0901_A_DRY-DOCKING_AND_UNDOCKING_VESSEL(1).docx

USNS LEWIS AND CLARK

(T-AKE 1)

DRY-DOCKING AND UNDOCKING VESSEL

1.0 ABSTRACT

1.1 This item describes the requirement to dock/undock the vessel and to accomplish repairs as specified elsewhere in these Specifications. The vessel shall be dry-docked at the Contractor’s facility.

2.0 REFERENCES:

2.1 Trim & Stability Booklet, Dwg. 801-7488869

2.2 Docking Plan, Dwg. 801-8388177

2.3 Capacity Plan, Dwg 801-7488865

2.4 Safety Certification Program for Dry-docking Facilities and Shipbuilding Ways for U.S. Navy Ships, MIL-STD 1625C(SH)

2.5 COMSC Instruction 9997.1A, Dry dock Standards for MSC Ship Availabilities

2.6 Docking Report, Forms NAVSEA 9997/1,2,3 and 4

3.0 ITEM LOCATION/DESCRIPTION:

3.1 Vessel Principal Characteristics:

USNS TAKE CLASS

Anticipated (Approximate) Arrival Conditions

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None

5.0 NOTES

5.1 The contractor and all subcontractors, regardless of tier must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTR’s including but not limited to GTR’s 1 through 7 and 29.

5.2 The contractor and all subcontractors, regardless of tier, are advised to review other work items under this contract to determine their effect on the work required under this work item. Many of the definitions relating to performance of this work item are found in Work Item 001.

5.3 The Contractor shall schedule dry-docking of the vessel during the availability dates such that all dry dock work, plus an additional 20% of emergent dry dock necessary work can be accomplished, and the vessel will be undocked in a timely manner to allow the Ship’s force to light off and stabilize the machinery plant. This will enable the Dock Trials and Sea Trials to be conducted in accordance with Work Item 022, entitled “Dock Trials and Sea Trials,” as outlined in this Specification.

6.0 QUALITY ASSURANCE REQUIREMENTS: None additional

7.0 STATEMENT OF WORK REQUIRED:

7.1 Arrangement/Outfitting

7.1.1 The Contractor shall provide a single section steel or concrete floating dock, marine railway or graving dock certified in accordance with Reference 2.5. The dry dock must be certified to lift the vessel according to approved stability and docking calculations, as provided by the Contractor per the requirements of paras 7.1.5 through 7.1.7. A copy of the Certificate must be submitted with the Proposal, as well as be available for inspection by the MSCREP during the performance period. The Certificate shall show Issuing Party, Docking facility name (i.e. Shipyard), specific name or number of the dock, issue date, expiration date, maximum lift capacity, maximum allowable keel line loading and any restrictions or exceptions for operation of the dock. If certificate is issued by a third party per Reference 2.5, the party shall be specifically identified, the document shall be signed by a Professional Engineer representing the certifying third party and that individual shall stamp or emboss the certificate with their personal stamp or seal.

7.1.1.1 Dock length overall is to be greater than the vessel’s LOA, regardless of type of dock used. Exception to this requirement will be considered on a case by case basis by the MSCREP during the bid phase.

7.1.2 The Contractor shall provide all labor, material, equipment and services to dock/undock the vessel.

7.1.3 Provide the services of a Dockmaster who has been certified in accordance with Reference 2.4 and accepted by the MSCREP. Documentation of Dockmaster certification shall be provided as part of the offeror’s submittal. In lieu of Reference 2.4 certification, Dockmaster’s training and past dry-docking experience shall be provided.

7.1.4 Contractor shall erect, set and align blocks in Position No.2 in accordance with Reference 2.2.

7.1.4.1 Position blocking to ensure that propeller, rudder, and other equipment residing on the surface of or protruding from the hull will not be damaged and will be accessible for removal and repair. Remove and/or shift blocks as required to accomplish work required by other work items and to permit examination of all tank’s drain plugs, transducers and other underwater hull appendages by the ABS Surveyor and MSCREP.

7.1.4.2 Provide at least 5 feet of clearance between the vessel’s keel and the dry dock floor. Provide at least 5 feet of clearance on each side of the vessel to allow performance of dry dock work. Exceptions to these clearance requirements will be considered on a case by case basis by the MSCREP during the bid phase.

7.1.4.3 Blocking shall be constructed of hardwood or composite concrete/hardwood and softwood caps as specified in Reference 2.2 with at least two (2) inches of softwood cap thickness. All softwood caps shall be installed pre-shaped to fit the hull in accordance with Reference 2.2.

