Specification - Auxiliary Systems (SWBS 500-599)

505-1.3 [A00040] Hose and hose assemblies shall meet the requirements of COMDTINST M9000.6E, Naval Engineering Manual, Chapter 505, including pressure testing and in-service tagging requirements. Hose, end fittings, and fire sleeves shall comply with SAE J1942 for fuel, lube oil, and hydraulic systems. Hoses in fuel, lube oil, and hydraulic systems shall have stainless steel crimp-on or re-useable end fittings. Hoses in the raw water, fresh water, condensate, and bilge systems shall use hose barbs with two stainless steel hose clamps with J1942 rated hose without the crimped end fittings. For raw water hose in sizes exceeding that covered by J1942, use Thermoid Bellowsflex 7910, or equal. Provide initial hose log in accordance with SOW 085-5.

505-1.4 [Orig] Piping or tubing not part of purchased components shall be stainless steel in accordance with section 078-2.1.2. Swagelok, Gyrolock or equal end fittings shall be used to connect stainless steel pipe or tubing. Piping fittings shall be stainless steel. PVC and CPVC piping and fittings shall not be used. The number of piping mechanical joints shall be minimized.

505-1.5 [Orig] Valves shall be suitable for intended application and shall be located where they are readily accessible for inspection, operation, maintenance and removal for repair. Valves for on/off applications shall be stainless steel flanged or threaded ball valves.

505-1.6 [Orig] Piping shall not leak at any point in any system under normal operation.

505-1.7 [Orig] Piping and hoses that carry flammable fluids shall have spray shields on mechanical joints.

505-2 [Orig] Machinery and Piping System Drainage

505-2.1 [Orig] Drain plugs shall be installed at low points in all piping systems or equipment that may entrap water, including components and parts of equipment. All drains shall be readily accessible for operation and maintenance.

505-2.2 [A00005] Discharges and drains, except engine exhausts, which penetrate the hull shall be configured as follows:

505-2.2.1 [A00005] Discharges and drains within five inches of the static full load waterline shall have a flanged through-hull penetrations connecting to a stainless steel ball valve and a stainless steel check valve. A double-clamped hose connection shall be used to connect the hose to the check valve hose barb fitting.

505-2.2.2 [A00005] Discharges and drains between five and twelve inches of the static full load waterline may be connected with an aluminum barbed pipe with double-clamped hose connections. Check valves for this discharge may be plastic check valves the same as or similar to the one (Bosworth Co. U-74 400") used on the 47MLB instead of the stainless steel requirement at Specification 505-1.5. The discharge hose connecting to the check valve shall include a curve to extend twelve inches above the static full load waterline.

505-2.2.3 [A00005] Discharges and drains greater than twelve inches above the static full load waterline may be connected with an aluminum barbed pipe with double-clamped hose connections. Check valves for this discharge may be plastic check valves the same as or similar to the one (Bosworth Co. U-74 400") used on the 47MLB instead of the stainless steel requirement at Specification 505-1.5.

505-2.2.4 [A00005] Only bilge pump discharges may discharge over the fender.

505-2.2.5 [A00005] Un-pressurized condensate drains may discharge directly into the side recovery wells.

505-2.3 [Orig] Plastic thru hull fittings shall not be used in any form.

510 [Orig] CLIMATE CONTROL

510-1 [Orig] General

510-1.1 [A00008] The RB-M shall have a seawater cooled marine grade Heating Ventilating and Air Conditioning (HVAC) system for the pilothouse, passenger and habitability spaces. The system may consist of more than one HVAC unit, but each unit must be identical. The system shall run off the boat’s power while underway and on shore power while pierside. The system shall be able to maintain the following temperatures throughout all environmental conditions listed in Section 070:

Table 510-1 HVAC Temperatures

Maximum Allowable Temperatures Cooling		Minimum Allowable Temperatures Heating
Dry Bulb	Wet Bulb	Dry Bulb
80 Degrees F	68 Degrees F	55 Degrees F

510-1.2 [Orig] HVAC system shall be designed in accordance with the Society of Naval Architects and Marine Engineers, Technical and Research Bulletin 4-16, "Calculations for Merchant Ship HVAC Design".

510-1.3 [Orig] Manned spaces shall be provided with a minimum of fresh air supply of 15 CFM per person.

