Part III - List of Documents, Exhibits, and Other Attachments
Section J – Attachment 2: SPECIFICATION
Section 1
TABLE OF CONTENTS
100-2 [Orig] Details of Construction
100-3 [Orig] Holes in Structure
100-6 [Orig] Construction Tolerances
110 [Orig] SHELL AND SUPPORTING STRUCTURE
114-2 [Orig] Removal and Replacement
120 [Orig] STRUCTURAL BULKHEADS
150 [Orig] PILOTHOUSE STRUCTURE
167 [Orig] DOORS, HATCHES, AND MANHOLES
180 [Orig] FOUNDATIONS AND BRACKETS
TABLE OF TABLES
Table 100-1 Plate Insert Corner Radii
SECTION 1: [Orig] STRUCTURE
100 [Orig] STRUCTURE
100-1.1 [Orig] The structural design shall be fully compliant with a well-recognized ABS, Det Norske Veritas or other design standard that is appropriate for the construction materials, hull form, speed and type of service of the RB-M. The Contractor shall prepare all calculations and analyses, including those supplementary to those defined by the selected standard(s), necessary to demonstrate the adequacy of the structural design as detailed in the SOW.
100-1.2 [Orig] The hull, main deck and pilothouse structure shall be aluminum.
100-2 [Orig] Details of Construction
100-2.1 [Orig] Construction shall comply with ABS Guide for Shipbuilding and Repair Quality Standard for Hull Structures during Construction or the International Association of Classification Societies Guidelines and Recommendation No. 47 Part A: Shipbuilding and Repair Quality Standard for New Construction, Rev 1, August 1999.
100-2.2 [Orig] Plate inserts shall have corner radii no less than shown in the following table:
Table 100-1 Plate Insert Corner Radii
|
Plate Insert Min. Dimension |
< 4 inches |
4-20 inches |
> 20 inches |
|
Plate Corner Radii |
|
2 inches |
|
100-2.3 [Orig] Where intercostal members are fitted, misalignment shall be limited to one-half the thickness of the web of the intercostal member. Where there are webs of different thickness, the thinner web shall be used to determine the allowable misalignment.
100-2.4 [Orig] Where possible, beam and column ends shall land on other structural framing members, reinforced as required to accept the loads. If not possible, the beam or column ends shall land on headers or brackets of suitable scantlings spanning to adjacent structure.
100-2.5 [Orig] Structure and fittings in way of propulsion and auxiliary machinery shall be arranged to provide clearance for disassembling parts and components without dismantling other machinery, structure or piping.
100-2.6 [Orig] Butts shall not cross seams.
100-2.7 [Orig] Doors, arches, and other openings shall be located such that a minimum number of stiffeners are cut and the efficiency of the bulkhead as a strength member is not impaired.
100-2.8 [Orig] Where a structural bulkhead, pilothouse side, or other substantial structure crosses a structural bulkhead, web frame, or deep girder on the opposite side of the plating, forming a knife-edge support, chocks, headers or other means shall be fitted to the opposite side member in the plane of the crossing structure so as to distribute the load.
100-2.9 [Orig] Stanchions, if provided, shall be aligned with the webs of the supporting structure in the longitudinal and transverse planes.
100-2.10 [Orig] Attachment of components to structural members shall not reduce the strength of the member unless the member has been specifically sized for such purpose. Brackets, margin plates, doubler plates, inserts, or special framing may be attached to the structure and used for mounting components. Drilling or tapping flanges of structural members shall not be done unless the members were sized with due consideration for such drilling or tapping.
100-3 [Orig] Holes in Structure
100-3.1 [A00029] Circular holes may be used either to reduce the weight of the structure or to provide access, provided the required strength and rigidity characteristics are met. Where the geometry of the structure precludes the use of a circular opening, other hole shapes may be used, however corners shall be rounded to radii of at least one-fourth of the clear dimension normal to the direction of principal stress, except for corner radii in way of cutouts for off the shelf ventilation. Radii in way of these off the shelf ventilation louver cutouts shall be maximized where possible, but no less than 3/16”. If the size or location of an opening impairs the strength of the structural member, the member shall be reinforced. All exposed plate edges shall be smooth to prevent personnel injury.
