Amendment 0001 22R0045.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

This amendment will answer 24 questions and will modify Sections C0002, C105, C504 and C602. Corrected sections will be included in a "cut-and-paste" format. The effected sections will be corrected in the final award.

Additional answers to received questions, as w ell as possible additional corrections to Section C will be forthcoming.

All other terms, conditions, specifications and requirements remain the same.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 20

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912BU22R0045

X 9B. DATED (SEE ITEM 11)

26-May-2022

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO.

5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

17-Jul-2022

CODE

US ARMY ENGINEER DISTRICT, PHILADELPHIA

CONTRACTING DIVISION

WANAMAKER BUILDING

100 PENN SQUARE EAST

PHILADELPHIA PA 19107-3390

W912BU 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912BU22R0045

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

AMENDMENT 1

RFI Group 1

1. When is the question deadline to USACE?

a. USACE Response: Question deadline is 45 days prior to submission deadline, currently September 2, 2022.

2. The build specification outlines many technical requirements for dredge. In lowering risk to all bidding parties, propose streamlining the requirements listed.

a. Examples: 1.) Section C180 NOISE & VIBRATION lists meeting ABS Guide for Crew Habitability on Workboats, EM 385-1-1 and for the vessel to meet all ABS, USCG and SOLAS (IMO Noise Code) requirements. Propose providing the vibration and noise limits for the craft to meet vice pointing to multiple documents with conflicting values.

b. 2.)Section C405 CATHODIC PROTECTION lists meeting ABS Guidance Notes on Cathodic Protection for Ships and NAVSEA T9633-AT-DSP-010. Which requirement takes precedence?

c. USACE Response: Contract Paragraph C180 already includes a list of vibration and noise limits for individual spaces, no change. ABS requirements shall take precedence over NAVSEA for cathodic protection. Future conflicts will be determined by the Government as brought to the Government’s attention.

3. ABS MVR 3-1-2/3.5 requires for ships intended to operate in areas with low air temperatures [below –10°C (14°F)], the materials in exposed structures are to be selected based on the design temperature tD, to be taken as defined in 3-1- 2/3.7. ABS MVR 3-1- 2/3.7 provides a calculation for determining the lowest mean daily average air temperature in the area of operation. The coldest design temperature of 13.8F is critically required and cannot be revised to 14F?

a. USACE Response: Please see revised Contract Paragraph C002 with changed requirement for design temperature. Low temperature steel is not required on this procurement.

4. Propose listing a range in nautical miles (i.e. 1700 nautical miles) verse a proposed navigational route.

a. USACE Response: Contract Paragraph C002 already includes 1700 nautical miles as distance for mobilization from Philadelphia. Also see the list under Endurance Operating Profiles for information on operating profiles for fuel consumption.

5. Please provide an operational profile in hours to support requirement for endurance values.

a. USACE Response: Endurance operational profile is intended as 24-hour days for 18 calendar days each. Sailing condition percentages are based on 24-hour days.

Also see the list under Endurance Operating Profiles for information on operating profiles for fuel consumption.

6. There are numerous standards listed in build specification, but no directed relationship to discrete requirement. Propose eliminating standard unless specifically addressed as requirement. Example, how does the "Guide for Spectral-Based Fatigue Analysis for Vessels" relate to the build specification as no SFA notation is noted in ABS notation requirements.

a. USACE Response: Each standard listed in Contract Paragraph C003 is listed in individual contract paragraphs throughout Contract Section C. The Guide for Spectral-Based Fatigue Analysis for Vessels is included in Contract Paragraph C399 and SFA notation is not required to be obtained.

7. Personnel-rated cranes will significantly de-rate the performance of a crane and exponentially increase cost due to safety factors and redundancy. Does USACE intend to have a crane rating for both personnel and non-personnel lifts as to not over-margin the crane offering?

a. USACE Response: Personnel-rated cranes do not limit the performance of a crane during non-personnel lifts, and safety equipment for obtaining personnel-rated cranes is significantly less expensive on original construction than through modification of existing equipment. Contract Paragraph C455 requires that vessel cranes are built in accordance with API 2C which requires personnel handling in section 7.3.1.1 and personnel capacity is required on the load chart per section 8.2.1.1(h). The Government does not intend to change this requirement.

8. Does USACE intend to have additional environmental conditions for topside equipment?

a. USACE Response: The Government does not intend to add any requirements for equipment.