510-1.4 [A00005] Air Conditioning (AC) systems utilizing seawater as coolant shall be fitted with a thru-hull ball valve that supplies seawater to a suction strainer that can be readily disassembled and cleaned. The suction strainer shall have a clear sediment bowl. AC seawater pump(s) shall be located where they are self-priming. Each AC systems’ seawater coolant supply shall be fitted with a ball valve so each system can be independently isolated and operated if the other system is isolated or removed. Each AC systems’ seawater discharge shall have an independent overboard drain. Seawater piping systems shall be arranged to simplify winterization.

510-1.5 [Orig] AC condensate shall drain or be pumped overboard through a water seal trap. If the air handler coils contains copper, the coils shall be coated to prevent contamination of the condensate.

510-1.6 [Orig] The thermostat control(s) shall be located within the space that the system services and allows the temperature to be controlled evenly throughout the space.

510-1.7 [Orig] Reject heat from the main diesel engines jacket water system may be used to heat manned spaces.

510-1.8 [A00005] Non-manned areas other than voids, tanks, lockers, lazarette space, and forepeak space shall be provided with a means to heat the areas to protect against freezing and condensation.

511 [Orig] DUCT CONSTRUCTION REQUIREMENTS

511-1.1 [Orig] Ducts shall be fabricated and arranged so they are not a hazard to the crew. Ducts shall have takedown joints for easy removal without damaging the duct or surrounding structure or fittings.

511-1.2 [A00008] Ducts and fittings shall be fabricated from aluminum in accordance with Section 078 with riveted, welded, flanged, snaplock, grooved lock, Pittsburg lock or other positive fastening seams. Seams and joints of the “s” sliplock type or requiring angles or bars for reinforcing shall not be used. Fittings shall be rigid and compatible with duct material.

511-1.3 [Orig] Ducting shall be protected from entry of foreign materials during construction and carefully inspected to ensure the absence of foreign material before closure.

511-1.4 [Orig] Use of sheet metal screws is not permissible in duct construction.

511-1.5 [Orig] Penetration of structural members shall be kept to a minimum. Watertight bulkheads shall not be penetrated by ducting. Openings for ducts through structure shall be oriented so that the longer dimension is parallel to the direction of greatest stress.

512 [Orig] VENTILATION

512-1 [Orig] General

512-1.1 [A00014] Ventilation system shall meet the requirements of SNAME Ship Technical Operation Bulletin 4-16, except that manned spaces shall be provided with a minimum of fresh air supply of 15 CFM per person. Fresh air supply calculations shall not include 3/16 mesh vent screens specified in section 512-1.10.

512-1.2 [Orig] Ventilation and HVAC system shall be designed to control humidity in the pilothouse and prevent windows from fogging when pilothouse door is closed with a four person crew under all operating and environmental conditions listed in Section 070.

512-1.3 [A00005] Non-manned areas other than voids, tanks and exterior lockers shall be provided with ventilation as described below:

512-1.3.1 [A00005] The lazarette shall be fitted with two, 2” inverted ball checks one port in the lazarette access trunk, one starboard fitted to the handrail and piped to the bilge to promote natural cross flow ventilation.

512-1.3.2 [A00005] The auxiliary machinery space shall be fitted for cross flow ventilation. An inverted ball check shall be fitted at the forward end of the compartment for natural ventilation supply. A fan shall take suction from the aft end of the compartment and discharge into the dry zone of the engineroom air inlet. The fan discharge shall be fitted with an inverted trap so that the integrity of bulkhead 7 is maintained in the damaged condition. Ball check and fan shall be sized to maintain temperature below 120 degrees F in the auxiliary machinery space under all ambient conditions.

512-1.3.3 [A00005] The forepeak shall be vented by two 1 ½” inverted ball check vents to provide natural cross flow ventilation. One vent shall be located on the port forward leg of the main deck handrail providing ventilation of the top of the forepeak. One vent shall be located on the starboard aft leg of the main deck handrail providing ventilation of the bottom of the forepeak. Inverted ball check vents shall avoid interference with the chocks, bitts and normal mooring arrangements.

512-1.4 [Orig] The spaces containing batteries or diesel stowage shall be ventilated in accordance with ABYC Projects H-32, and E-10.

512-1.5 [A00062] All spaces shall be designed to minimize water intrusion. Engine room intake vent trunks shall be outfitted with baffles forward of the demisters to limit the entry of water into the Engine Room.

512-1.6 [Orig] Blowers and ventilation ports shall be provided to aid in air circulation and crew comfort in the pilothouse and passengers compartment(s). Blowers shall be installed to allow for easy removal for maintenance.