7.1.4.4 Crib and brace blocking as required by Reference 2.2. Blocking in excess of six (6) feet in height shall be cribbed and/or braced in accordance with the requirements of Reference 2.4.

7.1.5 Contractor proposals (or requests) to modify or deviate from the blocking arrangements specified by Reference 2.2 shall be submitted to the MSCREP, in writing, no later than fourteen (14) calendar days prior to the scheduled dry-docking. The proposal shall describe all intended modifications or deviations from Reference 2.2 and all technical data (i.e. proposed docking plan, table of offsets, block details, etc.) necessary to evaluate the results of the proposed modification. Permission in writing from the MSCREP is required prior to modifying the blocking arrangement specified in Reference 2.2.

7.1.5.1 All proposed modifications and deviations shall include supporting calculations which substantiate the block loading pressures are within the following maximum values:

Side blocks – 800 psi Keel blocks – 370 psi Knuckle block(s) with hardwood caps – 600 psi NOTE: For narrow skegs or bar keels, or where knuckle load is in excess of 600psi, a minimum 40.8# plate steel cap shall be used.

7.1.5.2 All blocks shall land on longitudinal strength members or main transverse bulkheads.

7.1.6 The Contractor is responsible for developing a suitable loading condition as well as the preparation of the vessel into this loading condition.

7.1.6.1 The Contractor may add, transfer or remove solid and/or liquid loads (i.e. concrete blocks, fuel oil, water ballast) as required to achieve proper trim and stability conditions for dry-docking and undocking.

7.1.6.2 The Contractor shall remove and/or transfer ballast and fuel as required to accomplish other work items, while continuing to meet the requirements of paras 7.1.5 and 7.1.7.

7.1.6.3 Clean storage and return of fuel oil removed for dry-docking is the responsibility of the Contractor and shall be accomplished as described in Work Item 0021, para 7.3, 7.4 & 7.5.

7.1.6.4 Disposal of any water ballast used in connection with this work item is the responsibility of the Contractor and shall be accomplished at no additional cost to the government.

7.1.6.5 The Contractor shall take care not to contaminate clean tanks or interchange tank contents.

7.1.6.6 Ship’s Force personnel and Ship’s equipment shall not be used for transferring liquids.

7.1.7 For all docking evolutions, submit to MSCREP for approval, fourteen (14) calendar days prior to docking and seven (7) calendar days prior to undocking, applicable stability calculations.

7.1.7.1 Stability calculations shall determine draft at instability and ensure adequate stability throughout all phases of the docking evolution. If in a floating dock, stability of the combination of vessel and dock shall be analyzed as well.

7.1.7.2 Provide maximum trim calculations. If vessel is to be docked in a floating dry dock and the trim will be matched during docking, or if trim is less than any maximum trim listed on Reference 2.2, calculations are not required.

7.1.7.3 Obtain tank soundings from the Ship’s Master and Chief Engineer. Confirm the soundings obtained. Determine the ballast required to place the vessel in the trim and stability condition specified by paragraph 7.1.7.1.

7.1.7.4 Calculations shall be provided showing that vessel loading will not exceed allowable keel line loads as indicated on Dry dock certificate.

7.1.7.5 Calculations shall also analyze the effect on the dock of all work to be accomplished while on dock and show that keel line loads on dock will not, at any time, exceed the dock allowable indicated on the Dry dock certificate.

7.1.7.6 For a floating dock, a pumping plan in accordance with Reference 2.4 shall be submitted to the MSCREP.

7.1.8 Provide tugs, and pilots, for the complete transfer, dry-docking and undocking of the ship. The number of tugs is to be as agreed to by the ship's Master at the dry-docking/undocking conferences. At least one tug capable of maneuvering vessel shall remain on standby until vessel is hard on the blocks.

7.1.8.1 Mooring lines used in the transfer, dry docking and undocking of the vessel shall be provided by the contractor. Lines shall be in good condition, free of excessive wear, fraying, abrasions, compressions, hockles or bird-caging.

7.1.9 The Contractor shall provide the services of qualified divers during the docking operation to inspect and assist in alignment of the vessel for proper placement. Divers shall not be utilized as the primary means to determine vessel position or to monitor vessel position while dewatering.

7.1.10 Conduct a docking/undocking conference 24 hours prior to docking/undocking of the vessel. The conference will be attended by Ships Force and MSCREP Project Office personnel. The Contractor’s Dockmaster and supervisory personnel concerned with the docking/undocking evolution shall attend the conference.