9. Supporting the local water mist system required over the main propulsion engines; can the 20 minute water source be assumed from the potable water capacity listed in C130?

a. USACE Response: The Government will accept the 20-minute water capacity to be included in the potable water tankage required in Contract Paragraph C130, however this shall be in addition to the required potable water for endurance operations as listed in Contract Paragraph C002.

10. Considering the visualization tools now available in 3D CAD and viewers in Phase I and II of design, would USACE consider eliminating the requirement for physical mockup required in Phase III (C255)?

a. USACE Response: The Government does not intend to remove this requirement.

11. Specification requires "12 knots, Shallow Water", shall bidders assume Sea State 0 environmental conditions?

a. USACE Response: Bidders shall not assume Sea State 0 in shallow water conditions. Bidders shall use the environmental conditions as listed in Contract Paragraph C002.

12. Propose listing "Diesel engines shall comply with 40 CFR Part 1042 emission standards" vice EPA Tier 4. There's currently no emergency diesel generators set, domestically sold at below 600ekw, that meets EPA Tier 4 (C602).

a. USACE Response: Please see revised Contract Paragraph C602.

13. "IMO International Convention for the Prevention of Pollution from Ships (MARPOL) 73/ 78 Annex VI" is listed as a standard, but we do not see IMO emissions certificates listed?

a. USACE Response: The Government does not intend to require IMO emissions certificates.

14. Is a Ship Energy Efficiency Management Plan (SEEMP) required to be submitted, per the contract, to a governing body?

a. USACE Response: SSEMP is not included in the Contract Solicitation and is not intended to be added.

15. C504 requires the use of double-walled centrifugal dredge pumps. Most vendors are noting the material science used in today's modern pumps does not require the legacy practice of jacketing the pump casing. Can the USACE confirm the requirement for double-walled dredge pumps.

a. USACE Response: Please see revised Contract Paragraph C504.

16. Question related to past performance. Would the construction of an approximate 500 foot

(Tug 125 FT, Barge 400 FT) Integrated Tug and Barge (ITB) vessel meet the USACE proposal requirement of providing a past performance citation that demonstrates the “Construction of a self-propelled ocean-going steel vessel over 200 feet in length” (Section L, Volume 2, Factor 4)? For added background information, the USCG has issued direction that an ITB of this configuration shall be treated as a single vessel. The USCG also requires ITBs to be built to the same construction standards and to satisfy the same inspection requirements as a typical self-propelled ocean going vessels as documented in the USCG reference library at https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/5ps/NVIC/1981/n2-81.pdf.

a. USACE Response: For the purpose of this evaluation, the Government will accept ocean going steel Integrated Tug and Barge vessels exceeding 200 feet in length as the “Construction of a self-propelled ocean-going steel vessel over 200 feet in length” per Contract Section L.

17. Section C601 requires "All piping exposed in unheated spaces or to the weather and carrying fluids that can freeze shall be electrically heat traced, except that the fire main piping..."Do the dredge piping and jet water piping systems that are exposed to weather require heat tracing?

a. USACE Response: Dredge and jet water piping systems do not require heat tracing.

18. In the last paragraph (L.2(iv)), first sentence regarding the Past Performance Questionnaire should Factor 4 be referred to in lieu of Factor 3?

a. USACE Response: This is correct.

19. Does price (Factor 6) factor into the award of a stipend? On page 424, section 6.

FACTOR 6 - Price is states in part "Proposals found to have an unreasonable price may be deemed to be unacceptable and may not receive further consideration." Whereas on page 426 item 2 it states in part "To receive consideration for a stipend, a rating of no less than "Acceptable" must be achieved for all non-price factors except past performance which must be rated other than "No Confidence." This last would suggest that price is not a condition of awarding a stipend. Please clarify.

a. USACE Response: Price will not be used to evaluate eligibility for stipend, only for evaluation of the proposal.

20. Solicitation defines "Length Overall: 320 feet or less" but does not define how maximum overall length is defined. Does it include bulwarks, pump-off fitting, fendering, appendages etc.?

a. USACE Response: Length Overall shall be defined as the length between the farthest fixed points from the forward end to the aft end. This shall include fendering and any equipment fixed to the vessel not generally removed during operation.

