HB FY21 Dry Dock Repair Spec_Rev 1.pdf

NOAA SHIP HENRY B. BIGELOW (R225)

FY 2021

DOCKSIDE REPAIRS

DETAIL SPECIFICATIONS

March 2020 – Rev. 1

NOAA - Port Office Northeast Marine Support Facility

166 Water Street Woods Hole, MA 02543

NOAA Ship Henry B. Bigelow FY21 Dry Dock Repairs

Table of Contents

1. Scope

2. General

3. Basic Items – ORF 10000

3.1 Item 19920: Temporary Services

3.2 Item 19970: Drydocking and Routine Drydock Work

3.3 Item 15050: Sea Valve Overhaul

3.4 Item 16330: Zinc Renewals

3.5 Item 16331: Cathodic Protection System Inspection & Replacement

3.6 Item 16310: Underwater Body Coating

3.7 Item 15680: Bow Thruster Inspection and Overhaul

3.8 Item 15820: Ground Tackle Inspection and Preservation

3.9 Item 12430: Rudder/Tail Shaft Removal and Inspection

3.10 Item 12440: Propulsion Shaft Thrust Bearing Inspection

3.11 Item 16311: Freeboard Preservation

3.12 Item 15720: Crane Bolt Inspection and Replacement

3.13 Item 15721: Load Tests

3.14 Item 10910: ABS Special Survey – No. 3

3.15 Item 13100: Generator Cleaning

3.16 Item 11000: Centerboard Overhaul

3.17 Item 15722: Crane Repairs & HPU Pumps Overhaul

3.18 Item 15550: Portable and Fixed Fire Extinguishers Inspection

3.19 Item 15830: Liferaft Annual Inspection/Test Certificate

3.20 Item 15831: Fast Rescue Boat Davit Inspection - Annual

3.21 Item 15140: Chilled Water Pipe Insulation Renewal

3.22 Item 15910: Trawl Winch Lebus Sleeves Procurement/Installation

3.23 Item 16340: Aft Main Deck Asphalt Tile Removal and Deck Preservation

3.24 Item 11230: Miscellaneous Tank Steel Repairs

3.25 Item 14810: Temperature Sensor & Housing Replacement

3.26 Item 10950: Dockside Trials

3.27 Item 10951: Sea Trials

4. Basic Items – PAC 20000

4.1 Item 24380: FE700 IMO Sounder Upgrade

4.2 Item 24240: EM2040-04 Multibeam System Installation

4.3 Item 23620: Mission UPS Upgrade

5. Additional Work Items – ORF 30000

5.1 Item 30000: Additional Work Requirements (AIR/Growth)

6. Additional Work Items – PAC 40000

6.1 Item 40000: Additional Work Requirements (AIR/Growth)

7. Option Items – ORF 50000

7.1 Item 52560: Main Sea Chest Valve Electric Actuator Installation

7.2 Item 55280: Valve Installations

7.3 Item 51700: Main Mast Preservation

7.4 Item 56342: Decking – Preservation Alcove Deck Covering Replacement

7.5 Item 56110: Portlight Overhauls

7.6 Item 55910: Bilge Preservation

7.7 Item 51360: 01 Weather Deck Preservation

8. Option Items – PAC 60000

8.1 Item 64300: Dial Telephone & Public Address/General Alarm Systems Upgrade

8.2 Item 64390: Closed Circuit Television System Upgrade

9. Appendix

9.1 Standard Specifications

9.2 Drawings

9.3 Tech Manuals

9.4 Government-Furnished Equipment

9.5 Miscellaneous

9.6 Weight Reporting Spreadsheet

1. Scope

1.1 These detailed specifications contain requirements for NOAA Ship Henry B. Bigelow (R225) FY21 Dry Dock Repairs.

1.2 Scope and Intent of the Drydock or Dockside Ship Repair

Contract

1.2.1 The National Oceanic and Atmospheric Administration

(NOAA) operates a fleet of research vessels that supports research and mapping for the National Fisheries Service, National Ocean Service, Office of Atmospheric Research and the National Weather Service, as well as provides support to other Federal agencies. These research missions are time sensitive and therefore the data must be collected at specific times during the sailing season to be meaningful. At the end of each sailing season the vessels enter a repair period (drydock or dockside) to address repairs that have been previously identified, perform upgrades to mission systems or ship systems that either extend the life of the ship or provide new data collection capabilities or for safer operations of ships systems as well as address any emergent work that would adversely affect the ships ability to safely perform its mission on schedule, while meeting all regulatory body requirements (American Bureau of Shipping and United States Coast Guard) and all habitability requirements, including any that may be required as a result of contracts for personnel to augment ship staff. The work items in the repair specification are identified well in advance of the performance period in order meet the contracting lead times.

Additional work items (emergent work) may arise during the period between the work package submittal, contract award, or even prior to the start of or during the contract performance period. In accordance with Commerce Acquisition Regulation (CAR) clause 1352.271-72, the Contracting Officer may order additional changes during the contract period of performance to address any additional work items identified as necessary to ensure the intent of the drydock or dockside repair contract is met; that is, that the vessel shall be able to safely perform its mission, that it will meet all habitability requirements and regulatory body requirements, and that such repairs will be timely performed to ensure to the maximum extent practicable that the ship's schedule is not adversely impacted.

2. General

2.1 References

2.1.1 NOAA Standard Specification AMC-000-1F, “General

Requirements for Contract Repair Work on NOAA Ships”

2.1.2 NOAA Standard Specification MOC-631-2D, “Coating

Systems for Steel Surfaces”

2.1.3 NOAA Drawing HB-085 FA02, “General Arrangements”

2.1.4 NOAA Drawing HB-631 FF04, “Painting Schedule”

2.1.5 NOAA Drawing HB-085 FF01, “Insulation Arrangement”

2.1.6 SECNAV Form 5512-NSNPT

2.2 Requirements

2.2.1 References 2.1.1 through 2.1.5 form a part of these

Detail Specifications. All provisions and requirements contained therein are applicable to all work items, including all additional work items, which are authorized by the Contracting Officer. All work procedures and all materials shall meet ABS Rules.

2.2.2 Unless otherwise stated in these work items, prepare

and coat all new steel, disturbed steel, or otherwise required painted surfaces in accordance with References 2.1.2 and 2.1.4.

If no paint system is identified in the item, then apply the appropriate coating system similar to the area being coated as identified in Paragraph 5.2 of Reference 2.1.2 except that the top coat shall match the surrounding area

2.2.3 There are areas on the ship (mainly in the engine

compartments but not solely) that has lead septum (sheathing) in between the insulation on the bulkheads and overheads.

2.2.4 Provide an electronic copy of all Condition Reports in

Adobe Portable Document Format (.pdf).