100-3.2 [Orig] Holes shall be spaced so that the distances between edges of adjacent holes will not be less than 1-1/4 times the diameter or the length of the holes. If adjacent holes are of different lengths, the minimum space between them shall be not less than 1-1/4 times the average of their two lengths.
100-4.1 [Orig] Limber holes shall be provided in longitudinal and transverse members for bilge drainage and to prevent the accumulation and retention of liquids and to permit their free flow to drains, scuppers, sumps and suction pipes. Limber holes in bottom longitudinals and keelsons shall be located to ensure draining of each bay formed by longitudinals and transverse frames. The number and size of limber holes may be reduced by including the area of scallops and cutouts for shell seams and butts where they are available for drainage.
100-4.2 [Orig] Limber holes shall be provided in areas where liquids may collect. The limber holes shall be welded all around to seal faying surfaces.
100-4.3 [Orig] Tank design and construction shall prevent the formation of air or gas pockets and provide clear passage for air to escape via vent pipes.
100-4.4 [Orig] Longitudinals, girders, and transverse structural members forming the boundary beneath the propulsion engines and reverse/reduction gears shall not be fitted with limber holes. These areas will then serve as a drip pan and will prevent contamination of the remainder of the engine space bilge in the event of engine leakage. In order to clean said areas, adequate lighting, access and ease of cleaning with a minimum of interferences will be required.
100-5.1 [Orig] Fairness shall be in accordance with NAVSEA 0900-LP-060-4010 Figure 12-8 and 12-9 and associated notes except that decks exposed to the weather; the external visible surfaces of the pilothouse, and miscellaneous small lockers; and the underwater surface of the hull shall be fair in accordance with half of the value in Figure 12-8 or 12-9. In addition to this fairness standard, additional requirements of either ABS Guide for Shipbuilding & Repair Quality Standards for Hull Structures During Construction (Fabrication & Fairness: Table 5.1, 5.2, 5.4, 5.8, 5.9, 5.10 & 5.11; Alignment: Table 5.12, 5.13 & 5.14; Repair: 5.23, 5.24 & 5.25) or IACS No. 47 Shipbuilding & Repair Quality Standard (Fabrication & Fairness: Table 6.1, 6.2, 6.4, 6.8, 6.9, 6.10 & 6.11; Alignment: Table 7.1, 7.2 & 7.3; Repair: 9.1, 9.2 & 9.3) shall be used.
100-5.1.1 [A00038] The table below provides the required fairness values derived from Specification 100-5.1 applied to the design of the RB-M.
|
Location |
Part Names |
Plate Thickness (in.) |
Stiffener spacing (in.) |
Permissible Unfairness (NAVSEA 4010) |
|
|
NAVSEA 0900-LP-060-4010 Table 12-9 (1971) |
|||||
|
Bottom shell |
AS01-001S/P |
0.250 |
<13 |
3/32 (0.09) |
|
|
Transom A |
AF00-001C, AF00-001S/P |
0.250 |
<13 |
3/32 (0.09) |
|
|
Transom B |
BF00-001C |
0.160 |
<13 |
3/16 (.19)* |
|
|
Side shell above lower chine |
AS03-001S/P, AS03-002S/P |
0.190 |
<13 |
3/32 (0.09) |
|
|
Side shell Fender strake |
BS01-001S/P, BS01-901S/P, BS01-902C |
0.160 |
<13 |
3/16 (.19)* |
|
|
Side shell gunwale |
BS02-001S/P, BS02-901C |