21. Section C105 requires "a raised foc'sle shall be provided to reduce deck wetness." If the vessel has a full length superstructure above the freeboard deck, is an additional foc'sle house required as well? In addition, please note typographical errors in this section:

"flair" should be "flare" and "shear" should be "sheer"

a. USACE Response: Please see revised Contract Paragraph C105.

22. Each lounge requires "support" for 15 persons but seating listed is for 7 persons. Please clarify what the term "support" for 15 persons means regarding the lounges.

a. USACE Response: Lounges shall have standing room suitable for 15 persons and seating as specified in their respective sections.

23. "No boundary of an oil tank shall be integral with the side plate or bottom plate of the hull, nor with the sloped side plates of the hopper." This does not specifically address oil tanks that have boundaries with the vertical side plates of the hopper, and therefore we assume that oil tanks are allowed to be contiguous with the vertical side plates of the hopper. Please confirm.

a. USACE Response: This is correct, oil tanks may be contiguous with the vertical side plates of the hopper.

24. Section states that "The Contractor shall employ ABS to review the vessel design and construction on behalf of the U. S. Coast Guard for compliance with Subchapter I and to issue an official Hull Number and the COI." We presume the intent is for the COI to be issued in accordance with NVIC 02-95, Change 3, The Alternate Compliance Program (ACP). Please confirm.

a. USACE Response: This is correct.

C002 VESSEL OPERATION AND PRIMARY REQUIREMENTS

A. GENERAL DESCRIPTION

The Medium Class Hopper Dredge (MCHD) to be designed and delivered under this contract will become part of the USACE Minimum Fleet and upon delivery will be placed in a Ready Reserve status. Ready Reserve means that the dredge will generally be kept dockside on shore power in a standby mode and be expected to be versatile in capability and quick to respond when called out for dredging.

The MCHD will complete 70 days of dredging in the Delaware River on an annual basis as its training and readiness exercise. The dredge will be utilized for channel maintenance dredging to supplement the capability of the commercial industry dredge fleet when circumstances dictate, and it is called upon.

The dredge will be home ported at the USACE Fort Mifflin dock facility on the Delaware River in Philadelphia. The dredge is anticipated to operate primarily on both the East Coast and Gulf Coast of the US. However, it may be utilized anywhere in the US, as needed, to include the West Coast but excluding the Great Lakes.

Ready Reserve Mission:

“Ready Reserve” status means the MCHD can be called upon by USACE Headquarters to conduct urgent or emergency dredging. Historically, the McFARLAND has been called out from Ready Reserve to dredge approximately 60 days per year.

The primary mission of this dredge is to respond to emerging issues affecting coastal navigation in the US called out for dredging. In that regard, the dredge is expected to be designed and built to allow very fast mobilization from the time requested to the time underway. Operations needed to transition from being on shore power at the dock to vessel underway in 72 hours or less.

Being a Ready Reserve dredge, the exact conditions, locations, and circumstances for its use are variable. As a result, versatility in the design is encouraged to maximize the number of potential situations that the dredge can support.

The overall goal for the dredge is to be able to support any condition for maintenance dredging that presents itself. It is understood that there may be some trade-off between “optimum” under specified conditions and “range of operation” under more extreme conditions.

Once in a dredging mode, the goal is to maximize production in terms of Cubic Yards of material removed. Production is based on a combination of hopper load and total cycle time.

USACE experience with their existing Ready Reserve fleet has identified features that contribute to better overall operation that include:

• Maximized hopper loading capacity with 1.8 S.G In Hopper material.

• Maximized dredge maneuvering control and dredging performance in high current and wind conditions as described in the specification,

• Propulsion and Steering systems that together maximize maneuvering power (with the inclusion of a Bow Thruster) and also provide rapid response to propulsion and steering inputs.

• Ease of maintenance and equipment replacement while in ready reserve dockside status,

• Minimized need for dry docking,

• Power System Redundancy and operational flexibility that precludes being completely out of service (operating at reduced dredging capacity until repairs are affected) when there are individual component breakdowns.