512-1.7 [Orig] Vents in manned areas shall have the ability to completely and rapidly seal off those areas from outside air in case of an external chemical or biological contamination. The sealing of these vents must be able to be accomplished from inside the compartment.

512-1.8 [Orig] A separate exhaust fan of not less than 50 CFM shall be provided for the head area.

512-1.9 [Orig] Combustion air shall be drawn from the engine room. Inlets shall be fitted with demisters and water traps that are self draining. Engine room temperature and depression shall not violate engine room installed equipments’ OEM recommendations. All engine room(s) ventilation openings shall automatically close when the fire suppression system is activated.

512-1.10 [A00014] Vent louvers for manned areas shall have incorporated a 3/16 mesh stainless steel screen. The screen shall be installed to the exterior of the vent louver in a manner that attaches both the vent louver and the screen with the same fasteners. The vent assembly shall be installed so as not to have any sharp corners that can injure personnel, damage PPE and damage equipment when moving past the vent assembly.

521 [Orig] DEWATERING PUMP AND FIREMAIN STANDPIPE

521-1 [Orig] General

521-1.1 [A00006] The contractor shall provide a Coast Guard P-6 Dewatering Pump and components as follows:

Table 521-1 P-6 Dewatering Pump and Components

Item	Part Number / Supply Source
Coast Guard P-6 Pump Kit	NSN 4320 01 F99 0342
CG P-6 Pump: Darley Champion 2BE pump powered by a Honda GX-200 gasoline engine with a capacity of 250 gallons per minute at 12' suction lift	Included w/ Kit
15 ft Suction Hose w/ Strainer	Included w/ Kit
20 ft Discharge Hose	Included w/ Kit
Fuel Tank	Included w/ Kit
Spare Starter Rope	Included w/ Kit
Flashlight	Included w/ Kit
Instruction Card	Included w/ Kit
Aluminum Canister	NSN 8110 01 031 8863
Clamp Ring for Canister	NSN 5340 01 144 7003
Container Lid Gasket for Canister	NSN 5330 00 062 7420

521-1.2 [Orig] The P-6 and outfit shall be installed in the aluminum canister following the build-up instructions detailed in COMDTINST M10470.10E, Rescue and Survival Systems Manual.

521-2 [Orig] Dewatering Pump & Equipment Storage

521-2.1 [Orig] The RB-M shall have secure storage for the P-6 dewatering pump in a readily accessible location.

521-2.1.1 [Orig] Stowage of the P-6 pump shall be provided with a means to elevate the pump container above the deck to allow for drainage and to protect the deck from damage.

521-3 [Orig] Dewatering and Firefighting

521-3.1 [Orig] The RB-M shall have an engine room suction standpipe with strainer to allow for removal of water from each engine compartment bilge with the portable P-6 pump.

521-3.2 [Orig] The RB-M shall have a seawater suction standpipe for use with the P-6 pump. The standpipe shall be an independent pipe arranged to supply seawater to the pump. If the standpipe is within a machinery space, it shall be constructed of Sch 80 pipe. If the standpipe is arranged external of the craft, it may be constructed of Sch 40 pipe.

521-3.3 [Orig] For operations using the P-6 dewatering pump, the pump shall be removed from the pump can and secured to the deck adjacent to a standpipe. The securing device shall not be a tripping hazard or interfere with other operations on the aft deck when not in use.

521-3.4 [Orig] The connection points to the Coast Guard P6 Pump shall be via an aluminum 2-1/2” male cam and grove coupler, PT Coupling Co. Inc. part number Part A 25 or equal, with an aluminum 2 1/2" cap, PT Coupling Co. Inc. part number Part W 25 or equal, that is captured by a stainless steel wire or chain. Connection points shall be clearly labeled to indicate their use.

521-3.5 [Orig] Aluminum piping may be used for standpipes in lieu of hose.

529 [Orig] BILGE DRAINAGE AND PUMPS

529-1 [Orig] General

529-1.1 [A00006] Each compartment shall have a submersible DC electric bilge pump to pump out any water that may accumulate. Each bilge pump shall have a rated capacity of at least 2,000 gallons per hour as stated by the OEM. Each bilge pump shall be piped so that it pumps directly overboard. A check valve shall be provided in the overboard piping. Each bilge pump shall be located so that it takes suction from the lowest practical point of the compartment while either underway on plane or at the dock, while balancing other requirements including those at Specification 071 Access and 088-1 Human Systems Integration.