2.2.5 The NOAA Ship Henry B. Bigelow, ABS ID Number

06142681, is a fully ABS classed ship. An ABS surveyor will be required for some of the work items on this specification. The contractor shall provide (schedule) the services of the local ABS Surveyor as required by ABS to retain the ship in ABS class during the accomplishment of this specification. Provide a copy of ABS approved welding procedures and a list of currently ABS qualified welders. NOAA will pay for all ABS surveys using a Blanket Purchase Agreement associated with work required by these specifications. The Contractor shall provide a credit for any additional ABS charges associated with rescheduling of surveys and rework surveys which are directly under the control of the Contractor.

2.2.6 Provide a copy of ABS approved welding procedures and

maintain a list of currently ABS qualified welders. This list must be provided prior to any welding on the ship.

2.2.7 The contractor shall provide adequate ventilation

(exhaust) in all areas where hot work (grinding, welding, etc.)

occurs on the ship to ensure that all smoke and airborne debris are removed from the interior spaces of the ship.

2.2.8 Weigh all materials and items removed, installed, or

relocated on the ship. Provide a summary report to the COR indicating the total weight in pounds of the materials and items with a breakdown of their locations by space, deck, frame, distance from centerline, and height off of the deck. A sample Weight Report form is attached to these specifications.

2.2.9 Redline “as-built” drawing for modifications

accomplished by these detail specifications.

2.2.10 Electrical power distribution systems available aboard the ship for Contractor power tools include 480vac via three submersible pump receptacles and 120vac receptacles throughout the ship. If the ship’s electrical systems noted above are not adequate to support the contractor then the contractor is responsible for providing additional electrical services, as needed, to complete all work on this contract.

2.2.11 The Contractor shall minimize shipboard work and

inspections requiring ship’s force and COR presence on December 24 and 31, 2020. Shipboard work may include mechanical tools and light industrial work. The Contractor shall not schedule nor conduct any shipboard hot work during these periods. The contractor shall not conduct any shipboard work on December 25, 2020 or January 1, 2021.

2.2.12 Vehicle and personnel access to NOAA Ship Henry B.

Bigleow for pre-bid inspections and all work is restricted via gated security. Naval Station Newport requires all personnel needing access onto the base to be vetted prior to entering the base by filling out SECNAV Form 5512-NSNPT, see reference 2.1.6.

All contractors, vendors, and visitors are required to make pre-arrival arrangements for access by submitting SECNAV Form 5512- NSNPT at a minimum of 14 days in advance of the pre-bid inspection date to the Port Engineer via email at Kenneth.d.marston@noaa.gov. The port engineer can be reached with any additional questions at 508-642-3986.

2.2.13 The pre-bid inspection will be held at Naval Station

Newport – Pier 2, 68 Peary Street, Newport, RI unless otherwise noted in the solicitation.

2.2.14 Metrication

a. A combination of Standard English units of measure (feet – pounds) and Metric System International (SI) units of measure (millimeter - kilogram) were used in the builders' drawings, specifications and reference materials for construction, operation, maintenance and repair of this ship.

In this specification for NOAA Ship Henry B. Bigelow, there is a combination of Standard English units and metric units.

2.3 Notes

2.3.1 Descriptive data of NOAA Ship Henry B. Bigelow:

Length Overall: 208.6 feet Beam (Molded): 49.2 feet Displacement: 1,840 metric tons Light Ship

2,479 metric tons Full Load mailto:Kenneth.d.marston@noaa.gov

Draft: 20.35 feet Full Load Centerboard Retracted

29.7 feet Full Load Centerboard Extended

Cruising Speed: 12 knots [Max speed 14 knots] Propulsion: Diesel Electric, Single Propeller, Fixed Pitch, with two, in-line 1508 Hp DC Motors

Generators: Caterpillar 3508B, 3512B (two each) 600 volts AC

Bow Thruster: Elliott 40T3S, 360 Degree Electric Service: 480 volts AC Year Built: Commissioned July 2006 Builder: VT Halter Marine Inc., Moss Point, MS

ABS ID: 06142681

IMO Number: 9349057 Construction: Welded Steel Hull, Aluminum

Superstructure Crew size: 22 Bunks: 39 Homeport of Record: Newport, OR

3. Basic Items – ORF 10000

3.1 Item 19920: Temporary Services

3.1.1 Intent

a. Provide all labor, material and equipment for Temporary Services at the Contractor’s Facility.

3.1.2 References

a. NOAA Standard Specification AMC-000-2C, “Temporary Services at Contractor Facilities”

3.1.3 Government-Furnished Material

a. None

3.1.4 Requirements

a. Provide temporary services required in accordance with Reference (a) with shore connection details and additional requirements as follows for the entire performance period:

1. Electrical Shore Power --- Two (2) circuits rated for 480 VAC, 3-Phase, 60-Cycle, 400-Amp continuous service each (800 amps total). The Contractor has the option to connect directly to ship’s NATO-standard plug (MIL-C-24368) receptacles located on the 01-Deck aft connection box, or to use ship’s shore power cables with NATO-standard plugs. If ship’s cables and plugs are used, provide protection to prevent damage to ship’s plugs and cables.

2. Potable Water --- One 1-1/2 inch hose providing a minimum of 100 gallons per minute in a range of 40 to 60 psi.

3. Telephone Service --- Two lines to ship’s telephone shore tie (2 voice). Telephone service shall include local calls, toll free calls, and calling card calls only.

Long distance calls shall either be blocked or itemized and billed directly to the ship for payment.

4. High-Speed, Broadband Internet Connectivity ---

Internet connections via local Internet Service Provider (ISP).

High-speed, broadband internet is defined as Digital Subscriber Service (DSL) or cable internet service with typical minimum download speeds of 200 Mbps. The service shall be a business-type account that supports VPN connections, if available, and shall include necessary DSL or cable modem provided by the ISP.

Provide one high speed connection to the ship. The ship’s connection shall be available while the ship is dockside and while the ship is in the dry dock.

5. Sanitary and Cooling Water --- One 2-1/2 inch hose providing a minimum of 150 gallons per minute in a range of 45 to 60 psi.

6. Sewage Disposal --- One 3-inch cam lock quick-disconnect fitting and hose.

7. Garbage --- One dumpster on the fantail or near the stern of the ship on the pier.

8. Vehicle Parking Spaces --- A minimum of six spaces inside the gate, near the dockside office spaces or the ship, plus a minimum of six more spaces outside the gate.

9. Security --- Security services to make rounds of the ship hourly [this is an increase from every two hours required in reference (a)] on weekdays from 1600 – 0800 and on weekends and federal holidays from 1600 Friday to 0800 Monday.