Current Ready Reserve Dredge Operating Profile (MCFARLAND):

For the purpose of Offeror background information about the existing operating profile of the vessel being replaced (MCFARLAND), the following dredging operations are provided based on historical use and situations considered most likely. However, it should be understood that actual usage may vary to include differing locations, dredging depth, material, distance to the disposal site, and potential upland disposal. Offerors shall utilize this information as the basis for the Operating Profile of the new dredge, in conjunction with the technical requirements in this solicitation:

Normal Dredging Cycle:

Arrive at dredging station, Dredge with or without overflow (see specific sites below), Transit to Disposal Site, Bottom Dump or Pump out upland (see specific sites below), Return to dredging station Primary Dredging Locations:

a. New Orleans District – Southwest Pass, sea buoy to Venice, lower 30 miles (30% of overall vessel dredging assignment time) [PRIMARY MISSION PURPOSE] Mobilization from Philadelphia – twice per year to New Orleans 1700 nautical miles and 1700 nautical miles back. The dredge will travel at transit speed with the hopper empty, but free flooded. Transit condition – fully stocked, full fuel, full potable water Dredging Material: Two primary locations conditions:

• At Head of Passes (sand)

• Lower part of SW Pass – sand with much more silt (lighter material)

• Minimal organics (both locations) Dredging Depth: 42 – 55 ft. (45 ft. starting channel depth, being dredged to 50 ft.) [See Specific Requirements Below] River Current – maximum 6 knot current Distance to Disposal Site

• Average of 4 miles to Head of Passes site one-way (shallow water) [8 Miles Round Trip]

• Average of 5 miles to site outside of sea buoy one-way (deep water) [10 Miles Round Trip] Type of Disposal - bottom dumping via hopper doors (need operational procedures to dump in shallow Head of Passes site; can almost touch bottom with loaded Dredge McFarland when site is near full – note that this site is emptied by re-handling with cutterheads to create capacity) Note: a large amount of time is spent maneuvering into and out of the disposal area and in dumping (material bridges) Condition: Turtle deflectors are in upper position during dredging (only the weight causes propulsive resistance) Environmental Considerations: Can overflow and in rare cases agitate by use of the overflows

b. Philadelphia District – Delaware River above Ship John Shoal (50% of dredging time) Mobilization from Philadelphia dock – 5 times per year within 50 miles and back each time. The dredge will travel at transit speed with the hopper empty, but free flooded. Transit condition – fully stocked, full fuel, full potable water Dredging Material: Varies between specific ranges in the river;

• sand and gravel [See specific requirements below]

• silt

• C&D canal (infrequent dredging) has some clay Dredging Depth: 36 to 47 feet River Current: 2-3 knots

Crosswinds: 15-20 knots Distance to Disposal Site – average 10 miles Type of Disposal – Pump-out to upland disposal sites (various river locations)

• Present Discharge pipeline – Submerged – 150 feet of 28-inch ID steel pipeline Shoreline – various length 29-inch ID steel pipeline

• Distances/Elevation Killcohook – 1.5 miles feet in length, 75-foot upward change in elevation Fort Mifflin (farthest cell) 8000 feet in length, minimal change in elevation

• Current time to Pump-out – varies with material; minimum 1 hour, maximum 4 hours [See Specific Requirements Below] Condition - Turtle deflectors are in place in deflector position during dredging (drag on bottom and weight causes resistance) Environmental Considerations – No overflow, hoppers pumped down before start of cycle; once dredging starts there is no overflow allowed

c. Philadelphia District – Delaware River below Ship John Shoal (10% of dredging time) Mobilization – 2 times per year, 80 miles and 80 miles back. The dredge will travel at transit speed with the hopper empty, but free flooded. Transit condition – fully stocked, full fuel, full potable water Dredging Material: Sand and gravel Dredging Depth: 38 – 47 ft.

Distance to Disposal Site - from 1.5 to 20 miles (average 10 miles each way) Type of Disposal - bottom dumping via hopper doors (deep water) Conditions: Turtle deflectors are required in deflecting position (resistance from both drag on the bottom and weight) Environmental Considerations - No overflow allowed (no discharge from start

d. Lower Eastern Atlantic Coast (10% of dredging time) Mobilization – 1 time per year – assume 600 miles and 600 back. The dredge will travel at transit speed with the hopper empty, but free flooded. Transit condition – fully stocked, full fuel, full potable water Geographic locations have tended to vary over the years Dredging Material: (typical sites)

• Morehead City –sand

• Wilmington Harbor, Cape Fear – (river mix –sand & shallow mud, slight organics) Dredging Depth:

