Attachment 1 DAVIT SPEC.pdf

REVISION No. 0 . CHANGE NO. 0 .

DUAL POINT DAVIT SYSTEM

FOR 418’ WMSL

P-583-0628

ORIGINATED BY: BRIAN BEVERLY (Alion) DATE 03/16/12

ORIGINATOR’S COMMAND SFLC

DEPARTMENT / DIVISION AUX

INTERNAL REVIEWER Mark Tilyou DATE 03/16/12

PRODUCT LINE APPROVAL Tim Robinson DATE 03/19/12

USCG-SFLC HSCG40-12-R-30010

Jan 31, 2012 Attachment 1

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

SFLC-ESD-NAME-AUX-P-583-0628

TABLE OF CONTENTS

1.0 SCOPE

2.0 APPLICABLE DOCUMENTS

3.0 REQUIREMENTS FOR DUAL POINT DAVITS

4.0 QUALITY ASSURANCE and TESTING

5.0 PRESERVATION, MARKING AND PACKING

6.0 NOTES

FIGURES

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

1. SCOPE

1.1 Purpose - This specification sets forth the minimum requirements for purchase of dual point davit equipment for the US Coast Guard to install on the 418’ Maritime Security Cutter (WMSL). This davit is to replace an existing single point davit on up to eight cutters of this class.

1.2 Classification - The dual point davit for the 418’ WMSL cutter class will be used to launch and recover the Coast Guard’s standard Over the Horizon Cutter Boat (CB-OTH) MK III as well as other boats of similar configuration that may be assigned in the future. The davit shall be equipped with an adjustable integrated cradle arrangement allowing various boats to be carried. The davit shall be rated for a Safe Working Load of at least 11,000 pounds.

1.3 Background

The 418’ WMSL class cutters have a maximum beam beltline. Above this line the structure tapers inward. The davit will be installed on the starboard side a minimum of 7 feet above an open working 01 deck that must remain accessible and active. Supporting structure will be fabricated by the installing activity. The boat and davit shall stow inboard of the profile of the deckhouse (not exceeding 24 feet off the centerline). See Figure 1. The davit must move the boat 16 feet to starboard to launch clear of the maximum beam. Under a 20 degree adverse list to port the boat may briefly contact the hull.

The 418’ WMSL class cutters do not have an optimum position to handle a sea painter for control of the cutter boat. The flair and tumblehome preclude using the hull as an inboard stabilizer during launch and retrieval. The davit system shall include a sea painter boat boom to provide a positive towing position.

The currently assigned boat has a dual lift point spacing of 19 feet 6 inches. This boat is subject to replacement. The davit system must be adaptable to handle boats with other lift spacing when new or different boats are assigned. The boat shall stow bow forward.

See figures attached for general layout guidance.

2. APPLICABLE DOCUMENTS

2.1 Document Availability

To obtain the referenced documents see section 6.1.

2.2 Government Documents

The following documents form a part of this specification to the extent specified herein.

In the event of a conflict between the reference documents and the contents of this specification, the contents of this specification shall take precedence. The Contractor is

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

required to notify the Contracting Officer in writing for a resolution if an ambiguity or conflict is found in these specifications.

COAST GUARD DOCUMENTS

COMDTINST M9085.1C, Naval Engineering Computer Aided Design Standards, 11/11

COMDTINST M10360.3C, Coatings and Color Manual, 2005

SFLC Standard Specification 0740, Welding and Allied Processes

SFLC-D-000-0100 G, Bar Coding for USCG ELC Material, 3/12.

ELC-D-083-0351, Data for Provisioning, 1/00.

SFLC D-084-0481, Equipment Unit Preservation, Packaging and Marking Standard Requirements for USCG ELC Auxiliary Machinery Branch, 3/12

ELC D-085-0482, Drawings for USCG ELC Auxiliary Machinery Branch, 4/06

ELC D-086-0483, Technical Publications for USCG ELC Auxiliary Machinery Branch, 4/06

USCG Drawing 750-WMSL-801-20, Rev -, Booklet of General Plans, 1/08

USCG Drawing 750-WMSL-583-001, Rev B, Small Boat Handling Arrangements, 11/03

USCG Drawing 750-WMSL-583-002, Rev B, Small Boat Stbd, Hdlg Sys, Arr & Details, 9/08

USCG Drawing FL 2605-040, Rev -, Universal Boat Cradle, 2/12

MILITARY SPECIFICATIONS

MIL-STD-419E – Cleaning and Protecting Piping, Tubing, and Fittings for Hydraulic Power Transmission Equipment, 2010.

MIL-STD-1310H, Shipboard Bonding, Grounding and Other Techniques for Electromagnetic Compatibility and Safety, 2009.

MIL-STD-1399C Section 300B, Interface Standard for Shipboard Systems, Electric Power, Alternating Current, 2008.

DOD-STD-1399C Section 301A, Interface Standard for Shipboard Systems Ship Motion and Attitude, 07/21/86

MIL-PRF-17672D, Specification for Hydraulic Fluid, Petroleum, inhibited, Amend. 3, 5/31/95.

MIL-PRF-18458C – Grease, Wire Rope, Type II, 2007

MIL-C-24643C Amend 1 – Cables and Cords, Electric, Low Smoke, for Shipboard Use, General Specification for, 2011

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

MIL-V-24695B - Valve, Hose Assembly and Adapter, Vent and Test, Hydraulic Service, General Specification for, 2011

OTHER GOVERNMENT DOCUMENTS

Code of Federal Regulations (CFR 46), U.S. Coast Guard, Subchapters F and J

FED-STD-595B Colors Used In Government Procurement, 1/94

INTERNATIONAL LIFE-SAVING APPLIANCE CODE, International Maritime Organization Safety of Life at Sea (SOLAS) Publication IMO-982E, Chapter VI, Launching and embarkation appliances, 1997

2.3 Commercial Documents

AMERICAN GEAR MANUFACTURING ASSOCIATION (AGMA)

AGMA 6001-E08 - Design and Selection of Components for Enclosed Gear Drives.