10. Engine Room Bilge Cleaning --- In addition to disposing of oily water in engine room bilges in Reference (a), pump out and dispose of an estimated 1200 gallons of waste oil from waste oil tank 4-47-1 and an estimated 1200 gallons of oily water from oily water tank 4-47-2. Access these tanks through manhole covers in Engineers Workshop 3-39-01 and Auxiliary Machinery Room 3-39-01. After pumping out these tanks, close access covers with new gaskets.

11. Crane Service --- Provide crane services and rigging services on an as-needed basis for an estimated total of twenty (20) hours for loading or offloading ship’s equipment and loading ship’s stores. Crane loads are estimated not to exceed to 5,000 pounds. Provide the COR with a procedure to request crane services with nominal four hours advance notice. If additional crane service is needed beyond estimated twenty (20) hours, then the COR will provide an additional item request (AIR) to the Contracting Officer for negotiated contract modification.

12. Ship’s Force may elect to obtain separate lodging ashore during this contract performance period. Temporary service requirements for ship’s habitability may be adjusted accordingly. Service reductions may be the subject of a negotiated contract modification.

3.1.5 Quality Assurance

a. COR Inspection.

3.1.6 Notes

a. Steam is not required.

END OF ITEM

3.2 Item 19970: Drydocking and Routine Drydock Work

3.2.1 Intent

a. Provide all labor, material and equipment for drydocking the ship, cleaning the hull, inspecting underwater body portions of the hull, and refloating the ship.

3.2.2 References

a. NOAA Standard Specification AMC-997-1A, “Drydocking and Routine Drydock Work”

b. NOAA Drawing HB-085 FA04, “Docking Drawing”

c. NOAA Drawing HB-100 FH02, “Hull Forebody Scantlings FR

0 – FR 18”

d. NOAA Drawing HB-100 FH05, “Hull Transom Scantlings FR 82 – Transom”

e. NOAA Drawing HB-110 FH03, “Hull Midbody Scantlings FR

19 – FR 49”

f. NOAA Drawing HB-110 FH04, “Hull Sternbody Scantlings

FR 49 – FR 82”

g. NOAA Drawing HB-461 FE93, “Transducer Arrangement and Installation”

h. NOAA Drawing HB-163 FP19, “Sea Chest Diagram”

i. NOAA Tech Manual HB-244 (FRV40-225-006-010), “Stern Tube Bearing (Thordon Compac) and Shaft Seal (Kobelco)”

j. NOAA Tech Manual HB-562 (FRV40-225-071-010), “High Performance Flap Rudder, Willi Becker”

k. Naval Ships’ Technical Manual Chapter 081, “Waterborne

Underwater Hull Cleaning of Navy Ships”

l. NOAA Docking Report S0700/SWB997

3.2.3 Government-Furnished Material

a. None

3.2.4 Requirements

a. Provide dry docking and routine dry dock work in accordance with Reference (a) and the following:

1. Dry dock the ship within 72-hours of ship’s arrival at the contractor’s facility.

2. Provide a tug(s) to assist in bringing the ship from the pier into the dry dock and to remove the ship from the dry dock to the pier. The tug(s) shall be of sufficient size to easily control the ship to/from the dry dock.

3. Use Reference (b) blocking position 2. Keel block heights shall not be lower than the heights shown on reference (b) to allow for access to transducers, centerboard and for removal of the bow thruster. Use References (c) through

(f) as guides. The blocking must be done as shown on Reference

(b) with the aft keel blocks lower than the forward keel blocks.

This allows the decks to drain when the ship is on the blocks.

Having all the keel blocks being the same height will not be accepted.

4. After positioning and before hauling the ship, conduct a diver’s inspection of underwater keel block positions relative to hull mounted transducers and associated fairings to verify that keel blocks will not come in contact with these fixtures.

5. Ensure that all transducers (hull mounted and centerboard mounted), the 3 temperature probes on starboard side of the ship near frame 38 and the anti-foulant anodes, located between frames 24-25 and 81-82 port/starboard sides (4 total) are covered in accordance with Reference (a), paragraph 3.11.6, prior to cleaning the ship’s hull via high pressure spray. Use

Reference (g) as a guide for the locations of all the hull mounted and centerboard mounted transducers. DO NOT SPRAY ANY

TRANDUCER FACES OR WINDOWS WITH HIGH PRESSURE SPRAY.

6. While the ship is in drydock, clean each transducer, including centerboard transducers, face or window from the hull bottom using a normal, mild, synthetic soap, water and a soft bristle brush. Only under extreme conditions use a piece of dull wood or very fine grade sand paper (by hand).

a) Do not use strong solvents,

b) Do not attempt to scrape with sheets of metal, screwdrivers or other metallic tools,

c) Do not use high pressure water to clean the transducers or windows.

7. Carefully inspect each transducer, transducer window, mounting hardware and seals for evidence of cracks, scrapes, blistering, corrosion or other anomalies that would indicate an unsound unit. Notify the COR immediately should any of these conditions are found.

8. Photograph and submit a report to the COR on each transducer and window cleaned. Photos should provide enough detail to clearly see the details of each transducer or window surface. Report should include transducer name, location, and condition remarks.

9. All transducers (except item 1 a, b, and c) are installed through to the hull in the Transducer room (4-23-0) located between frames 23 and 29, reference 2.1.3. The transducers and types are arranged as outlined in reference (b) and listed in table 3.2.1. All acoustic windows are ¾ inch Plexiglas. Note that item 9A, Multibeam Sonar is not installed.

a) Item 1 (a) is installed in the transducer room, but in a flooded void,

b) Item 1 (b) is also installed in a flooded void but is located just above the screw.

Table 3.2.1: Transducers

Item Equipment Name Manufacturer Model Type

1 Self Noise Hydrophone (a), (b) and (c)

Harris Acoustic Products

HAP-5050 Window

2 Ship's Depth Finding Transducer

Furuno CA50B-68

/ FE-700

Face

3 Speed Log Transducer Sperry Marine SRD 500 Face

4 Electromagnetic Speed Log Transducer

C.Plath NAVIKNOT

III

Face

5A Acoustic Doppler Current Profiler (ADCP) Transducer

RDI (Ocean Surveyor)

ES 18 Window

8 Fish Finding Transducer

Simrad 50/200 D Face

9A Multibeam Sonar Not Installed

10 Passive Sonar Transducer

AIRMAR 41065-1-

Face

15 ME-70 Transducer Simrad ME-70 Face b.

c. Inspect all other shell plate openings listed on references (b), sheet 6, and (h). Provide results on a condition report.

d. Measure and record stern tube bearing wear down readings, specifically the shaft-to Thordon stern tube bearing clearance in accordance with reference (i).

e. Inspect rudder sections to the extent possible without removing rudder welded access plates in accordance with reference (j). Remove bolted covers or obstructions, measure Neck Bearing, Rudder Hinge, Link System slide bolt to slide bushing clearance, completing the BEARING CLEARANCES table.

