength. See 3.8.6, minimum peel load shall be 4.9 N/mm.

d. Folding test. No cracks, delamination or visual deterioration.

3.8.13 Resistance to low temperature. The coating shall be visually examined for signs of cracking or flaking when tested in accordance with method described in 4.8.5.

3.8.14 Resistance to blocking Cheat). The coated fabric shall separate in 5 seconds when tested in accordance with 4.8.6.

3.8.15 Resistance to accelerated weathering. The exterior side of the coated fabric and representative seam samples shall be exposed in an Atlas Weatherometer or equivalent per Method 5804 of FED-STD-191. Xenon Arc or Carbon Arc weatherometer may also be used. The cycle shall be 102 minutes of light and 18 minlltes of spray for 100 hours.

3.8.15.1 Coating. Coating shall not crack when the material is bent, more heavily coated side out, over a 3 millimeter diameter rod after exposure for 100 hours without "Corex D" filters. One side of the fabric only shall be tested which shall be the side facing the arc in the testing apparatus.

After weathering, the coated fabric and representative seam samples shall show a loss in initial breaking strength not exceeding 20 percent when tested per Method 5102 of FED-STD-191.

3.8.15.2 Resistance to blocking. Resistance to blocking (heat) shall be tested in accordance with 3.8.14.

3.8.15.3 Single coated fabrics. Single coated fabrics shall be subjected to a coating adhesion test per 3.8.5, after weatherometer and shall have a minimum of 70 percent of the coating adhesion.

3.8.16 Abrasion resistance. The exterior side of the inflatable fabric shall withstand a minimum of 25,,000 cycles of chafing without exposure of the fabric substrate when the fabric is coated on one side only. When the fabric is coated on both sides, and the inside coating is at least e:qll~l tn nr gre:~ter th~1l the: exte:rinr cn~tille, the: e:xterinr side sh~l1 withstancl a 1l1ini1l1U1l1 nf 15,000 cycles without exposure of the fabric substrate. Method 5306 of ~'El)-S'1'l)-l~ 1 using a CS-17 wheel with 500 gram weights shall be used in testing the material.

J.R.1? L~nw ten1!"">erature crease resistance. The coated fabric shall not crack.. peel.. or delamInate atter unfoldIng when tested in accordance with 4.8.7.

1_R_l R Seiilll te,t~_ The 110ildille tneether nf ~IlY twn nl- n1nl-e pieces nf cnated fal--,rlc (such as lap joints .. butt joints.. and closures .. chafing or reinforcing patches .. coated fabric flanges of valves" etc.) shall be considered as seams and shall be subiected to all seam tests specified in table II and tested in accordance with 4.8.8, except ellafing patelles whicll will unly be tested fur {-leeL A{-lplica hIe test procedures are specified in table II and 4.8.8. The average breaking strength of five specimens for each type of seam for each test shall be compared to table II for conformance.

1_R_ 1q Oefld ln~d she~l- resist~llce:_ The: de:~d ln~d she~l- I-esistance nf the sean1S shall he tested in accordance with 4.H.9. Atter 24 hours examine each specimen while still under load for signs of slippage or separation as stated in table II. Three specimens shall be tested for each seam type in accurdance with 4_8_9_ lR

TABLE II. Characteristics of Seams

Property Requirements Test Method

Breaking strength (initial)

Breaking strength after immersion in distilled water at 71 ± 1°C for the following durations:

53 N/mm (min) ASTM D751 * and as specified herein

ASTM D751,

ASTM D471 and as specified herein

- 14 days 49N/mm

- 42 days 25 N/mm

Dead load shear resistance under 23 +1/4 kg stress at 93°C for 24 hOllrs

2.5 mm slippage (max) as specified herein

Peel adhesion (initial)

Peel adhesion after immersion in distilled water at 71 ± 1°C for the following durations:

3.5 N/mm (min) ASTM D413

machine method and as specified herein

ASTM D413

machine method;

ASTMD471

and as specified herein

- 14 days 1.75 N/mm

- 42 days 1.40 N/mm

*Except that the specimens shall be 50.8 mm in width.

3.9 Performance. Performance requirements, unless otherwise noted, are based on the craft inflated to the designed working pressure and equipped with rigid floor panels and twin 35 hp IMARS pumpjet engines.

3.9.1 Inflation. The craft, equipped with the roll-up flooring system, shall be capable of being inflated by the auton1atic inflation system using the 100 cubic foot SCUBA air cylinder. At an ambient temperature of -23°C the craft shall be capable of being inflated to the designed working pressure in not more than 4 minutes.

3.9.2 Overload pressllre. The inflatable compartments shall be capable of withstanding an overload pressure equal to at least three (3) times the working pressure.

3.9.3 Operating conclitions. The craft shall be capable of operating in a Sea State 3 without objectionable hogging or sagging or other deflections or relative motion of inflatable or rigid hull component.

3.9.4 Soft/Hard duck deployments. The craft shall be capable of soft/hard duck deployments with 360 kg of eqllipmerlt stored in the craft as defined in 3.4.16.

3.9.5 Speed. The craft, configured for operation with twin 35 horsepower IMARS pumpjet engines, at its minimum capacity of 1230 kg (includes engines, fuel, and payload), shall be capable of obtaining a minimum speed of 16 knots in calm water.

3.9.6 Beaching. The craft operating at minimum load capacity shall be capable of transitting in and out of a surf zone consisting of spilling waves with significant breaker heights up to 6 feet and periods greater than 12 seconds. The craft shall show no signs of deformation of craft or components which requires corrective action to continue the mission, separation of seams or joints, tearing of fabric, failure of craft fittings, or damage to equipment stowages.