529-1.2 [Orig] The electric bilge pump control switches shall be watertight. All the switches shall be in one location within the pilothouse arranged for easy operation while minimizing the risk of accidental operation. The switches shall provide for a manual “ON” and “OFF” operation only.

529-1.3 [Orig] A bilge alarm system shall be provided in accordance with Section 436‑2.

529-1.4 [Orig] Pilothouse and passenger compartment decks shall have means to collect and drain water either to a bilge pump location or directly overboard through a check valve.

555 [Orig] FIRE EXTINGUISHING SYSTEM

555-1 [Orig] Portable Fire Extinguisher

555-1.1 [Orig] Portable fire extinguishers shall be installed in accordance with ABYC Project A-4, Fire Fighting Equipment, except that one B-II portable extinguisher may be substituted for two B-I portable extinguishers. Fire extinguishers shall be mounted at an interior location so that they are secure, but readily accessible. Fire extinguisher mounting brackets shall be USCG approved vehicle mounting brackets Ansul heavy duty or equivalent. All portable fire extinguishers shall have an inspection tag, (for CO2 - NSN 0116-LF-114-3100, for PKP – NSN 0116-LF-982-6100) installed on the device.

555-2 [Orig] Fire Suppression System

555-2.1 [Orig] The RB-M shall have one fixed fire suppression system for the protection of each engine room. The system shall meet the requirements of 46 CFR 181.410, except as noted herein. The system shall be installed as per the manufacturers instruction and NFPA 2001, Standard on Clean Agent Fire Extinguishing Systems 2004 Edition, Chapter 7, Marine Systems.

555-2.2 [Orig] The storage cylinders shall be capable of local actuation using a lever on the control head, and remote actuation from the pilothouse.

555-2.3 [Orig] A 30 second time delay shall be provided to prevent immediate discharge of gas. The fire suppression system shall not be capable of automatic discharge. The time delay shall have a manual release or bypass valve to override the time delay. The time delay shall be located outside the engine room and shall be accessible for operating the manual release.

555-3 [Orig] Smoke and Fire Alarm System

555-3.1 [Orig] A smoke and fire alarm system shall be provided in accordance with Section 436-3.

561 [Orig] STEERING SYSTEM

561-1 [Orig] General

561-1.1 [Orig] The steering system shall meet the requirements of Section 252 and ABYC Project P-24, Electronic Propulsion Control Systems.

565 [Orig] TRIM CONTROL

565-1 [Orig] General

565-1.1 [Orig] The RB-M shall have trim tabs or other means to control craft trim and heel while underway.

565-1.2 [Orig] Trim controls shall be provided at each helm location. Trim controls shall be located within easy reach of the helmsman in the seated position.

565-1.3 [Orig] Indicators for the position of the trim tabs or other trim control device shall be provided at each helm location.

581 [Orig] ANCHOR HANDLING SYSTEMS

581-1 [Orig] General

581-1.1 [A00056] The RB-M shall have an anchoring system comprised of the equipment shown in Table 581-1.

Table 581-1 Anchor System Components

Item	Quantity	Part Number / Supply Source
Anchor	1 Ea	Fortress Model FX 37
Bow Shackle, 3/8”, 316 Stainless Steel w/ Captive Screw Pin	1 Ea
Bow Shackle, 1/2”, 316 Stainless Steel w/ Non-Captive Screw Pin	1 Ea	Suncor S0116-0013 or equal
Anchor Chain, 3/8”, 316L Stainless Steel	9 Ft
½” Jaw Swivel, 316 Stainless Steel	1 Ea
Thimble, 7/8”, 316 Stainless Steel	1 Ea
Anchor Line, 2-3/4 inch circ. DBN	300 Ft Between Thimble and Free End (See 581-1.2)

581-1.2 [A00037] A stainless steel thimble shall be spliced into one end of the anchor line. A bow shackle shall run through the thimble and attach to the eye jaw swivel. The pin end of the eye jaw swivel shall be attached to the anchor chain. The opposite end of the anchor chain shall be attached to the bow shackle.

581-1.3 [A00014] The anchor shall be stowed in a bracket or locker that allows for secure, out of the way storage that is readily accessible on the foredeck. The anchor storage bracket shall allow the anchor chain to be attached to the anchor with a shackle when the anchor is secured in its stowage bracket, and the bracket shall prevent the anchor from shifting or vibrating. In addition, the anchor stowage bracket shall accommodate the assembled anchor with and without mud pads in either of the two fluke assembly configurations. Hand tools shall not be required to remove the anchor from its stowage bracket. The anchor line with chain and fittings shall be stowed on a mounted reel in a dry location that is readily accessible for use with the anchor.