Perform an inspection of the rudder with COR, providing for a man-lift or scaffolding to reach all rudder areas. Provide results on a condition report. Notify ABS surveyor of availability for inspection.

f. In addition to feeler gage measurements of bearing/shaft/pin clearances taken above, perform a test of the rudder and the rudder flap clearances by jacking the rudder forward, aft, port and starboard to determine amount of travel at a convenient location to attach dial indicator measuring travel of the rudder with respect to the hull. Measure and record travel and dial indicator location(s) on a condition report.

g. Remove rudder and rudder flap drain plugs and inspect for water leakage into the rudder and flap. Renew and reinstall plugs upon receipt of condition report response.

h. Inspect existing hull mounted zincs for wastage.

These are nominal 23 pound bolted strap type measuring 1-1/4 inch x 6 inch x 12 inch. Check all bolts for tightness. Record condition and location of zincs to document existing conditions and determine cathodic protection system effectiveness. Ships designed zinc anode quantities and locations are as follows:

1. 32 zincs in Bow Thruster Tunnel,

2. 06 zincs in Port Sea Chest,

3. 06 zincs in Starboard Sea Chest.

i. Remove void drain plugs listed below and inspect for water intrusion. Record results on a condition report. Fill and drain or float coat voids and rudder with rust preventive compound complying with MIL-C-16173, Grade 5, or Eureka Fluid Film Liquid A or equal. Reinstall void drain plugs using ABS approved thread anti-seize sealant on all plugs:

1. Skeg drain plug frame 87-88 starboard,

2. Aft stern tube structure,

3. Port & starboard bilge keels,

4. Rudder and rudder blade/flap.

j. Clean/polish the propeller blades in accordance with reference (k), section 081-3.3 and Table 081-3-2.

k. After the propeller has been cleaned and polished, contact the COR to inspect the propeller. After COR inspection, protect the propeller with padding to prevent damage until just prior to undocking.

l. Record hull inspection results on reference (l) in lieu of Docking Report form 2410 in reference (a).

3.2.5 Quality Assurance

a. COR/Ship’s force inspection.

3.2.6 Notes

a. Verify the tank capacities using reference (b).

3.3 Item 15050: Sea Valve Overhaul

3.3.1 Intent

a. Provide all labor, material and equipment to overhaul the ship’s sea valves.

3.3.2 References

a. NOAA Standard Specification AMC-505-1B, “Valve Overhaul and Test”

3.3.3 Government-Furnished Material

a. None

3.3.4 Requirements

a. Remove, overhaul, test, and reinstall sea valves listed in Table 3.3.1 below in accordance with Reference (a).

The term “overhaul” used in Reference (a) shall be redefined for this work item to be the same as “rebuild” is defined in NOAA Standard Specification MOC-000-1G. In lieu of overhaul, the Contractor may renew any valves equal to or smaller than three

(3) inches. All new valves installed shall be flanged, bronze valves with Monel trim (stems, seats, discs internals). Contact the local ABS Surveyor to witness the testing of the sea valves.

b. Most valves have stainless steel fasteners. Replace all fasteners that are not stainless steel. Estimate 20 steel fasteners to be replaces with stainless steel fasteners. If more than 20 fasteners require replacement provide a condition report to the COR stating the valves requiring fasteners to be replaced and the number of fasteners required.

c. Apply an anti-seize lubricant to all new and existing fastener threads prior to installing and tightening.

d. Replace rubber seat gasket flappers in all scupper valves.

e. Inspect scupper valve pins for excessive wear or corrosion. Provide a condition report for any pins requiring replacement.

f. Open all four (4) sea chest strainer (simplex) strainers for inspection by the local ABS Surveyor.

g. Flush all sea chest vents from weather deck vent fittings down through sea chests using water with 100 psig water pressure to remove all mud, slime, and loose rust particles.

h. Replace all overboard discharge pipes from their respective sea valves to the hull. All new pipes shall be schedule 80 pipe and all elbows shall be extra heavy. Provide a list of each valve, pipe size, the length of pipe replaced and all elbows replaced on a spreadsheet and provide to the COR.

i. After successful pressure tests, prime all new piping sections and all disturbed steel areas. Renew the insulation on all pipe sections that were insulated prior to replacing the piping.

Sea Valve List Table 3.3.1

Item # System Valve ID Size Valve Type Miscellaneous

Main Sea Water Valves, Sea Chest Vent’s and Air Purge Valves in Engine Room

1 Sea Chest Inlet Stbd Fr 61 163-VL-01 10” Gate, Bronze, Flanged

2 Sea Chest Vent Stbd 506-VL-50

AKA 163-VL-11

2” Gate, Bronze, 3 Sea Chest Air Blowdown Stbd

551-VL-70

AKA 163-VL-07

¾” Gate, Bronze, 4 Sea Chest Inlet

Port Fr 61

163-VL-02

10” Gate, Bronze, 5 Sea Chest Vent Port 506-VL-49

AKA 163-VL-10

6 Sea Chest Air Blowdown Port

551-VL-69

AKA 163-VL-08

7 Sea Chest Warm Up Stbd Fr 62-63

163-VL-03 6” Gate, Bronze, 8 Stbd Ovbd, Mn SW, Fr 71-

256-VL-23 6” Check, Bronze, 9 Stbd Ovbd, Mn SW, Fr 71-

6” Gate, Bronze, 10 Port Ovbd, Mn SW, Fr 71-72 256-VL-24 6” Check, Bronze, 11 Port Ovbd, Mn SW, Fr 71-72 256-VL-25 6” Gate, Bronze, 12 Oily Water Separator Ovbd, Port Side

593-VL-47 1” Gate, Bronze, 13 Stern Tube Supply 256-VL-48 1¼” Globe, Stainless Steel, 14 Evaporator Dump Ovbd 1½” Gate, Bronze, Meets Mil-V-1189

15 Evaporator Distillate Ovbd 1½” Gate, Bronze, Meet Mil-V-1189

Scientific Sea Water System Valves in Bow Thruster Room and Oceanographic Winch Room