AGMA 6010-F97-Standard for Spur, Helical, Herringbone and Bevel Enclosed Drives

AGMA 6123-B06- Design Manual for Enclosed Epicyclic Gear Drives

AGMA 9005-E02 -Industrial Gear Lubrication

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM F1166-07 Standard Practice for Human Engineering Design for Marine Systems, Equipment and Facilities.

ASTM D3951-10 Standard for Commercial Packaging

ASTM D4174-89, Standard Practice for Cleaning, Flushing, and Purification of Petroleum Fluid Hydraulic Systems, 2005

AMERICAN PETROLEUM INSTITUTE (API)

API-9A Specification for Wire Rope, 2011

INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS (IEEE)

IEEE Standard 45, Recommended Practice and Electrical Installation on Shipboard, 2002

INTERNATIONAL ELECTROTECHNICAL COMMISSION

IEC 61131-3 (2003) Programmable Controllers - Language

INTERNATIONAL MARITIME ORGANIZATION (IMO)

IMO International Life Saving Appliance (LSA) Code (2003)

INTERNATIONAL STANDARDS ORGANIZATION (ISO)

ISO 4406, Hydraulic Fluid Power-Fluids-Method for Coding the Level of Contamination by Solid Particles, 1999

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

ISO 7241 / 1 Series B, Quick Disconnect Couplings, 1987

ISO 7181 - Hydraulic Fluid Power cylinders, 160 bar, 2001

ISO 8136 - Hydraulic Fluid Power – Single Rod Cylinders, 1994

ISO 8137 – Hydraulic Fluid Power – Cylinders, 250 bar, 1997

ISO 16889 – Fluid Power, Filter, Multi-pass Method for Evaluation, 2008

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA MG1, Motors and Generators, 2011.

NEMA Standard 250– Enclosures for Electrical Equipment, 2008

NEMA Standard ICS-1– Industrial Control and Systems (series), 2010

NATIONAL FLUID POWER ASSOCIATION (NFPA)

NFPA T-3.9.22 R1 – Fluid Power, Pressure Ratings for Pumps and Motors, 2009

SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) INTERNATIONAL,

SAE H1086, Metals and Alloys in the Unified Numbering System, 2008

SAE-J1780, Hydraulic System Diagrams and Associated Tables for Marine Vehicles, SAE-J1782, Noise Control in Fluid Power System of Marine Vehicles, 2006

SAE-J1942, Hose and Hose Assemblies for Marine Applications, 2009

SAE-J1942-1, Qualified Hoses for Marine Applications, 2010

SAE J2321, Ship Systems and Equipment – General Specification for Filter Elements, SAE J2333, Ship Systems and Equipment – Filter Selection Parameters, 2004

SAE J2270, Ship Systems and Equipment – Threaded Fasteners – Inspection Test and Installation, 2003

SAE J2280, Ship Systems and Equipment – Standard for Selection and Identification Requirements, 1996

SAE J2295, Ship Systems and Equipment – Fastener Parts Standard – Cap Screws, Hex Bolts and Hex Nuts, 2006.

AMERICAN BUREAU OF SHIPPING –

ABS Rules For Certification Of Cargo Containers, 1998.

American National Standard Institute (ANSI)

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

ANSI/NCSL Z540-1, Calibration Laboratories and Measuring and Test Equipment - General Requirements, 2002

British Defence Standard DEF STAN 61-12: 90/001, Cables, Special Purpose, Electrical (Digital Data Transmission)-Issue 2, 01/01/1988

British Standard (BS) BS 6883, Elastomer Insulated Cables for Fixed Wiring In Ships and On Mobile and Fixed Offshore Units - Requirements and Test Methods, 06/15/1999

British Standard (BS) EN12385, Steel Wire Ropes, Safety, 10/30/2002

Society of Naval Architects and Marine Engineers (SNAME) Reference for Pierson- Moskowitz Sea Spectrum

2.4 Specification Order of Preference –

In the event of a conflict between the text of this specification and the references cited herein, the specification shall take preference.

3. DUAL POINT DAVIT REQUIREMENTS

3.1. FUNCTIONAL REQUIREMENTS:

3.1.1. The davit shall function as the SOLAS Life Saving Appliance (LSA) “Rescue Boat” davit for emergency (man overboard) launch and retrieval operations. The davit shall be capable of launching the cutter boat with a 3 person crew in less than 03 minutes from stowage in the cradle, directly to the sea. This time period shall include release of gripes, crew loading at the cradle, davit start-up from “off”, and the lift / extend / and lower of the boat to the sea.

3.1.2. The davit shall be capable of being launched in an emergency without electric power, with stored energy and gravity. The davit shall be capable of recovering the boat using a combination of stored energy, manual recharge of stored energy, and manual cranking of the main lifting winch.

3.1.3. The davit shall support Search and Rescue (SAR), Law Enforcement (LE), and Flight Deck (FltDk) operations by pre-positioning the boat at the 01 deck “rail” (transfer station), suspending the boat for multiple hours at the 01 deck rail position (cribbed to the deck edge) without slippage, and then launching the boat with full rated load (11,000 lb) to the sea in a maximum of 02 minutes under Sea State 5 (SS5) conditions.