0.160 |
Plate width is <13 |
3/16 (.19)* |
|
|
Main deck (exterior) |
BD01-003S/P, BD01-901C |
0.160 |
<13 |
3/32 (0.09) |
|
|
Main deck (inside PH) |
BD01-003S/P, BD01-901C |
0.160 |
<13 |
3/16 (.19)* |
|
|
Main deck |
BD01-002S/P |
0.375 |
<13 |
3/32 (0.09) |
|
|
Pilothouse sides |
CS01-901S/P |
0.160 |
<13 |
3/32 (0.09) |
|
|
Lazarette Deck box sides |
EF00-901C |
0.125 |
<13 |
3/16 (.19)* |
|
|
Lazarette Deck box front |
EF02-001C |
0.190 |
<13 |
3/16 (.19)* |
|
|
* 1/2 Tolerance from Spec Section 100-5.1 does NOT apply |
|||||
|
NAVSEA 0900-LP-060-4010 Table 12-8 (1971) |
|||||
|
Pilothouse coach roof |
DS01-901S/P, DT01-901S/P, CT01-901S/P, CT01-901S |
0.160 |
<13 |
3/16 (.19)* |
|
|
Recovery Platform |
BT01-901C, BT01-902S/P |
0.160 |
<13 |
1/8 (.13)* |
|
|
Rescue Recess Well Deck |
AS04-002S/P |
0.160 |
<13 |
1/8(.13)* |
|
|
Bulkhead 2A Center |
AF02-001C |
0.190 |
8 11/16 |
1/4 (.25) |
|
|
Bulkhead 2A Outboard |
AF02-001S/P |
0.190 |
7 3/4 to 9 3/4 |
1/4 (.25) |
|
|
Bulkhead 2B |
BF02-001C |
0.160 |
12 |
3/8 (.375) |
|
|
Bulkhead 7A |
AF07-002C, AF07-001S/P |
0.160 |
8 3/4 to 11 3/16 |
1/4 (.25) |
|
|
Bulkhead 7B |
BF07-001C |
0.160 |
10 5/8 |
1/4 (.25) |
|
|
Bulkhead 10A |
AF10-002C |
0.160 |
4 11/16 - 11 3/8 |
1/4 (.25) |
|
|
Bulkhead 10B |
BF10-001C |
0.160 |
9 |
1/4 (.25) |
|
|
Bulkhead 14A |
AF14-002C |
0.160 |
10-14 |
1/4 (.25) to 3/8 (.375) |
|
|
Bulkhead 14B |
BF14-001C |
0.160 |
10.00 |
1/4 (.25) |
|
|
* 1/2 Tolerance from Spec Section 100-5.1 applies |
|||||
100-5.2 [Orig] Filling compound or flame straightening shall not be used to compensate for unfairness in the boat structure. Methods using other techniques for application of heat alone, such as laser fairing, may be considered, but the Government does not guarantee that it will accept any method proposed. Weld beads may be applied to the center of panels or alongside stiffeners to reduce unfairness, subject to the approval of the Government. All beads, or any visible markings from them left on the opposite side of the plate of such welds, shall be ground off visible surfaces. Beads, or any visible markings, need not be ground off surfaces that will be insulated or other surfaces not visible after construction, surfaces inside voids or other unmanned spaces. Weld beads used to fair surfaces shall not meet. Note that this means that “X”s and “O”s are not allowed, as the meeting of weld beads potentially produces cracking. “Pine needle” or other forms of beads that do not meet are acceptable. Weld beads used for fairing shall meet the requirements of Section 074-2.2.
100-5.3 [Orig] "Panting" or "oil-canning" is not permitted.
100-6 [Orig] Construction Tolerances
100-6.1 [Orig] Cumulative departure from the hull lines shall be held within the following limits:
100-6.1.1 [Orig] Plus or minus 1 inch overall length of the hull.
100-6.1.2 [Orig] Plus or minus ½ inch in overall beam.
100-6.1.3 [Orig] Plus or minus ½ inch in depth of the hull.
102-1 [Orig] General
102-1.1 [Orig] The hull, weather decks and pilothouse structure shall be Watertight Degree 1.
102-1.2 [Orig] Deck and bulkhead penetrations shall conform to the tightness of the deck or bulkhead on which they are installed.