7.1.10.1 Immediately prior to Dry-docking Conference, the Contractor’s Dockmaster shall furnish to the MSCREPs a written summary of the following conditions/information:

7.1.10.1.1 Tidal conditions including time high, low and slack tides

7.1.10.1.2 A minimum clearance of 12 inches of water between vessel’s keel and blocks during the docking evolution shall be maintained until vessel is properly centered and dewatering/deballasting has commenced.

7.1.10.1.3 Arrangements for Tugs and pilots, criteria for tug release after vessel positioning.

7.1.10.1.4 Assistance required from Ship’s force

7.1.10.1.5 Line handling arrangement, methods of centering vessel, use of divers.

7.1.10.1.6 Electrical grounding arrangement, when to transfer from ship to shore power, use of EDG, etc.

7.1.10.1.7 Communications arrangement between Dockmaster, Ship’s Master, Ship’s force, Tugs’ pilots and MSCREP during the docking/undocking evolution

7.1.10.1.8 Weather forecast for time of docking, criteria for postponing/suspending docking evolution due to weather conditions. Include go/no go criteria for postponing the docking evolution.

7.1.10.1.9 Any other pertinent and/or unusual conditions/factors affecting the docking/undocking evolution

7.1.10.1.10 Operating practices, safety requirements and shipyard security plans, including but not limited to: fire alarm locations, emergency power, and emergency ballast dewatering pumps.

7.1.10.1.11 Calculated list, trim and drafts of the vessel during docking, including required docking draft, draft at instability, draft at landing and when side blocks are to hauled (if applicable).

7.1.10.1.12 Any special precautions or actions characteristic to the docking facility, docked vessel, or a combination of the two.

7.1.10.1.13 Schedule of events, including block inspection and milestones of the docking evolution, i.e. sill crossing, landing, connect shore power, etc.

7.1.10.1.14 Listing of temporary services/hookups.

7.1.11 The Dockmaster and the MSCREP shall conduct a final inspection of blocking prior to flooding the dry dock. Provide inspection documentation showing relationship of blocking locations to sighting marks on dock coping, spacing, offsets, heights and shaping. Inform the MSCREP a minimum of 8 hours before starting the inspection. Contractor shall ensure that the blocks are properly set to clear plugs, openings and protrusions such as the underwater log, fathometer, docking plugs, etc. All measuring devices (tapes, rules, etc) required to conduct this inspection are to be provided by the Contractor. Any delay to docking schedule as a result of a failed block inspection is the responsibility of the Contractor.

7.1.12 Contractor shall retain control of the vessel in the centered position during the entire dewatering/deballasting evolution, as well as during flooding/ballasting operations while undocking to prevent damage to the vessel.

7.1.13 Once the vessel is on the blocks, but still waterborne, electrically connect the hull to connection points at the bow and stern, using minimum 1,000,000 circular Mils cables and ground connection in dry dock for protection against lightning and other static charges. The static ground leads shall be connected to the vessel before any Shore Power cables are energized.

7.1.14 Immediately after the vessel is dry-docked, inspect the fit on all blocks and provide necessary shimming between blocking and hull as a precaution against hull movement that may occur when ballast is removed or when the vessel’s loads are shifted. In the presence of the MSCREP, take soundings and record all readings of ballast, fuel oil, lube oil, oily waste and potable water tanks.

7.1.14.1 If the vessel is found to be off the centerline on the keel blocks more than six (6) inches, the Contractor shall re-dock the vessel and place the vessel on centerline position at no additional cost to the government.

7.1.15 After the vessel is dry-docked and the hull still wet, the Contractor shall wash down the vessel’s underwater hull, fittings, rudders, propellers and propulsion shafts with clean fresh water at minimum pressure of 2,500 PSI to assure the removal of dirt, slime, marine growth & fouling and other foreign substances.

7.1.15.1 Upon completion of the high-pressure water wash, the entire deck/basin of the dry dock shall be water washed or cleaned to remove silt, mud and debris which may have accumulated during docking. Cleaning should be accomplished before any repair work takes place to prevent potential contamination of the river silt, mud and debris.

7.1.15.2 Any and all costs to collect, treat and dispose of hull and dock wash waste water and associated debris shall be included in this work item.

7.1.15.3 The Contractor shall provide temporary services and equipment; such as lighting, staging and a man lift (with operator), in order to assist the MSCREP, Inspectors/Surveyors and U.S. Government technical consultants in the inspection of the underwater hull and freeboard.