3.1.4. The davit shall support SAR, LE, Flight Deck and Rescue Boat operations by recovering the cutter boat fully loaded (11,000 lb), under SS5 conditions, and suspending and cribbing the boat at the 01 deck rail position for personnel transfer, and the subsequent re-launching of the boat to the water or transfer up to its cradle. The davit shall have a constant tension feature. During the recovery process, the boat crew shall recover and attach the sea painter, and the boat shall then be towed by the cutter directly under the extended

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

davit arms. The boat crew shall recover and attach the fore and aft davit arm hooks, and then be capable of riding in the water with CT engaged until ready for lift.

3.1.5. When recovering the boat with 3 man crew, the davit shall be capable of recovering the boat from the water directly to its cradle.

3.1.6. The davit shall routinely launch with the davit arms fully extended. The davit shall be capable of being manually operated with the davit arms at partial extension and the boat closer to the cutter.

3.1.7. The davit shall utilize a boat boom sea painter system, to launch and retrieve the boat away from the cutter.

3.2 ENVIRONMENTAL CONDITIONS

3.2.1 SHIP MOTION.

The davits and cradles shall be designed to restrain the cutter-boat under Sea State 8 (Pierce-Moskowitcz Scale) environmental conditions. The following survival acceleration interface data has been calculated for the stowed cutter-boat on a 418’ ft WMSL cutter and shall be applied to the design of the davit, in the stowed position:

Accel. Factor Magnitude Direction

Ax 0.50g Parallel to centerplane

Ay 1.21g Perpendicular to centerplane

Az 1.96g Perpendicular to baseplane

The davit shall be designed to launch and retrieve the cutter-boat under conditions up to and including the level of Sea State 5 environmental conditions. The following operational interface acceleration data has been calculated for the extended davit head on a 418’ ft WMSL cutter and shall be applied to the design of the davit.

Accel. Factor Magnitude Direction

Ax .12g Parallel to centerplane

Ay .33g Perpendicular to centerplane

Az 1.27g Perpendicular to baseplane

3.2.2 TEMPERATURE LIMITS.

The davit shall be designed to launch and retrieve the cutter-boat under temperature operating limits of –40 degrees F to +125 degrees F ambient air temperature plus solar gain. The latter results in an equivalent equipment surface temperature of 140 degrees F for weatherdeck equipment.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

Salt-water cooling systems shall be designed to operate with 28 to 95 degree F seawater.

3.2.3 LIST AND TRIM

The crane shall be designed to perform all functions at Safe Working Load (SWL) against a permanent list of 20 degrees and permanent trim of 5 degrees.

In a stowed condition the crane shall survive the cutter rolling 45 degrees single amplitude and pitching 10 degrees single amplitude, which may occur simultaneously.

3.3. TOP LEVEL DESIGN REQUIREMETNS

3.3.1. The davit shall meet SOLAS LSA requirements for a Rescue Boat davit, except as noted herein. The Coast Guard does not require coxswain control of the launch from within the boat.

3.3.2. The davit shall have a nominal Working Load Limit of not less than 11,000 lbs.

3.3.3. The cutter boats may have an eccentric weight loading condition of 60 % stern, 40 % bow; the davit shall be designed to accommodate this loading condition.

3.3.4. The davit shall be designed to operate in up to a 20 degree list to port or starboard. Adverse list shall be considered launching on the starboard side against a list to port.

3.3.5. Each of the davit arms and rigging shall be designed to accept the following loading condition: With the davit at a 20 degree list to starboard (outboard), a vertical load downward of not less than 8,382 lbs (11,000 x 0.6 x 1.27), a horizontal load aft of 792 lbs (11,000 x 0.6 x 0.12), and a horizontal load athwartship (outboard) of 2,178 lbs (11,000 x

0.6 x 0.33). These arm stresses shall be translated back into the davit structure. The davit structure shall also be subject to the same operational acceleration factors. Stress levels shall not exceed stress limits based on a design factor of 4.5 on the ultimate strength of material (SOLAS-LSA).

3.3.6. With the davit in a retracted position, and the boat resting on the cradle (not suspended from the davit), the davit shall survive application of Survival accelerations without exceed 70 percent of the yield strength of materials.

3.3.7. Each wire rope, falls, link and block element shall be designed to a load of not less than 8,382 lbs, with a design factor of 6 on the ultimate strength of materials.

3.3.8. The davit shall be designed for installation on the starboard side of the cutter, at least 7 feet above the 01 deck level, between frames 44 and 52, on ship foundations to be constructed. The davit shall not interfere with other cutter operations which must occur on the 01 deck, but shall utilize the 01 deck edge as a general personnel transfer area.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

3.3.9. Lift point spacing shall have a variable range from 19 feet to 24 feet, continuously variable or adjustable in increments not greater than 2 inches; one specific spacing shall be 19 ft 6 inches. Adjustment may be infrequently required when new cutter boats with different lift point spacing are assigned. Adjustment may require the use of a crane, but shall not require welding.

3.3.10. The davit shall be capable of supporting a boat up to 29 feet in length and 9.5 feet in width. Outline and interface drawings shall show the davit assembled to support the largest boat configuration. Installation drawings shall show the davit assembled with a lift spacing of 19 ft 6 inches.

3.3.11. Provision shall be made for adjustment of the wire rope reeving to adjust the balance of the boat and adjust for lifting point spacing changes, without replacing the wire.

3.3.12. EMERGENCY MANUAL CONTROL - Provision shall be made for the manual control of hydraulic control valves on the davit for emergency and maintenance use.