581-1.4 [Orig] If the anchor line reel is in an interior space, a hawse pipe or similar device shall be provided to allow the deck access hatch to be secured when at anchor to maximize watertight integrity. The hawse pipe cover shall be provided with a device to capture the end of the anchor chain for ready access to the anchor line from the deck.

581-2 [Orig] Anchor Line Reel

581-2.1 [Orig] The anchor line reel shall have a locking mechanism that prevents it from free wheeling when not in use.

581-2.2 [Orig] The bitter end of the anchor line shall be securely fastened to the anchor line reel.

581-3 [Orig] Anchor Bitt / Cleat and Bullnose

581-3.1 [Orig] A forward bitt or cleat and an opening centerline chock (“bullnose”) suitable for anchoring or towing the RB-M by another vessel shall be installed on the RB-M.

581-3.2 [Orig] The bitt or cleat shall be sized to accommodate at least one round turn and three figure eights when securing the anchor line and installed in accordance with ABYC Project H-40, Anchor, Mooring, and Lifting.

581-3.3 [Orig] The bullnose shall be sized to accommodate the installed anchor line. The bullnose shall be capable of being opened and closed with one hand.

581-3.4 [Orig] The working surface of the anchor bitt/ cleat and the bullnose shall be polished.

582 [Orig] MOORING, TOWING AND TIE DOWN FITTINGS

582-1 [Orig] General

582-1.1 [Orig] All towing bitts, mooring bitts and chocks shall be free of sharp edges that might cause damage to mooring lines or personnel. The working surface of each bitt and chock shall be polished.

582-2 [Orig] Towing Fittings

582-2.1 [Orig] An aft towing bitt shall be provided on the centerline. The towing bitt shall be sized to accept one round turn and three figure eights of the towline.

582-2.2 [Orig] The RB-M towing bitt and fittings shall be designed with a factor of safety of 1.1 on the as welded yield strength of the fitting material under an applied load, equal to the breaking strength of the towing line supplied, as per Section 582-3, applied at the highest point of the fitting.

582-3 [Orig] Towline Reel

582-3.1 [A00014] A towline reel shall be provided and outfitted with 2-3/4-inch circumference, Double Braided Nylon Line with 12" eye splices at each end so the total length of the line is 600 feet to the center of each eye splice. The reel shall be installed in a location that is readily accessible to the towing bitt. The bitter end of the line shall be attached to the reel using a light line or other means to provide a weak link.

582-3.2 [Orig] The towline reel shall be provided with a removable crank handle and a locking mechanism that prevents it from free wheeling when not in use,

582-4 [Orig] Mooring and Securing Fittings

582-4.1 [Orig] The RB-M shall have a minimum of 4 sets of mooring bitts (or cleats) and chocks (as necessary), sized for the towline, around the perimeter of the RB-M to allow for mooring and alongside towing of a variety of craft types. The working surface of each bitt and chock shall be polished.

582-5 [Orig] Hoisting by Slings Under Hull (Travel – Lift)

582-5.1 [Orig] The RB-M shall be designed to allow lifting of the boat without damage by dual sling lifts, commonly referred to as a Travel Lift, where the slings pass under the hull.

582-5.2 [Orig] When using this type of lift the load on each sling shall not exceed 20,000 pounds in the hoisting condition.

582-5.3 [Orig] The use of dual sling lifts shall not require any protective blocking to be installed.

582-5.4 [Orig] Sling positions shall be permanently marked on the exterior of the boat in locations that can be easily seen from the main deck.

583 [Orig] LIFERAFT

583-1 [Orig] General

583-1.1 [Orig] The RB-M shall be provided with a 6 man Coast Guard Approved Coastal Service Liferaft with hydrostatic release. The liferaft shall be a ZODIAC part number DRS5006 and a restraint/release system shall be a ZODIAC part number DLA09098. Liferaft is packed in a low profile container and is ready for installation using the restraint/release system. The liferaft shall be securely stowed in a readily accessible location and fitted with a hydrostatic release that will allow the liferaft to float free from the boat if the boat is submerged. The stowage location shall also allow for the crew to manually deploy the liferaft. A self-righting boat, whether self-righting in the intact or damaged condition, is not required to carry a liferaft.