102-1.3 [Orig] Consoles shall be Watertight Degree 3.
102-1.4 [Orig] Gunning material, caulking-type material, peening, paint etc. shall not be used to meet tightness requirements.
102-1.5 [Orig] Stuffing tubes, flanged joints, or cable transits shall be provided to maintain the required tightness of structure where penetrated by non-welded items such as cables, wiring or tubing.
102-1.6 [Orig] Stainless steel recessed threaded pipe plugs utilizing stainless steel threaded inserts shall be installed in the top and bottom of inaccessible voids to allow for air testing and drainage.
110 [Orig] SHELL AND SUPPORTING STRUCTURE
110-1.1 [Orig] The keel, keelsons, girders, propulsion engine/reduction gear foundations, bottom longitudinals, and side longitudinals shall be continuous through transverse structures. Collars or flat bar inserts shall be fitted around structure passing through watertight and oil-tight bulkheads. Abrupt changes in section shall be avoided.
110-1.2 [Orig] Thickness differences between connecting plates of more than 1/8 inch shall be tapered off 4 to 1.
110-1.3 [Orig] Watertight and oil-tight joints shall have continuous welding on both sides.
110-1.4 [Orig] The structural members within the hull bottom, or in other areas where water may collect, shall have double continuous welds. This shall include keel, keelsons, girders, propulsion engine, and reduction gear foundations to shell plating welds. Longitudinals, transverses and other main support structure below the main chine or spray rail, engine girders, and similar structure loaded by vibration or sea impact shall be continuously welded, except that flanges of longitudinals comprised of angles, tees or bulbs shall not be welded to frames.
110-1.5 [Orig] Adequate shear area shall be provided on all welds between longitudinals and their supporting structure. The webs of the bottom, side and deck longitudinals shall be connected to the transverse web frames to transfer the shear loads. Clips may be used on either one side or both sides of the web as required.
110-1.6 [Orig] Full penetration welds shall be provided for butts and seams of the keel, bottom shell, side shell, main deck, and transom. Welded joints in the keel, keelsons, girders, propulsion engine/reduction gear foundations, and bottom longitudinals shall be full penetration welds at the webs as well as the flanges.
110-1.7 [Orig] Butt joints in the longitudinals shall be at least 6 inches from transverse frames and 6 inches from plating butts.
110-1.8 [A00008] Interference of plating butts and seams with weld traces of structural members that attach to plating shall not be permitted. Butts shall be at least 3 inches, but no more than 12 inches from the molded lines of transverse structure. Seams shall be at least 3 inches from the molded lines of longitudinal structural members.
114-1.1 [Orig] The RB‑M shall be outfitted with a prominent, fixed fendering system that will protect the hull from collisions without damage during the boarding and alongside towing missions as described in Section 044. The fendering shall in no way damage, mar or otherwise affect the craft to be boarded.
114-1.2 [Orig] The fendering system shall extend around the complete perimeter of the boat except the transom. The fendering system shall not extend below the full load static waterline.
114-1.3 [Orig] Fendering systems shall be modular to allow for ease of replacement and replacement of only those sections that are damaged. The fendering sections shall be installed to keep each section from shifting out of position. The fendering shall be interchangeable so that custom fitting of spare fendering is not required.
114-1.4 [Orig] The fendering color shall be International Orange FED–STD 595B(1) Color Number 12197. An alternate fendering color may be approved by the Contracting Officer if International Orange is not available in the fendering material selected. Heavy duty rub strakes, non-skid or other fittings on the fendering do not need to be International Orange.
114-1.5 [A00024] The maximum allowable gap between any two (2) fender sections is .25 inches. The maximum unfairness or mismatch between any two (2) fender sections is .25 inches.
114-2 [Orig] Removal and Replacement
114-2.1 [Orig] The fendering shall be attached to the hull in such a manner that it can be removed for repair or replacement with non-powered hand tools while the boat is afloat. Adhesives and welding shall not be used to attach the fendering system to the hull.