3.3.13 The bow boom / sea painter system shall support the cutter towing the 11,000 lb boat at not less than 7 knots speed under Sea State 5 operating conditions. The bow boom shall be manually deployable by one or two persons. At full extension the sea painter shall line up with fully extended davit arms, and at partial extension the sea painter shall line up with the boat dropping just clear of the hull. The bow boom system shall have structural stops, and shall have a means to secure the boom for sea in the fully extended, partial extended and retracted positions. The sea painter shall be made fast to a deck cleat to be installed with the boom.

3.3.14 The manufacturer shall provide a statement of fact from American Bureau of Shipping, or other member of the International Association of Classification Societies,, that the davit system design meets the requirements of SOLAS and the requirements herein; that the davit system components, fabrication and welding meet the requirements herein; and that the davit factory testing meets the SOLAS requirements and the requirements herein.

3.4. LAUNCH AND RETRIEVAL PROCESSES

3.4.1. Launch processes shall include the pre-process of deployment of the boat boom, deployment of the sea painter, attachment of the sea painter, and attachment of a lanyard from the sea painter to the forward davit hook. The launch process shall end with release of the davit hooks and release of the sea painter. Recovery processes shall include the pre-process of staging the boat boom and sea painter, attachment of the sea painter and towing of the boat, and then recover and attachment of the davit hooks. Recovery post-processes shall include the release of the bow painter, recovery of the bow painter, and stowage of the bow boom.

3.4.2. The davit controls shall provide a series of semi-automatic sequential steps for launch and retrieval. The davit operator shall remain in control of the processes at all times.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

3.4.2.1. The davit shall be capable of launching the boat from cradle to the sea.

Once the decision is made to launch, the davit shall lift the boat, extend to full extension, and lower the boat to the sea. The main winch shall transition control to the constant tension feature. The constant tension feature shall maintain tension in the lifting wire ropes and shall permit the boat to be towed by the sea painter.

3.4.2.2. The davit shall be capable of recovering the boat from sea to cradle. The constant tension feature shall maintain tension in the lifting wire ropes. Once the decision is made to recover the boat, constant tension control shall transition to the lifting winch, and the davit shall lift the boat to the davit heads, retract the davit arms, and stop. Lowering the boat to the cradle shall be manually controlled by the davit operator.

3.4.2.3. The davit shall be capable of pre-staging the boat in the at-the-rail position for personnel transfer. Once the decision is made to pre-stage the boat, the davit shall lift the boat, partially extend, lower the boat to the 01 deck rail, and retract to crib the boat at the rail.

3.4.2.4. The davit shall be capable of lowering the boat from the rail to the sea.

Once the decision is made to launch the boat, the davit shall fully extend, and lower the boat to the sea. The main winch shall transition control to the constant tension feature.

The constant tension feature shall maintain tension in the lifting wire ropes, and shall permit the boat to be towed by the sea painter.

3.4.2.5. The davit shall be capable of retrieving the boat from sea to the rail position. Once the decision is made to recover the boat, constant tension winch control shall transition to the lifting winch, and the davit shall lift the boat to the 01 deck level, retract the davit arms, and retract to crib the boat at the rail.

3.4.2.6. The davit shall be capable of transferring the boat from the rail position to the cradle. Once the decision is made to transfer the boat, the davit shall extend sufficient to uncrib the boat, lift the boat to the davit heads, retract the davit arms, and stop. Lowering the boat to the cradle shall be manually controlled by the davit operator.

3.4.3. Davit controls shall permit manual operation for launch, retrieval and maintenance. Controls shall provide for selection of the constant tension feature.

3.4.4. Davit controls shall permit launch of the boat, in an emergency, without electric power. This process shall be documented in the technical publication, and in a placard posted on the console.

3.4.5. Davit controls shall permit recovery of the boat, in an emergency, without electric power. Stored energy may be manually recharged with a portable hand pump via quick-disconnect valves. The main winch may require manual cranking. This process shall be documented in the technical publication, and in a placard posted on the console.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

3.5 Detail Design Requirements

3.5.1. LAYOUT: For shipping purposes, the davit shall be modular or a series of modular assemblies that bolt to ships foundations. One module may be the control console.

All machinery necessary for davit operation (hydraulic power unit, winches, motors, etc) shall fit within the confines of these assemblies. This “pallet” or group of assemblies shall fit within the deck space available in the current location of a single point davit. The locations of the davit arms, machinery and boat (with projections) shall fit within the confines of the deck. The control station shall be made such that it allows for installation in a suitable location forward of the cutter boat and with a view of the cutter boat being launched or recovered from the water.

The davit layout must permit a) the boat to be secured using bow and stern tie-down fittings to deck structural fittings (to be located and installed as part of the installation process), b) standing and kneeling personnel to access the bow and stern of the boat and to access the fore/aft and inboard sides of the davit for maintenance (ASTM F1166 clearances), and c) personnel to transit the boat platform level on the inboard side (ASTM F1166 clearances).

These issues will be addressed by the installing activity, but should not be precluded by the davit design. The layout design shall permit the boat in the cradle to be quickly accessed by a 3 man crew; full loading of the boat in the cradle is not required.

The davit arm positions of fully retracted and fully extended shall be defined by positive structural stops. Hydraulic cylinders shall not bottom in either position.

Davit arm position misalignment shall not exceed 1 inch at the end of travel. Davit arm alignment shall automatically self-reset.

3.5.2 CRADLE: The Contractor shall provide an adjustable cradle system to support the keel and rib structure of the assigned cutter boat. The davit shall be conceptually similar to USCG Fleet drawing FL 2605-040, and may have a dump feature. Keel blocks shall not be more than 5 inches in depth. The cradle shall be adjustable to support future boats.