7.1.16 Contractor shall perform all required work to properly care for and protect rudder stock bearing gland, propeller root blade flanges, propeller hub, and shaft seals from contamination by grit, paint, dirt and other contaminants.

7.1.17 When required, the Contractor is responsible for the removal of underwater hull drain plugs and openings and providing a numbering system to account any temporary plugs inserted into the underwater hull penetrations. All temporary and removed drain plugs openings and hull penetrations shall be replaced and restored to watertight integrity condition prior to undocking. The Contractor shall properly document and identify all drain plugs; openings and hull penetrations removed and submit a complete written report to the MSCREP. This report shall identify each drain plug, opening or hull penetration removed by size, type of service, location, and compartment number and compartment description.

7.1.18 Contractor shall assure the vessel is safely maintained while in dry dock. The Contractor shall maintain the vessel’s watertight integrity while the vessel is in dry dock to the maximum extent possible. When an area of shell plating removal makes temporary closure impracticable, the Contractor shall secure each vulnerable compartment in order to minimize potential damage to the extent permitted by the scope and urgency of the work.

7.1.19 Undock the vessel at a date and time mutually agreed upon by the MSCREP and the Contractor. Before undocking the vessel, ensure that the dry dock is free of all debris, blasting material and that all sea valves, shaft seals and other hull penetrations below full load draft are proven watertight by high pressure fresh water hose testing or other means acceptable by the MSCREP.

7.1.20 Prior to flooding of the dry dock for the undocking evolution, the Contractor and his supervisory personnel, together with the MSCREP and Ship’s Force, shall conduct a final inspection of the vessel to ensure that watertight integrity conditions are satisfied.

7.1.20.1 Just prior to flooding dry dock accomplish an inspection with the MSCREP to ensure the dry dock basin is free of all equipment, material, debris, blasting material, all underwater openings are clear, drain plugs installed, strainer gates/guards are installed and all hardware properly secured.

7.1.21 After completing all work and receiving approval, re-float the vessel. Flooding of the dry dock shall commence only when approved by the MSCREP and immediately after Paragraphs 7.1.19 and 7.1.20 have been completed and satisfied. Start the flooding; and stop the flooding of the dry dock after the hull penetrations are submerged, but before the vessel lifts off the blocks. Contractor shall visually inspect interior hull and hull penetrations below the water level with MSCREP to ensure the watertight integrity of the vessel. Flooding shall continue once watertight integrity is verified.

7.1.21.1 In the event leaks are found during the watertight integrity tests, the contractor shall be responsible to cease undocking operations and to restore conditions suitable to accomplish permanent repairs. Undocking may not continue until the MSCREP is satisfied that the leak(s) have been corrected.

7.2 Structural: None Additional

7.3 Mechanical/Fluids: None Additional

7.4 Electrical: None Additional

7.5 Electronics: None Additional

7.6 Preparation of Drawings/Documents

7.6.1 For modified blocking arrangements as approved per Para 7.1.5 of this Work Item, the Contractor shall prepare a shipyard specific Blocking Plan reflecting the approved modifications and changes. This drawing is NOT to have a NAVSEA drawing number as it is a one-time variation to the MSC Docking Plan provided as Reference 2.2. Drawings shall be prepared using Autocad Version 2004 or later with an electronic copy submitted to the MSCREP. Drawing shall be entitled:

USNS LEWIS AND CLARK

Modified Docking Plan for ______________ Shipyard Docking Dates: ______________

7.6.2 The Contractor shall prepare and provide the MSCREP with three (3) completed legible copies of reference 2.6.

7.7 Inspection/Test: None Additional

7.8 Painting: None Additional

7.9 Marking: None Additional

7.10 Manufacturer’s Representative: None Additional

8.0 GENERAL REQUIREMENTS

8.1 The term “hardwood” for the purpose of this Specification includes the following type of woods: White Oak, California Laurel, Oregon Myrtle, Iron Bark, Blue Gum, American Rock Elm or Preserved Red Oak.

8.2 Blocks showing evidence of excessive crushing, warping, cracking, rotting or damage from dogging and unequal shrinkage or deterioration to an extent of no longer being capable of supporting a prescribed load over full bearing areas are not acceptable and must be replaced.

8.3 The term “softwood” for the purpose of this Specification includes the following type of woods: Douglas Fir, Tamarack, Long Leaf Pine, Yellow Pine or Hemlock.

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