114-3.1 [Orig] The fendering shall be constructed of durable materials that are highly resistant to puncture, tearing, and sunlight degradation.
114-3.2 [Orig] Materials used for fendering systems shall be suitable for the intended use without noticeable moisture absorption, deterioration of performance characteristics, or increase in weight over time.
120 [Orig] STRUCTURAL BULKHEADS
120-1.1 [Orig] Full penetration welds shall be provided for butts and seams of the bulkheads and tanks. Tee joints at boundary connections of bulkheads and tanks shall have continuous welding on both sides.
120-1.2 [Orig] All attachments of bulkhead stiffeners to plating, up to the level of the chine and for one-tenth of their length at the opposite end, shall be made by double continuous fillet welds. The nominal leg of the welds shall be 1/16 inch less than the thinner plate attached, but shall not be less than 1/8 inch.
120-1.3 [Orig] Where wiring trunks, pipe tunnels, or shaft tubes terminate in transverse watertight bulkheads, the ends of such trunks or tunnels shall be sealed watertight at each such bulkhead.
120-1.4 [Orig] Attachments to bulkheads for the purpose of supporting local loads shall not impair the strength or tightness of the bulkhead. Insert and margin plates, additional reinforcing, special framing, or stiffening shall be installed to distribute local stress. Attachments shall be made to the framing and not directly to the bulkhead plating.
123 [Orig] TANKS
123-1.1 [Orig] All boundaries of integral tanks shall be designed to the same pressure as the bottom of the boat.
123-1.2 [Orig] All structural members on tank boundaries and swash plates shall have continuity with structure bonding the tanks to minimize structural hard spots.
123-1.3 [Orig] Integral fuel tanks shall provide access for inspection and repair of all portions of the tank without removing any permanent structural component.
123-1.4 [Orig] Fuel tank fill and vent piping shall be sized, installed and located such that:
123-1.4.1 [Orig] Water contamination of the fuel during fueling is avoided.
123-1.4.2 [Orig] Spills will not enter the boat.
123-1.4.3 [Orig] No tripping hazard is created.
123-1.4.4 [Orig] Filling can easily be accomplished from the deck.
123-1.4.5 [Orig] Small fuel spills at the filler up to 12 ounces shall be contained to prevent fuel from escaping overboard and contaminating the water.
123-1.4.6 [Orig] Fuel fills and vents shall not be located adjacent to or where spills will drain onto electrical connections or other components that would be adversely affected by fuel or would present a hazardous condition if contaminated by fuel.
123-1.5 [Orig] The fuel system shall be pressure checked to at least 3 psi or at 1-1/2 times the maximum hydrostatic head to which the system will be subjected to in service, whichever is greater.
123-1.6 [Orig] Tanks, if non-integral, must be removable without the cutting of hull/deck structure.
123-1.7 [Orig] Non-integral tanks shall comply with 46 CFR 182.435 – 182.450 except that 46 CFR 182.440(d) shall be forbidden.
130-1.1 [Orig] The longitudinal girders and deck longitudinals shall be continuous through transverse structures. Collars or flat bar inserts shall be fitted around structure passing through watertight and oil-tight bulkheads.
130-1.2 [Orig] Decks shall be reinforced in way of equipment or components placing point loads on the structure, and at hatch corners, and any other interruptions of the continuous deck. All deck openings shall have well rounded corners and shall be reinforced with insert plates or coamings.
150 [Orig] PILOTHOUSE STRUCTURE
150-1.1 [Orig] The lower ends of vertical pilothouse stiffeners shall be either continuous with hull or deck framing or shall be provided with suitable reinforcement structure on the hull or deck in accordance with Section 100.
167 [Orig] DOORS, HATCHES, AND MANHOLES
167-1.1 [Orig] Doors into the pilothouse shall be Watertight Degree 2. Hatches and manholes shall be Watertight Degree 2.
167-1.2 [Orig] All watertight doors and hatches shall be quick acting. All doors and hatches shall be operable from both sides.