3.5.3 HOISTING AND LOWERING: The davits shall feature constant tension winches to allow for independent falls operation during recovery and self-leveling of the boat during hoisting. The hoist shall have continuously variable line speeds from zero to at least 90 feet per minute in both directions at design hoisting load and rated sea states. The control station shall have hoist raise/lower controls and provision for the selection and cancellation of the constant tension mode. The winch control system shall minimize slack wire induced tension surges and damage to equipment.

3.5.4 HOOKS: The davit system shall be fitted with two SOLAS approved off-load release hook systems for handling RHI type boats. The individual falls shall each be fitted with a hook mechanism with wire rope/lanyard release. The hook shall be fitted with handles suitable for grasp of the hook with mittened hands in accordance with ASTM F1166. The release lanyard shall extend to a point 200 to 300 mm (8 to 12) inches below the level of the

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

actual hook and shall be terminated with a nylon (or equivalent) ball between 50 to 75 mm (2 to 3) inches in diameter and with a thimble and swaged wire clip. The top of the thimble and the wire clip shall be recessed into the nylon ball to minimize points of snag. Provision shall be made for an attachment of additional lanyards (rope) for tag lines. The hook shall be rated for not less than 8382 ponds SWL and shall be pull tested to 200% of design strength.

3.5.5 WIRE, PINS AND FASTENERS

3.5.5.1 Wire shall be of a single construction type and shall be pressure lubricated with DynaGard Blue, DynaGard E, or equivalent. Standard construction wire, if provided, shall meet the requirements of API-9A or BS EN 12385. No left-hand lay wire shall be provided.

Sufficient wire rope shall be provided to place the davit hooks 10 feet below the keel line of the cutter.

3.5.5.2 ANTI-TWO-BLOCK AND END-OF-WIRE FEATURES. The davit shall have a decoder based anti-two-block feature which shall prevent the hooks from being drawn into the davit head sheaves. The davit shall have an encoder based end-of-wire feature, which shall prevent the wire from being unintentionally spooled totally off the winch.

The features shall have an over-ride capability to spooling of the wire rope and reset of parameters. Specific instructions for the setting of these encoders shall be addressed in the technical publication.

Wireless sensor systems shall not be provided.

3.5.5.3 All bearing pins shall be of a corrosion resistant or equivalent material, and shall be fitted with grease distribution grooves and stainless steel zerk fittings.

All bolts used for mounting of the davit to the vessel shall be K-monel and shall be provided with the davit.

All non-load bearing fasteners, bolts, nuts and hardware shall be Grade 316L Stainless Steel.

All through bolts shall be of a length such that two threads are visible beyond the nut or threaded material.

3.5.6 EMERGENCY OPERATION - The davit system shall be capable of launching the cutter-boat, in the event of loss of external power, without recharging of stored energy. The davit system shall be capable of recovering the cutter-boat, in the event of loss of external power, through a combination of stored energy, manual recharging of stored energy and manual cranking. Accumulator systems shall be nitrogen charged type. A portable hydraulic

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

hand pump with quick disconnect fitting shall be provided for recharging. Provision shall be made for manual cranking of the primary lift winch.

3.5.7 ELECTRICAL

Electric motors and associated equipment shall meet the design, performance, application and installation requirements of IEEE-STD-45, 46 CFR, Subchapter J, and National Electric Manufacture's Association (NEMA) standards MG1 and ICS. Electric motor frames and cases shall be steel, and shall be coated with marine grade paint system meeting paragraph 3.6.

The davit system shall be designed to operate on 440 VAC, 3 phase, 60 Hertz, ungrounded ship service power. All electrical equipment shall be ungrounded. The davit system shall be ready for electrical connection to ship service power.

The Cutter's ship service distribution system maintains the system characteristics of Type 1 power as defined in MIL-STD-1399, Section 300A. This does not require installation of an isolation transformer nor inverter filter. The Davit system shall operate within the constraints specified by this standard.

Electrical junction boxes on the davit shall meet IP67 requirements, junction boxes on the motors shall be brass or bronze. Fasteners such as bolts, nuts and pins shall be 316 Grade stainless steel.

Equipment bonding and grounding shall be provided in accordance with MIL-STD- 1310G for type I (topside level) bond strap, using CRES 316 1/4 inch wire rope with lugs of CRES 316L. Bond straps terminating to equipment shall meet requirements of Fig A-2 and surface preparation/seal termination shall meet paragraphs A.5.2.3 and A.5.2.4

All motors shall be equipped with anti-condensation heaters, factory-sealed pre-lubricated bearings and shall be rated for continuous duty.

All motors shall have locked rotor currents as low as practicable to keep voltage fluctuations on the power distribution system to a minimum.

All motors shall be selected with characteristics that will meet the performance requirements of the driven equipment. Speed, torque and power characteristics of the motor shall be compatible with the operating range requirements of the driven equipment.

Motor control circuits shall operate on 120 volts or less and power for motor control circuits shall be obtained from transformers integral to the motor controllers.

Motor control circuits shall be designed so that any grounding in the external circuits will not start the motor or by-pass any shut down provisions.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

All power and control cables shall be installed from the bottom of the controllers.

Cable penetrations shall be waterproof.

Electrical cabling in the weather, outside of enclosures, shall be watertight and meet MIL-DTL-24643, or shall be installed in ABS approved flexible conduit for marine applications.

The davit winch system must offer reduced current during start up to a maximum 2.5 times the running current.

Each davit arm shall have two marine grade floodlight assemblies at the tip, one with white lens and one with blue lens, to illuminate the boat below for night operations.