I 3.9.7 Level flotatior~. The craft, with anyone of the hull chamber deflated, shall be capable of maintaining a level flotation in calm water.

3.9.8 Handling. The craft shall exhibit acceptable handling and maneuvering characteristics as defined in 4.9.4.

3.10 Training and rnlaintenance instructions. The Contractor shall provide training material and maintenance instructions in English, to enable the Government to prepare technical manuals.

3.11 Service.

3.11.1 Dllrability. l~he craft shall have a minimum 3 year service life and a 5 year storage life.

It is desirable that the craft shall have a service life of 5 years following 10 years of storage.

3.11.2 Service manual. The manufacturer of the inflatable craft shall prepare service manuals which shall include instruction for opening, inspecting, testing, repairing and repacking for the approved craft.

3.12 Optional equipment.

3.12.1 Roll-Up flooring system. A roll-up flooring system shall be provided as an option.

Segments shall be retained to prevent movement and slippage in a sleeved assembly constructed of coated fabric suitable for other non-inflatable application in these specifications. Ends of slatted segments shall be protected to prevent chafing against the craft. The roll-up floor assembly shall be attached to the craft by means of a suitable securing method at the thrustboard and at the transom. A sheath shall be installed at the stem on the roll-up flooring system for storage of the inflation cylinder. This sheath shall be made of materials that will fold with the craft, and withstand the rugged handling under tactical conditions.

3.12.2 Inflation cylinder. A one hundred (100) cubic foot SCUBA air cylinder with J-valve shall be provided as an option. The compressed gas inflation within the craft shall meet the requirements of Subpart 147.04-1, Code of Federal Regulations, Title 46, Part 147.

3.12.3 Boat safety kit bag. A waterproof/submersible bag with a nominal interior volume of

0.05 m3 shall be provided as an option. The bag shall be designed for a capacity of 22.6 kg and sized to fit into the bow area of the craft. To provide underwater cache capability the bag shall be fitted with an oral inflator/deflator valve for pressurizing up to 40 mbars. The bag shall be fitted with carrying handles and adjustable straps which can be used for backpack configuration.

4.0 VERIFICATIO~~~.

4.1 Inspection Prov.isions

4.1.1 Responsibilit)~ for inspection. Unless otherwise specified in the contract or purchase order, the Contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the Contractor may use his own facilities or any conlmerciallaboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed require ments.

4.1.2 Classification ~of inspections. The inspection requirements specified herein are classified as follows:

a. First article inspection (see 4.2)

b. Qualification inspection (see 4.3)

c. Conformance inspection (see 4.4)

d. Material inspection (see 4.6)

4.1.3 Inspection sanlllk. The following samples are required for conducting first article and/or qualification inspections:

a. One (1) craft complete with equipment and storage containers.

b. Four (4) 'lards of all coated cloth used in the construction of the craft and confor mance documentation. .

c. A 12-incl:l by 24-inch sample of each type of seam used in the construction of the craft. The sample shall be prepared in the same manner as the craft and the seam shall be centered in the 12-inch width of t11e sample

d. One (1) roll-up flooring system

e. One (1) inflation cylinder

f. One (1) boat safety kit bag

4.2 First article inspection. The craft selected as a first article sample shall be tested for all characteristics which determine functionality, workmanship and design. First article inspection shall consist of the follo~lving tests and examinations (see 6.3)

Test Test Method

a. Examinat ion 4.5

b. Material Inspection 4.6

c. Craft Tes ts 4.7

d. Material 'fests 4.8

e. Performance Tests 4.9

4.3 Qualification. C1~ualification inspection shall consist of the following tests and examina tions (see 6.4).

Test Test Method

a. Examination 4.5 b . Material Inspection 4.6

c. Craft Te5.ts 4.7

d. Material 'rests 4.8

e. Perform2.nce Tests 4.9

4.4 Conformance in;~pection. Each craft shall be inspected for all characteristics which determine whether or not the unit will perform its primary function and which depend upon workmanship rather thaIl design factors. Inspection shall consist of the following:

Test Test Method

a. Examina':.ion 4.5

b. Craft Te~;ts 4.7*

c. Seam Te·;t 4.8.8

*With the exception that on patch tests (see 4.7.9-12), only one patch of each type shall be tested per craft.

4.5 Examination. Each completed craft shall be carefully examined to determine conformance with the reqllirements of this specification and for such additional examination as may be considered necessary to ensure suitability for the purpose intended. As a minimum, examination shall check for defects as specified in table III and table IV and review of repair record(s) as part of examination process. No craft will be accepted by the Government until all defects are corrected.

4.5.1 Definitions of defects.

4.5.1.1 Critical defE:cts. The critical category defects are those which will cause the craft, carrying bag, or equipm:~nt bag to be rejected by the Government and cannot be resubmitted for acceptance.

4.5.1.2 Major defec.ts. The major category defects are those which may be repaired by the Contractor. These defecl:s can only be corrected by removing the entire section or component from the craft and replacing the section or component and resubmitting the craft for acceptance.

4.5.1.3 Minor defec !:s. The minor category defects are those which can be easily repaired or replaced and resubmitted for acceptance.

4.6 Material inspectilon.

4.6.1 Quality assurance. The contractor shall have a quality assurance program which incorporates as a minimum these inspection criteria and provides instruction for proper handling of defective materials.