16 Sea chest inlet

Fr 12 Lower

524B-VL-60 2” Butterfly

Ductile iron & Polypropylene lined ASTM D4104

17 Sea chest inlet

Fr 12 Upper

524B-VL-61 2” Butterfly

Ductile iron & Polypropylene lined ASTM D4104

18 Scientific Sea Water Ovbd, Port Side

1” Oceanographic Winch Room

Auxiliary Sea Water Valves in Engine Room

19 Overboard Valve, Ballast Pump

524-VL-11 2½” Scupper Gag valve, Bronze

20 Overboard Valve, Bilge/Ballast/Fire

524-VL-12 2½” Scupper Gag

21 Overboard Valve, Aux SW, Port

524-VL-23 5” Scupper Gag

22 Overboard Valve, Aux SW, Stbd

5” Check valve, Bronze

Upper level engine room

Marine Sanitation Device in Domestic Equipment Room

23 MSD Obvd 524B-VL-77 3” Gate, Bronze, Firemain System in Bow Thruster Room

24 Fire Pump Sea Chest Inlet 163-VL-05 4” Gate, Bronze

25 Fwd Sea Chest Vent 506-VL-48

AKA 163-VL-09

26 Fwd Sea Chest Air Blowdown

551-VL-68

AKA 163-VL-06

Doppler Speed Log Hull Isolation Valve in Transducer Void

27 Frame 27-28, 2 ft port of CL, lower level transducer void

No Mark No. 8” Gate Ships ET will remove/replace the Doppler speed log.

Overboard Drains (Miscellaneous Locations)

28 Frame 21-22, port cleaning gear locker near exercise room

3” Scupper Gag

29 Chill/Freezer, Frame 16, port, grey water overboard

528-VL-34 1½” Scupper Gag valve, Bronze

Top of ladderwell from mess deck to bow thruster access. Under top step.

30 Frame 64, port 528-VL-35 2” Scupper Gag valve, Bronze

Upper level engine room inside supply plenum.

31 Aft main deck hatch drain, Frame 82-83, starboard side

3” Gate valve, Bronze

Trawl Winch Room

3.3.5 Quality Assurance

a. Perform a hydrostatic pressure test on all new piping sections to 10 psig in the presence of the local ABS surveyor.

Repair all leaks, if any.

3.3.6 Notes

a. None

3.4 Item 16330: Zinc Renewals

3.4.1 Intent

a. Provide all labor, material and equipment to renew forty-four existing zinc anodes.

3.4.2 References

a. NOAA Drawing HB-085 FA04, “Docking Drawing”

b. NOAA Drawing HB-163 FP19, “Sea Chest Diagram”

3.4.3 Government-Furnished Material

a. None

3.4.4 Requirements

a. Renew existing hull mounted zinc anodes. These anodes are nominal 23 pound bolted strap type measuring 1-1/4 inch x 6 inches x 12 inches. Zinc quantity and locations are as follows:

1. 32 in Bow Thruster Tunnel

2. 06 in Port Sea Chest

3. 06 in Starboard Sea Chest

4. 06 in Centerboard Trunk

NOTE: Do not install new anodes until after the ship’s hull has been painted.

3.4.5 Quality Assurance

a. COR inspection.

3.4.6 Notes

3.5 Item 16331: Cathodic Protection System Inspection &

Replacement

3.5.1 Intent

a. Provide all labor, material and equipment to inspect the ship’s cathodic protection system, inspect and tune up the Cathelco antifouling system and replace the copper anodes.

3.5.2 References

a. NOAA Tech Manual HB-633-01 (FRV40-225-011-010), “Cathodic Protection System, Marimpress Model: ICCP 50A”

b. NOAA Drawing HB-624 FE70, “Impressed Current Cathodic Protection Arr. & Det.”

c. NOAA Drawing HB-163 FP19, “Sea Chests Diagram”

d. NOAA Tech Manual HB-633-02 (FRV40-225-139-010), “Cathelco Antifouling System Manual”

3.5.3 Government-Furnished Material

a. Copper TZX27 Anodes, 18 Total

3.5.4 Requirements

a. Provide the services of a Cathelco factory-authorized field service technician to supervise evaluation and service of ship’s existing Cathelco Antifouling Protection System after the government furnished copper anodes have been replaced and the ship is back in the water.

b. Prior to any work on this item, and before ship is drydocked, conduct an operational test of ship’s cathodic protection system in accordance with Reference (a). Ship’s Force will operate equipment.

c. Inspect the Marimpress Impress Cathodic Protection System (ICCP) controller, reference cells, and anodes in accordance with Reference (a). Locations are as follows; use

Reference (b) as a guide:

1. Controller in Passage 1-7-01

2. Reference Cells at Frame 24-25 (Located inside the port and starboard No. 2 fuel oil tanks)

3. Anodes at Frame 81-82 (Located inside the Shaft Bossing Void)

d. Using a megohmmeter, measure and record resistance readings between each anode and the hull and between the reference cell and the hull. Readings should be greater than 10 megohms.

e. Open, pump out residual fuel, clean, and certify safe for entry Fuel Oil tanks 4-19-1 #2 Starboard and 4-19-2 #2 Port to gain access to Reference Cells.

f. Inspect reference cell in accordance with Reference

(a) steps 4.1.2 and 4.2.2.3. Unbolt and remove covers and inspect Reference Cell cofferdams from inside the hull and inspect for signs of leakage or corrosion. Inspect external reference cell surfaces for signs of damage. Clean and re-establish coating inside the cofferdam.

NOTE: The inside of the cofferdams are filled with a wax material which will need to be removed to test the reference cells. Renew the wax material after all successful tests have been completed.

g. Open and certify safe for entry Shaft Bossing Void 4- 78-0 manhole 4-78-2 to gain access to anodes.

h. Inspect anodes in accordance with Reference (a) steps 4.1.3, 4.2.2.1 and 4.2.2.1. Unbolt and remove covers and inspect Anode cofferdams from inside the hull and inspect for signs of leakage or corrosion. Check that anodes are securely fastened to the hull. Check that the mounting stud hole filler is intact. Examine anode dielectric shield for any sign of damage.

Report any evidence of damage or leakage on a condition report.

Check cable connections to the anodes for continuity. Clean and re-establish coating inside the cofferdam.

NOTE: The inside of the cofferdams are filled with a wax material which will need to be removed to test the reference cells. Renew the wax material after all successful tests have been completed.

i. Reinstall reference cell and anode cofferdam covers with new gaskets.

j. Close Fuel Oil tanks 4-19-1 #2 Starboard and 4-19-2 #2 Port and renew gaskets.

k. Close out manhole cover 4-78-2 to Boss 4-78-0 and renew gasket.

l. In conjunction with Ship’s force, follow ship’s lockout/tagout procedures to secure all electrical power serving the anodes in the bow thruster compartment and in the engine room main sea chests.

m. Disconnect the wiring to each of the anodes in the bow thruster compartment and in the engine room main sea chests.

n. Renew the government furnished copper anodes in the bow thruster compartment (16 total) and the engine room main sea chests (2 total). See References (c) and (d) as guides for the location of the anodes. When assembling the new anodes in the flange sleeves, place the following over the stud in this order:

Insulating washer, steel washer, brass full nut and brass half nut. Tighten each 27mm nut to 70 ft-lbs with a torque wrench.