Each of the floodlights shall produce a minimum average of 75 lux or 7 foot candles of light at a distance of 40 feet over a 40 degree cone. Light assemblies shall be gimbaled or otherwise made to direct downwards from any davit arm aspect and shall be made to be manually adjustable by the ship’s crew. The lights shall be operated from a power switch on the operator’s console to select Off, Blue light or White light.

The operators console shall be fitted with a pole mounted light fixture to illuminate the console for night operations. The spotlight shall be fitted with a blue lens, and shall produce a minimum of 150 lux or 14 foot candles on the console.

All controller panels shall be NEMA Standard 250 Type 4 Grade 316 stainless steel and shall be fitted with stainless steel latching devices and drain plug(s).

All indicator lights shall have the capability of dimming. One dimming control located on the operator’s console shall be provided to facilitate dimming all indicator lights.

3.5.8 HYDRAULIC SYSTEM REQUIREMENTS

The hydraulic system shall be self-contained. No external source of hydraulic fluid under pressure shall be required. Hydraulic system design operating pressures shall not exceed 25 Mpa (3600 psi). The system shall have a secondary reduced pressure level for periods of inactivity. The hydraulic system shall be unloaded when the pump starts.

The fluid shall be compatible with hydraulic fluid designation 2135 in accordance with MIL-PRF-17672D. The Coast Guard desires to achieve multi-year service life of hydraulic fluid. The manufacturer shall not provide a system design which requires instructions to change oil annually.

The hydraulic particulate contamination and water content limit levels shall be ISO 4406, level 17/15/12 and 0.05% by weight or better. The Contamination Limit Level shall be clearly identified on the system diagram and in the technical publication.

Hydraulic piping systems shall be cleaned to ISO 4406, level 16/14/11 or better.

Hydraulic power unit output shall be fitted with a hydraulic noise and shock suppressor.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

Hydraulic piping, tubing, and fittings shall be stainless steel with a design factor of 4.0.

Piping connections shall be welded, to the extent practical. Tubing bends are preferred to mechanical fittings. Equipment interfaces and take-down joints for maintenance purposes shall be fitted with flange type connections with O-ring seal or straight thread type connections with O-ring seal. National Pipe Connections or British Standard Pipe (BSPP) tapered threaded connections shall not be used. Piping shall be supported by isolation hangers.

Hydraulic hoses shall meet the requirements of SAE J1942, with the exception that BSP straight threading shall be permitted, and should not exceed 30 inches in length except as necessary to support the movement of equipment. Hoses exposed to weather shall be covered by independent sleeves. Hydraulic hose covers shall be designed for marine weatherdeck service, and shall be resistant to ultraviolet light degradation. Hose fittings shall be stainless steel and shall be permanently installed on the hose. Hydraulic hose connections shall have "O"-ring seals. Each installed hose shall have affixed a weather resistant tag engraved or embossed in ¼” high letters with the part number, “S/N DAV- HYD-XXX” (where XXX is a sequential number), "Tested 150% WP" and Test Date [DD/MM/YY]. The hose tag numbers shall relate to a deliverable hose log spread sheet which shall identify system design pressure, hose test pressure, hose length, hose model, and both end fitting OEM part numbers.

Cadmium shall not be used where it will be in contact with hydraulic oil.

Valves shall be accessible for maintenance and repair. Manifold and sub plate type valves are preferred for maintenance purposes. Locking devices shall be provided for locking adjustable valves at service adjustment and valves that are required to be locked in the open or closed position for normal operation. The use of wire ties or similar devices is not acceptable as locking devices. Manually adjustable valves shall have a calibration marking system to permit repeat setting.

The hydraulic control valves, solenoids and handles shall be protected from the weather by a stainless steel cover or access panel door.

The hydraulic system shall be fitted with shock-resistant type gages sufficient for normal operation of the system. Gages shall be stainless steel. As a minimum, pump discharge pressure and stored operating pressure shall be indicated locally on the equipment. Gages shall be installed with damping devices and root valves.

All quick-disconnect fittings shall be valved-type fittings meeting ISO 7241/1 Series B.

Hydraulic cylinders will have a measured drift tolerance or creep of ½ mm or smaller in 10 minutes during factory and commissioning testing. Resistance to drift shall be maintained when the boat is stowed for long periods of time at the ship’s side.

Hydraulic cylinders shall not bottom out in any position.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

The hydraulic system shall be fitted with diagnostic equipment to temporarily instrument major components for operational analysis and calibration. MIL-V-24695 or equivalent commercial marine test, vent and sampling valves (Schroeder MINI- CHEK™ Series 1215, or equal) shall be installed throughout on both sides of all major components such as pumps, motors, regulating valves and cylinders. The valves shall be designed to connect/disconnect with the fluid system under pressure. Sampling valves and/or fittings shall be stainless steel. The intent is to provide detailed diagnostic capability without shut-down of the systems.

Pumps – Hydraulic pumps shall be commercial marine continuous duty type which is of a shock resistant type. They shall have a rated static pressure of at least 1.7 times the system design pressure, and shall have a rated fatigue pressure of at least 1.35 times the system design pressure per NFPA T-3.9.22 R.1. Pump and motor porting shall terminate in bosses cast or machined in the case or cover. Porting shall be straight thread connections and, except for gage ports, shall have O-ring seal, or O-ring seal flange connections. Tapered thread bosses with adapters are not permitted. The hydraulic pump shall be sized for the highest single flow rate crane function (rotate, raise, winch or extend as applicable) at rated speed, or the two highest flow rate crane functions simultaneously at not less than 2/3 of their respective rated speeds, whichever is greater. A digital service hour meter shall be provided to record the service life of each hydraulic pump.

All Hydraulic cylinders shall meet applicable industry standards, have a design factor of 4:1 on ultimate strength, and have cartridge type seal systems.