• Morehead City (47 ft channel) - 28 to 48 feet

• Wilmington (similar) – 28 to 48 feet Distance to Disposal Site –

• Morehead City - 2 sites – offshore is deep - 8 miles, close site (1 mile) is shallow and sometimes unavailable (McFarland grounded on one occasion)

• Wilmington (ocean) - 10 miles (deep) Type of Disposal- bottom dumping via hopper doors (may need operational procedures to dump in relatively shallow sites depending on door extension below the hull) Current – maximum 3 knots along the track, 3.5 knot cross-current Crosswinds: 15-20 knots

Conditions: Turtle deflectors are in deflector position during dredging (resistance from both drag and weight) Environmental Considerations - Florida monitors for turbidity (shut down if too high) – a small boat follows – less than 10% of the operating time has been affected by turbidity

B. REQUIREMENTS

The Dredge shall be designed and built according to the specifications throughout this contract.

C. SPECIFIC REQUIREMENTS

The MCHD shall have the following characteristics:

Hull

a. Length Overall: 320 feet or less

b. Beam: As best suits the design

c. Air-Draft: 110 feet maximum

d. Loaded Draft at minimum dredging freeboard: 26 feet

e. Hopper & Loading Capacity: The hopper volume shall be 6,000 cubic yards to the top of the overflow, at maximum overflow height, at a minimum of 1.5 S.G. Dredge shall be capable of a hopper volume of 5,000 cubic yards at 1.8 S.G.

f. Power System: Diesel-Electric

g. Propulsion: Twin or Triple Screw Azimuthing Thrusters (Z or L-drive). Thrusters shall be removable and replaceable with vessel afloat and without dry docking.

h. Shallow Water: for transit conditions water depth shall be taken as 3 times the Loaded Draft

i. Speed (w/ 50% consumables, 100% fuel):

• Transit speed, hopper empty but free flooding, minimum 12 knots, Shallow Water.

• Transit speed, hopper full, minimum 10 knots, Shallow Water.

• Dredging speed (See 3. Machinery below under Propulsion)

j. Bow Thruster: at least one variable speed electric motor driven tunnel bow thruster.

k. Environmental conditions: Temperature criteria are as follows:

Philadelphia, PA Southwest Pass, LA Outside Air (cooling) 93.4 F DB, 75.1 F WB 92.8 F DB, 78.1 F WB Indoor Air (cooling) 75 F DB @ 50% RH 75 F DB @ 50% RH Indoor Air (heating) 75 F 75 F Outside Air (heating) 13.8 14 F DB 30.7 F DB Seawater Temperature (cooling) 80 F 85 F Seawater Temperature (heating) 37 F 61 F

l. Accommodation total of 26 persons and will have the following cabins, as a minimum:

• 8 x double cabins

• 6 x single cabins

• 2 x Ch. Eng. sleeping cabins

• Ch. Eng. day room/office

• 2 x Captain sleeping cabins

• Captain day room/office

• Hospital

• Galley

• Pantry

• Deck Department Office

• Engine Department Office

• Crew mess

• Officers mess

• Crew lounge

• Officer’s lounge

• Changing room

• Damage control locker

• Laundry

• Gym

• Provisions, hotel and linen stores

m. Range: Vessel range shall be sufficient for transit from Philadelphia to New Orleans, hopper empty but free flooding (with doors closed), at a transit speed of 12 knots, without refueling or resupply, with a reserve of at least 10% fuel and consumables. No boundary of an oil tank shall be integral with the side plate or bottom plate of the hull, nor with the sloped side plates of the hopper.

n. Endurance: Vessel must be able to operate without resupply or offloading of waste for a minimum of 18 calendar days for the following operating profiles;

o. Endurance Operating Profiles:

Profile 1:

• Normal sailing condition full draft @ 10 knots: 20% of time

• Dredging condition full draft @ speed over ground of 2 knots with a 6 knots counter current: 50% of time

• Vessel empty but hopper flooded @12 knots: 20% of time

• Idle vessel in harbor, not on shore power: 10% of time

• While on Endurance Operating Profile 1 the vessel shall also be able to operate in a No Discharge mode (no discharge of wastewater).

Profile 2:

• Normal sailing condition full draft @ 10 knots: 50% of time

• Normal sailing condition full draft @ 12 knots: 50% of time

• While on Endurance Operating Profile 2 the vessel shall also be able to operate in a No Discharge mode (no discharge of wastewater).