Do not over tighten as the nuts will strip. Renew the flange gaskets. See Figures 3.5.1 and 3.5.2.

Figure 3.5.1 – Typical Copper Anode

Figure 3.5.2 – Section view of installed anode. Gasket and flange fasteners are not shown.

o. Rewire each of the anodes.

p. Upon completion of work clear lockout/tagouts.

q. After all work has been completed, and after the ship is refloated, conduct operational tests for manufacturers field service technician to adjust antifouling protection system parameters.

3.5.5 Quality Assurance

a. COR inspection.

3.5.6 Notes

3.6 Item 16310: Underwater Body Coating

3.6.1 Intent

a. Provide all labor, material and equipment to prepare and re-coat the underwater body coating system.

3.6.2 References

a. NOAA Standard Specification MOC-631-3B, “Underwater Body Ablative Coating System”

b. NOAA Drawing HB-631 FF04, “Paint Schedule”

c. NOAA Drawing HB-602 FH60, “Hull Designation and Markings”

3.6.3 Government-Furnished Material

a. None

3.6.4 Requirements

a. The existing coating system is an Ameron Coating System applied during the ship’s last dry docking; therefore all new paint shall be Ameron brand only for compatibility and in conformity with ship’s Paint Schedule.

b. Prepare and coat the entire underwater body, including the centerboard trunk up to the steel/aluminum interface, with a “Complete System” in accordance with the requirements in Reference (a) and as follows:

1. Complete all potential structural steel repairs, access cuts, NDT testing, and hull plate inserts below the waterline, in other work items of these specifications, prior to applying the underwater body coating system.

c. The complete coating system consists of the following:

1. Two coats, 5.0-6.0 mils DFT each, Amercoat 385 epoxy. The first coat may be any color, but the second coat shall be gray.

2. Three coats, 4.0-5.0 mils DFT each, ABC #4 ablative antifoulant. The first and third coats shall be red and the second coat shall be black, except in the boottopping all three coats shall be black.

d. After the last coat of anti-fouling paint has been applied, the underwater body draft marks shall be repainted, with brushes, using Amercoat 229 White in accordance with references (b) and (c).

3.6.5 Quality Assurance

a. Conduct joint inspection of hull with Ameron Coatings Company representative after hull has been high-pressure water-washed. Provide detailed “Paint Plan” in accordance with Reference (a), paragraph 4.1.2, to COR prior to starting surface preparation.

b. Conduct joint temperature and humidity readings with Ameron Coatings Company representative prior to each coat of paint applied.

c. Verify all transducers, including the three (3) temperature transducers located on the starboard side of the side shell, are protected prior to surface preparation and painting as identified in Reference (a).

d. Conduct joint inspection of Dry Film Thickness with Ameron Coatings Company representative gaging after each coat of paint is applied.

3.6.6 Notes

3.7 Item 15680: Bow Thruster Inspection and Overhaul

3.7.1 Intent

a. Provide all labor, material and equipment to overhaul the bow thruster.

3.7.2 References

a. NOAA Tech Manual HB-568 (FRV40-225-008-010), “Bow Thruster Model: 40T3S”

3.7.3 Government-Furnished Material

a. Bow thruster overhaul parts ship set, Enclosure 3.7.1

3.7.4 Requirements

a. In conjunction with Ship’s Force, follow ship’s Lockout and Tagout Procedures to secure/de-energize the bow thruster motor.

b. Remove the port and starboard bow thruster intake gratings on the hull to facilitate inspection. Provide staging to allow inspection.

c. Provide the services of an authorized White Gill technical representative. The technical representative is to be on site for disassembly, inspection, and reassembly, and calibration of the bow thruster. Disassembly and inspection of the bow thruster is to be completed within the first 25% of the contract performance period.

d. Accomplish the following inspections and checks prior to disassembly of the bow thruster:

1. Check the steering gear instrumentation transmitter drive for wear, backlash, or sheared pins.

2. Measure and record the rotor tip/ liner radial clearance.

3. Measure and record the rotor/guide vane hub clearance.

4. Measure and record the discharge deflector/guide vane shell chamfer clearance.

5. Measure and record the steering pinion to deflector gear wheel tooth clearance.

e. Remove the oil from the upper bearing oil system housing and reservoir.

f. Remove from ship to shop and completely disassemble the following components in accordance (a):

1. The rotating thrust deflector assembly from the bottom of the thruster.

2. The static guide vane assembly.

3. The floating shaft assembly between the electric motor drive and the bow thruster shaft. The floating shaft has two each external tooth couplings.

4. The radial/thrust bearing housing.

5. The Packing gland assembly.

6. The rotor shaft assembly and perform the following work:

a) Remove the fiberglass sheathing and renew.

Conduct spark testing of the new sheathing in the presence of ABS and the COR.

b) Upon reassembly of the rotor shaft, statically balance the rotor shaft in accordance with the tech rep’s recommendation in the presence of the COR and ABS.

c) Apply two coats of marine epoxy on the rotor shaft in the area directly above the gland sleeve.

g. The steering shaft assembly and perform the following work:

1. Remove the fiberglass sheathing and renew.

Conduct spark testing of the new sheathing in the presence of ABS and the COR.

2. The steering gear box assembly.

3. Note that in order to rig the rotor shaft through the bottom of the vessel, the contractor will need to disconnect the bow thruster DC motor and associated ducting and piping and raise the motor. This will provide access for rigging of the shaft. Upon completion of bow thruster work, contractor is to realign motor to the shaft, install new chock fast, and restore all ducting, piping, and interferences.

h. Inspect all parts and submit an as found condition report with recommendations. Provide the local ABS surveyor and the COR the opportunity to inspect all disassembled components.

i. Prepare and preserve the bow thruster hull cavity and components by accomplishing the following:

1. Prepare the entire bow thruster sea chest area inside the gratings and thrust deflector, the removed gratings, the thrust deflector, the static guide vanes, and the bow thruster internals to 100% bare steel with 3 to 5 mil surface profile (SSPC-SP6 or equal).

a) Prior to surface preparation, install a gasketed plate in way of the removed rotor shaft at the packing gland. The inside surfaces of the packing gland are to be prepared and coated as well.