Fluid filters used in the system shall be in accordance with SAE J1782-99. Filtration requirements and minimum standards shall be established using Beta ratings, and SAE or ISO standard multi-pass test methods. Fluid filters shall be able to be removed from the power pack without spilling or without requiring disassembly of other components.

Pressure, return line and suction strainers shall be provided.

Fluid reservoirs shall be stainless steel to minimize rust and contamination. Internal baffles shall be installed. Manual fill ports shall not be provided. Fluid reservoirs shall be fitted with stainless steel valved, quick-disconnect suction and discharge ports for fluid fill and for off-line kidney loop filtration of the reservoir contents, using a filter buggy. Fluid reservoirs shall be fitted with valved, desiccant filter type breather vents.

Under no-flow conditions, the vent shall prevent the passage of air, and minimize vented contamination. Reservoir shall be sized to provide not less than 1.5 minutes of pump operation at maximum flow rate. Reservoirs shall not spill fluid when the ship rolls 45 degrees.

The hydraulic system and reservoir shall be fitted with thermostatically adjustable heater devices to maintain the davit system in operational condition at all times while

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

the cutter is underway. Hydraulic oil shall be maintained at less than 140 degrees F under all conditions including multiple hours of no-flow service.

If an oil cooler is required, it shall be a titanium plate type sea water cooler.

The hydraulic system shall be provided with a stainless steel water guard structure over the power pack.

3.5.9 The equipment to be delivered under this contract shall be clearly marked at the subassembly level with nameplates. These plates are to be manufactured to best commercial practice of stainless steel, and contain (at a minimum) sub-assembly name, contract number, date of manufacture, serial number, design working load, brake test load (designated in para.

4.2.4.5) and the dynamic test load (designated in para. 4.2.4.6). In addition to the above requirements, an additional nameplate containing the Contractor’s name and address shall be permanently affixed to the main winch gearbox. Use of the contractor’s job order number and sequence number as the serial number is acceptable. The plates shall be permanently affixed to their respective sub-assemblies in a clearly visible position.

3.5.10 CONTROL CONSOLE:

3.5.10.1. A pedestal mounted control console shall be provided for the davit.

Controls in the weather shall be operable by personnel wearing cold weather mittens (see ASTM F1166). Touch screens shall not be provided for davit functional controls.

Functional and system on/off controls shall be switches, pushbuttons, joysticks or finger levers, as appropriate.

3.5.10.2. The console shall have at least the following functions:

3.5.10.2.1. Visual indicator (white) that power is available to the panel and the davit.

3.5.10.2.2. On/off control of the hydraulic power unit. Hydraulic pressure shall be digitally displayed.

3.5.10.2.3. Digital display of hydraulic pressure, and other important equipment parameters necessary for the safe operation of the davit.

3.5.10.2.4. On/off control of the HPU electric heater; visual indication (blue) when the heater is on.

3.5.10.2.5. On/off control of accessory functions, if provided.

3.5.10.2.6. On/off/color selection control of floodlights.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

3.5.10.2.7. Joystick variable speed / direction control of all winches.

Joystick handles for constant tension winches shall be distinctly different or shorter than the joystick handle for the primary winch.

3.5.10.2.8. Joystick variable speed / direction control of davit extension functions.

3.5.10.2.9. On/off selection control, and joystick tension adjustment for the constant tension feature.

3.5.10.2.10. Audible and visual alarms (amber) that hydraulic power unit or other davit maintenance is required. Alarms shall be consolidated. An audible alarm silencing feature shall silence the audible alarm. Visual alarm shall be solid until the problem is corrected.

3.5.10.2.11. Audible and visual alarms (red) of eminent hydraulic power unit or davit equipment failure. Alarms shall be consolidated. An audible alarm silencing feature shall silence the audible alarm. Visual alarm shall be solid until the problem is corrected.

3.5.10.2.12. Dimming controls for all panel lights.

3.5.10.2.13. Emergency Stop switch.

3.5.10.2.14. The console shall provide the capability to diagnose equipment component failures.

3.5.10.2.15. The console shall provide a space reservation (4 inch by 4 inch by 4 inch) for potential future installation of hand-set or telephone communication equipment within the console, for use by the operator.

3.5.10.2.16. The console shall be arranged so that it can be installed forward of the davit, looking aft, and looking left and down to the water. The console cabinet shall not require access on the left or outboard side.

3.5.10.3. Displays shall be visible during daylight and under night lighting conditions (blue). An anti-glare feature shall be provided to permit use during direct sunlight.

3.5.10.4. E-STOP SWITCHES: Mushroom type, waterproof, Emergency Stop switches shall be provided; one on the console, and two for installation on the deckhouse at the 01 and 02 levels for use by observers. The loose switches shall be provided with waterproof J boxes. Switch color shall be red. These switches shall be

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

protected from inadvertent use with a lift-to-access bezel. These switches shall be wired in series, and activation shall cause all power to be lifted from the davit. After use, power shall have to be manually restored.

3.5.10.5. Flat panel displays may be provided on the weatherdeck for display of information, and virtual controls may be provided for selection or adjustment of that data or for diagnostic analysis systems.

3.5.11 Welding shall be in accordance with SFLC Standard Specification 0740.

3.6 Resistance to Marine Environment

3.6.1 COATINGS AND COLOR - The crane system shall be coated per Commandant Instruction M10360.3C, Coatings And Color Manual, Appendix A, under 'Machinery, Deck' Option II that requires a Zinc Rich Primer, Epoxy MidCoat, and Polysiloxane topcoat (Note that due to a recent change in M10360.3C, App C, Para E. CG Approved Coatings/Materials, the International brand polysiloxane system using Interfine 979 is no longer permitted). The topcoat color shall be Spar, FED-STD-595B color # 10371.