167-1.3 [A00059] Doors and hatches throughout the craft shall have bumpers or other devices installed to protect adjacent equipment and light structure. Doors and hatches throughout the craft shall have automatic hooks or locking mechanisms to retain hinged doors and hatches in the fully opened position. Locking mechanisms shall have a visual indicator that shows the hatch is locked open and shall allow for manual manipulation to lock open. Doors and hatches shall open far enough to have the inside opening mechanisms clear the hatch opening leaving the opening clear of obstructions and must open and lock at least 100 degrees from the horizontal from the hatch opening side.
167-1.4 [Orig] Primary hatches where routine or emergency access is required shall be hinged type, fast acting, with a built-in tee handle requiring no tools to open or close. Tools, if required for opening other hatches, shall be stored within easy reach of the hatch.
167-1.5 [Orig] Primary doors or hatches opening to manned spaces shall be provided with a viewing window.
167-1.6 [Orig] Doors opening to the exterior of the boat shall be provided with a window that will maximize the crew's ability to see out from within the interior.
167-1.7 [Orig] Water sheds shall be fitted over all doors and windows opening to the weather.
167-1.8 [Orig] Manholes shall be provided for access to all compartments, tanks, cofferdams, voids and pockets which are not provided with other means of access.
167-1.9 [Orig] Compartments with fire suppression systems shall be equipped with accesses that open outward to allow emergency egress.
167-1.10 [Orig] All hatches on the main deck or in a walking surface shall be of the flush type.
167-1.11 [Orig] Minimum clear opening dimensions of hatches shall be not less than 19 inches by 26 inches for an oval hatch, 24 inches by 24 inches for a square hatch or 24 inch diameter for a round hatch. All main deck hatches shall open as required to facilitate egress and ingress, to minimize interference with equipment or operations on deck, and to minimize the possibility of boarding waves to an open or partially closed hatch.
167-1.12 [Orig] Coamings and pockets that might trap water shall be provided with drainage to prevent water accumulation. Drains shall direct water overboard as close to the sheer as practical and do not need a check valve.
170-1.1 [Orig] A means shall be provided to fly a National Ensign and a U.S. Coast Guard Ensign (flags), one over the other. The ensigns shall not interfere with any electronics or lights.
170-1.2 [Orig] Fittings and foundations shall be constructed to prevent tearing of ensigns or rigging.
170-1.3 [Orig] Fittings and equipment shall be accessible for maintenance.
170-1.4 [Orig] Masts and arches shall be Watertight Degree 2 or provide means of free drainage.
170-1.5 [Orig] Masts and arches shall be unstayed. The mast shall not be capable of excitation from synchronous boat motions, propeller frequency and/or wind induced excitation.
170-1.6 [Orig] Masts and arches shall be hinged to comply with the navigational clearance requirements of Section 070-1. Locking mechanisms shall not require any tools to activate. It shall take no more than two crewmembers to raise and lower the masts or arches when the RB-M is underway at idle speeds in clam water.
180 [Orig] FOUNDATIONS AND BRACKETS
180-1.1 [Orig] Strength and rigidity of foundations shall be suitable to withstand all the design loads and distribute such loads into the structure.
180-1.2 [Orig] Foundations shall be designed to withstand fatigue throughout the service life of the craft.
180-1.3 [Orig] Foundations shall contain no pockets which can retain liquids, except the main engine and reverse/reduction gear foundations, which shall contain a catch area to prevent leakage of lubricating and fuel oil into the bilges.
180-1.4 [Orig] Foundations shall be arranged to provide sufficient clearance for servicing and disassembling parts such as circulating pumps, air coolers, pistons, stators, valves and rotors without dismantling other machinery, structure or piping.
180-1.5 [Orig] All foundations shall be designed and constructed so that positive and accurate alignment of equipment and components is maintained.
180-1.6 [Orig] The rigidity of foundations and supporting structure shall be sufficient to prevent misalignment which would interfere with operation of the machinery and equipment and to preclude excessive vibratory motion or rocking on the foundation.