2. Apply the same coating system that is being applied to the underwater hull in Work Item 16310, “Underwater Body Preservation”.

j. Upon completion of bow thruster sea chest preservation, assemble and install the bow thrust components using the GFM parts listed in Enclosure (b) and as follows:

1. The contractor is to provide all sealing compounds as necessary and recommended by the technical representative.

2. Lubricate and grease all components and bearings as recommended by the technical representative and outlined in the tech manual. Install oil in the upper rotor shaft bearing housing and reservoir as recommended by tech rep. Install oil in the steering gear assembly.

3. Provide an Environmentally Acceptable Lubricant (EAL) per the Environmental Protection Agency’s (EPA) Vessel General Permit (VGP), water resistant grease with a NLGI of 2.

4. Clean the floating shaft couplings of all grease.

Inspect coupling gear teeth and the coupling hub gear teeth.

Submit as found condition report. Lightly grease coupling interiors, reassemble with new flange gaskets. Remove lube plugs and fill with EAL water resistant grease with a NLGI rating of 2. Approximately 1.5 quarts required for each coupling.

5. The contractor is to tack weld fasteners on sealing plates/torque plates/retaining plates and install lock wire on fasteners as directed by the technical representative.

k. After completion of assembling all the bow thruster components, accomplish calibration and alignment checks to ensure the steering transmitter unit and the proximity switch are operating properly.

3.7.5 Quality Assurance

a. Once the ship is floated and out of the dry dock, the tech rep. is to return to the ship to accomplish final calibration and operational testing of the bow thruster unit in accordance with Section A5 of reference (a).

3.7.6 Notes

a. Bow Thruster:

Manufacturer: Elliot White Gill Model: 40T3S Serial No: ____

b. RCS Evirologic ® Grease 2 WREP is known to NOAA as an Environmentally Acceptable Lubricant (EAL) water resistant Grease.

c. Alternate Para. 3.7.4.f.9. Note it has been found to be possible to conduct this work by cutting off the motor shaft coupling and replacing with new at reinstall.

d. Enclosure 3.7.1 – Bow Thruster Overhaul Parts List

Bow Thruster Overhaul Parts List

Item Qty Description Part No

1 1 IT. 991/3 - ST/SH SEAL SLEEVE 3071WG-1

2 1 IT. 59 - ST SHAFT COLLAR 3057WG-1

3 1 IT. 87 - SENSOR HOUSING - LOWER 4310WG-1

4 1 IT. 92 - SEAL P181R578

5 2 IT. 98 - O-RING P181W426

6 3 IT. 104 - SET SCREW, HEX SOCKET M178E5268

Bow Thruster Overhaul Parts List

Item Qty Description Part No

7 1 IT. 216 - SEAL KEEP PLATE 3881WG-1

8 1 IT. 219 - ST SH SEALING WASHER 3884WG-1

9 9 PIN/BUFFER ASSY. NES195F1AK

Above items are required to overhaul steering shaft upper bearing assembly.

10 1 IT. 25 - R/S GLAND NECK RING 3034WG-1

11 8 IT. 82 - R/S THRUST BRG SPRING P178G22

12 1 IT. 84 - SPHERICAL ROLLER THRUST BEARING P106S170

13 1 IT. 85 - SPHERICAL ROLLER BEARING P106Q200

14 1 IT. 89 - SEAL P181R572

15 2 IT. 90 - SEAL P181R574

16 1 IT. 99 - JOINT - R/S BRG HSG P131C214

17 1 IT. 115 - BOLT, HEX HEAD M10A5282

18 4 IT. 120 - GLAND STUD 3443WG-1

19 4 IT. 123 - HEX FULL NUT M157A714

20 4 IT. 124 - HEX HALF NUT (LOCKNUT) M157B714

21 1 IT. 132 - GLAND PACKING 5105WG-132

22 4 IT. 179 - WASHER, PLAIN M193A14

23 5 IT. 192 - CRUSH WASHER P194T12

24 1 IT. 204 - SHAKEPROOF WASHER M193P510

25 1 COUPLING ACCESSORY KIT INCLUDING

FASTENERS, GASKETS, O-RINGS, GREASE

PLUGS

AK-F204

Above items are required to overhaul rotor shaft upper bearing assembly & gland.

26 14 IT. 101 - ANODE P100E104

27 16 IT. 113 - BOLT, HEX HEAD M10A5282

28 32 IT. 126 - HEX FULL NUT M11A510

29 1 IT. 66 - SENSOR SWITCH 5105WG-66

30 1 IT. 97 - O-RING M160A145

31 2 IT. 103 - CSK SCREW, HEX SOCKET M178D5188

32 2 IT. 205 - SHAKEPROOF WASHER M193P511

Above items are required to overhaul alignment sensors.

33 2 IT. 991/6 - KEY - PINION 4058WG-1

34 1 IT. 12 - PINION 4488WG-4

35 1 IT. 55 - SLEEVE - PINION 4627WG-1

36 1 IT. 56 - ST/SH INTERNAL BEARING 3055WG-1

37 1 IT. 58 - SHAKEPROOF WASHER M193P510

38 1 IT. 112 - BOLT - HEX HEAD M10A5278

39 3 IT. 187 - CSK SCREW, HEX SOCKET M178D5315

40 2 IT. 206 - FAN DISC WASHER M193M514

Above items are required to overhaul steering shaft lower bearing assembly.

41 1 IT. 52 - STUB AXLE SEAL SLEEVE 3053WG-1

42 1 IT. 75 - KEY - STUB AXLE 4042WG-1

43 2 IT. 86 - TAPER ROLLER BEARING P106V75

44 2 IT. 91 - SPECIAL SEAL - DEFLECTOR M179C122

45 6 IT. 110 - CSK SCREW, HEX SOCKET M178D5272

46 1 IT. 181 - JOINT - DEF BRG CAP P131C234

47 1 IT. 183 - BOLT, HEX HEAD M10A5274

48 12 IT. 184 - BOLT, HEX HEAD M10A5274

49 13 IT. 204 - SHAKEPROOF WASHER M193P510

Above items are required to overhaul deflector.