All purchased, factory pre-painted components for installation on the weather deck, shall be recoated per M10360.3C above unless the original coating treatment is specifically accepted by the Contracting Officer in advance. Component factory grade enamel paint systems are not acceptable.

Wear surfaces such as winch drums shall be coated with a double coat of Inorganic Zinc primer as defined in M10360.3C, Appendix C.

All exposed metal surfaces shall be made of 316 Grade CRES or otherwise coated in a manner to prevent corrosion from a saltwater environment.

3.7 Integrated Logistics Support

3.7.1 The contractor shall provide the following logistical support and information for the crane. Revised documentation in response to the government’s initial review shall be deliverable prior to any subsequent crane deliveries. Modifications made to the equipment provided during the term of the contract must be accompanied by updates of all the following that relate to those changes.

All Integrated Logistics Support documents shall be submitted to the Coast Guard Contracting Officer. The documents shall be submitted in MICROSOFT OFFICE(tm) format as electronic files. One electronic copy of each submitted and revised document shall be submitted on CD-ROM.

3.7.2. Design and Interface Report

The Contractor shall submit a Design and Interface Report for review and comment by the Government. The intent of this document is to enable the government to provide the installing activity the technical information for the development of the installation design

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

and work specification and to ensure interface between new elements and other existing systems are correct, well in advance of the delivery of the first crane. In addition to documenting the marine crane system design, the report shall include a test plan to meet 4.7 testing requirements and interface documentation such as weights, interface dimensions and standards, centers of gravity and power requirements. The offeror should not delay submission in order to format it into a smooth document as is required for the Technical Publication; the emphasis on this is the early acquisition of raw technical data, manufacturer’s cutsheets, performance curves and similar information is acceptable. The report shall include copies of the following information:

Drawings – (See 3.7.7 Drawings) − Equipment Arrangement drawings.

− Equipment Assembly drawings.

− Structural Interface drawings − Hydraulic System drawings and diagrams.

− Electrical System drawings and diagrams.

Calculations − Hydraulic Load Calculations − Structural calculation and finite element analysis for davit frame, davit arms, supports and other structural elements.

Technical Information − Marine Hook − Winch Unit − HPU Pump − Electric Motor Data − Cylinders − Hoses − Filters − Heat Exchanger − Directional Control Valve − Valve Controllers − Motor Controller

Planned paint systems for Crane System components including manufacturers data sheets.

First Article and Factory Test Plan for all required structural, hydraulic and electrical tests including verification of pass-fail criteria for each test.

3.7.3. Data for Provisioning

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

The Contractor shall provide Data for Provisioning for the crane components in accordance with USCG Specification ELC-D-083-0351 for review and comment.

Exceptions to this specification are that the list required in 3.7.4.1 (identified below as OBRP) shall be for a period of two year’s support vice one and that the delivery schedule shall be per this contract. This shall include end items as installed as well as the individual parts of each end item, Original Equipment Manufacturer (OEM) part numbers, OEM’s name and address, quantity used in each piece of equipment, and keying to any provided drawings. The price listing shall identify prices during the initial and all option years of the contract.

3.7.4. Recommended Spare Parts

3.7.4.1. On Board Repair Parts (OBRP) - The Contractor shall identify the manufacturer's recommended spare parts list for On-Board Repair Parts within the Technical Publication required in 3.7.5 and in the Data for Provisioning (including pricing) required in 3.7.3. Within 1 year of receipt of the OBRP recommendations, the Government may execute a contract amendment to procure the necessary parts for storage on the cutter. The Government will assign National Stock Numbers to those parts. These parts shall be individually packaged in accordance with SFLC-D-084- 0481 and bar coded in accordance with SFLC-D-000-0100. The parts shall be packaged together and shipped to the cutter or as directed as On-Board-Repair Parts.

The parts on the recommended OBRP list shall be sufficient to perform shipboard maintenance on the equipment for two years. The list shall include gaskets and seals as necessary to install components, and general disposable components. The list shall also include any normal wear / spare / repair parts which are critical to the operation of the system. Components required for overhaul of the equipment shall not be included on this list.

3.7.4.2. Depot Level Spare Parts

The Contractor shall identify the manufacturer's recommended list for Depot Level Spare Parts within the Technical Publication required in 3.7.5 and in the Data for Provisioning (including pricing) required in 3.7.3. The Depot Level spare parts list shall include all long lead time items or Coast Guard unique parts, assemblies and subassemblies that the Contractor believes are necessary to support fleet repairs for two years. Long lead time parts are defined as any part which will take longer than 45 days by the vendor to ship once they receive the order. Coast Guard unique parts are defined as any part, assembly or subassembly that is only installed on systems provided to the Coast Guard. The spare parts list shall be quantified into the number of spares needed per marine crane unit supplied.

DUAL POINT DAVIT SYSTEM FOR 418’ WMSL

All spare parts necessary for overhaul of a unit shall be identified in the Technical Publication.

The government will determine the routine spare parts to be supported (stocked) by the government, based on Data For Provisioning and ILS submissions.

Within 1 year of receipt of the Depot Level Spare Parts recommendations, the Government may execute a contract amendment to procure the necessary parts for depot or warehouse storage. The government will assign National Stock Numbers to those parts. These parts shall be individually packages in accordance with SFLC-D- 084-0481 and bar coded in accordance with SFLC-D-000-0100. The parts shall be packaged together and shipped as directed.

3.7.4.3. Initial Spare Parts

The Contractor shall provide an initial…