50 1 IT. 7 - R/S LOWER BEARING HSG 3026WG-4

51 2 IT. 47 - LOCKING RING - STUB AXLE BOLTS 4873WG-1

52 8 IT. 48 - BOLT, HEX HEAD M106A5441

53 8 IT. 49 - WASHER PLAIN M193C514

54 1 IT. 54 - O RING - STUB AXLE 5105WG-54

55 1 IT. 80 - ROTOR SHAFT INTERNAL BEARING 3062WG-1

56 1 IT. 107 - SOCKET SET SCREW M178E5226

57 9 IT. 111 - HEX HEAD SETBOLT M106A523

58 8 IT. 117 - BOLT, HEX HEAD M106A5441

59 24 IT. 119 - BOLT, HEX HEAD, DRILLED 3772WG-2

60 20 IT. 129 - LOCKNUT M157B614

61 24 IT. 130 - CASTLE NUT M157T513

62 4 IT. 131 - HEX FULL NUT M157A614

63 4 IT. 133 - BOLT, HEX HEAD M106A5440

64 24 IT. 203 - SPLIT COTTER PIN M168A5135

65 27 IT. 207 - SHAKEPROOF WASHER M193M509

66 1 IT. 990/4 - SLEEVE - GLAND 3077WG-1

67 1 IT. 990/5 - KEY - RS.GLAND SLEEVE 2692WG-1

68 1 IT. 990/6 - JOINT - LOCATION COLLAR P131C215

69 1 IT. 990/8 - O-RING P181W437

70 1 IT. 990/16 - SLEEVE - INTL BRG 4493WG-1

71 1 IT. 990/18 - O-RING P181W432

72 1 IT. 990/20 - SETBOLT, HEX HEAD M108A5475

73 1 IT. 990/21 - PLAIN WASHER M193A515

74 1 IT. 990/22 - O-RING M160A150

Above items are required to overhaul rotor shaft lower bearing assembly.

75 1 IT.87 – SPHERICAL ROLLER BEARING P106Q40

76 3 IT.93 – SPECIAL SEAL M179C106

Above items are required to overhaul rotor shaft lower bearing assembly.

3.8 Item 15820: Ground Tackle Inspection and Preservation

3.8.1 Intent

a. Provide all labor, material and equipment to remove the ground tackle from the ship and sandblast, perform required inspection and to preserve the ground tackle.

3.8.2 References

a. NOAA Standard Specification AMC-581-1A, “Inspection and Preservation of Ground Tackle”

3.8.3 Government-Furnished Material

a. None

3.8.4 Requirements

a. Remove the port and starboard anchor chains. Renew the anchor swivels and pear links.

b. Sandblast or Ultra High Pressure (UHP) water jetting, IAW SSPC-SP-12, WJ3, inspect, test, preserve and reinstall the port and starboard anchor chains in accordance with Reference (a). Provide the services of the local ABS surveyor to inspect the chain and to witness all dimensional tests. Coordinate the removal of the chains with the deck department. Preserve the anchors with PPG-Ameron 302H and 385 Black in accordance with page 9 of 34 (pg. 10 of the PDF file) of Reference 2.1.4.

Preserve the anchor chains with PPG-Ameron 302H and 385 Black in accordance with page 10 of 34 (pg. 11 of the PDF file) of Reference 2.1.4.

c. While the anchor chains are removed from their respective lockers, clean and inspect the interior of each locker and provide the COR with a condition report on the findings. Contact the local ABS surveyor to inspect the anchor chain lockers.

d. Power tool clean and preserve 10 percent of each chain locker interior at locations to be determined by the COR.

e. Mechanically clean out the chain locker deck drains to ensure they are free of all debris and drain freely.

f. After completion of all work, coordinate the reinstallation of the anchors and chains with the deck department.

3.8.5 Quality Assurance

a. COR inspection.

3.8.6 Notes

a. There are 12 shots of chain in the starboard chain locker and 10 shots of chain in the port chain locker. The chain is Ø36mm, grade 3.

3.9 Item 12430: Rudder/Tail Shaft Removal and Inspection

3.9.1 Intent

a. Provide all labor, material and equipment to remove, inspect, repair and reinstall the rudder, propulsion shaft and shaft seal assembly. To fulfill all ABS requirements for a Special Periodical Survey – Tail Shaft.

b. The Special Periodical Survey – Tail Shaft is to include sufficient examination, tests and checks carried out by the ABS Surveyors to satisfy themselves that the tail shaft, bearings, propeller, machinery, tube shaft, and all other equipment and related piping are in or are placed in satisfactory condition and are fit for the intended purpose for the new period of class of five (5) years to be assigned, subject to proper maintenance and operation and to periodic surveys being carried out at the due dates. The survey is to consist of withdrawing the shaft in its entirety.

3.9.2 References

a. NOAA Tech Manual HB-562 (FRV40-225-071-010), “High Performance Flap Rudder, Model: Becker FKSR”

b. NOAA Drawing HB-562 FM02, “Rudder Arrangement”

c. NOAA Standard Specification AMC-240-1, “Propulsion Shaft and Propellers”

d. NOAA Tech Manual HB-244 (FRV40-225-006-010), “Stern Tube Bearing (Thordon Compac) and Shaft Seal (Kobelco)”

e. Cooper Bearing Drawing 1L20033/1

f. NOAA Tech Manual HB-633 (FRV40-225-011-010), “Cathodic Protection System, Marimpress Model: ICCP 50A”

g. NOAA Tech Manual HB-243 (FRV40-225-099-010), “Marine Shaft Braking System, Twiflex Model: T40-EN Caliper(s) with 20:1 Air/Hydraulic Intensifier”

h. SKF Instruction Number 81489, “The SKF OKV Coupling

Mounting & Dismounting Instruction”

i. SKF Drawing 25616 Rev 9, “Ovako Couplings AB”

j. Standard: MIL-STD-2199: Glass reinforced plastic coverings for propeller shafts

k. KEMEL Service Report Dated 09/24/2019

3.9.3 Government-Furnished Material

a. None

3.9.4 Requirements

a. Propulsion Shaft Alignment Analysis

1. Prior to the ship proceeding into the dry dock, provide an industry specific alignment expert with PE credentials to attend vessel to measure and report on main propulsion shaft bearing loads via strain gauge method. Strain gauges to remain installed on the shaft to allow for periodic measurement in the future. Record the bearing loads in Table 3.9.1:

Table 3.9.1: Measured Propulsion Shaft Bearing Loads (lbs)

Bearing Vertical Horizontal

Thrust Bearing

Line Shaft Bearing

Stern Tube Bearing

b. Contractor Furnished Materials

1. Contractor furnished materials shall include, but is not limited to the following: Shaft Seal 5-yr kit, with two spare seals;

Five year kit includes the following: Item No.

QTY Description

1 3 Sealing rings – Size 450 for 458mm shaft size

2 3 Garter Spring - size

3 1 Rubber ring for mating ring

4 1 Inflatable sealing ring

5 1 O-ring for inflatable retainer

6 1 Gasket for housing

7 10 Spring washer

8 12 Spring washer

2. shaft coupling seal PC 4,

3. Line shaft bearing new oil seals for installation qty = 2,

4. Line shaft bearing oil,

5. Rudder O-Rings,

6. Shaft coupling mounting/dismounting equipment.

c. Rudder Removal

1. Prior to removing the rudder operate the rudder from hard over to hard over and record the total travel (in degrees) to each side.