Profile 3:

• Dredging condition full draft @ speed over ground of 2 knots with a 6 knots counter current: 100% of time

• While on Endurance Operating Profile 3 the vessel shall also be able to operate in a No Discharge mode (no discharge of wastewater).

Dredging System

p. Drag arms: 2 drag arms, one each side, with drag heads that are equipped with water jets, adjustable visors, and removable turtle deflectors (See Contract Paragraph C510).

q. Dredging depth (reference to water surface) and dredging system optimization: 65 feet depth with drag arms at no more than 45 degrees from the horizontal at a light draft (hopper empty but free flooding). Maximum operating drag arm angle shall not exceed 55 degrees when dredging deeper than 65 feet. (See Contract Paragraph C502)

r. Dredge pumps: one inboard dredge pump per drag arm (See Contract Paragraph C504).

s. Loading time to fill hopper with 5000 cubic yards of 1.8 S.G. material to be between 45- 75 minutes when dredging at 65 ft. (See Contract Paragraphs C512, C516, and C520).

t. Dredge pump spherical clearance shall be a minimum of 12 inches

u. Sliding Trunnions (See Contract Paragraph C510)

v. Bottom dumping: multiple doors hydraulically actuated (See Contract Paragraph C514)

w. Bottom doors shall be designed such that the doors can be fully opened when the water depth is 1.75 times the mean draft of the vessel. For dumping in shallower waters, proportional opening of the doors shall be possible.

x. Pump Out: Over the bow through hose (Government supplied) and pipeline to landfill with a geodetic head of 75 ft, over a length of 1.5 miles in approx. 120-240 minutes. Dredge shall be capable of weathervaning off of a mooring buoy during pump out.

y. Hopper pump out collection system (See Contract Paragraph C520)

z. Hopper jetting system (See Contract Paragraphs C518, and C519)

aa. Drag heads shall be provided with water jetting (See Contract Paragraph C511)

bb. Overflow adjustable system and anti-turbidity features (See Contract Paragraph C516)

cc. Drag head turtle deflection system (See Contract Paragraph C511) Machinery

dd. A Diesel-Electric Power System shall provide power for all vessel operations.

ee. The diesel engines shall meet current US environmental emissions requirements (Tier 4).

Diesel engines shall run on ultra-low sulfur fuel.

ff. Diesel engines and the generators powered by the engines shall be rated for continuous power output.

gg. Distilling plant for making potable water

hh. Propulsion - Propulsion shall be twin or triple Screw afloat removable Azimuthing Thrusters (Z or L-Drives).

Thrusters shall utilize fixed pitch propellers with propeller nozzles. Propulsion shall utilize electric motors powered by the vessel Diesel-Electric system. Propulsion power shall be sufficient to dredge at maximum dredging depth in sand at maximum hopper fill rate, full hopper and maximum dredging draft, against a 6-knot current, with minimum dredging speed of 2 knots over ground (8-knots through the water). Power shall also be sufficient to meet 12 and 10 knot transit speeds given above.

A minimum of one variable speed bow thruster, sized to operate in conjunction with the propulsion system to allow the vessel to turn 180 degrees within its own length (in the water, not relative to land), at full load draft, with drag arms raised. (See Paragraph C620) The vessel Azimuthing Thruster System design, Bow Thruster System design, and related hull form features for each of the two systems should consider maneuverability to be equal in importance to transit performance.

ii. Dredging System- Inboard dredge pumps shall be used and sized for the hopper fill and hopper pump out rates given above.

Jetting pumps shall be used to supply a jetting system running to the drag head when dredging and to the lower hopper during pump out.

jj. Automation, Monitoring & Control System –

(i) Vessel – Shall have a machinery control, monitoring, alarm system that meets USCG periodically unattended machinery space and ABS Automation Centralized Control Unmanned (ACCU) requirements.

Dredging System –

Shall have a dredging automation system that has, at a minimum, the following capabilities and provides outputs in accordance with USACE’s Dredge Quality Management (DQM) program (see Contract Paragraph C524):

• Drag arm position sensing

• Hopper fill level sensing

• Overflow weir position sensing

• Hull draft sensing

• Hull speed over bottom sensing

• Hull speed through water sensing

• Vessel position and track sensing

• Production monitoring (velocity & density) sensing

• Dredge pump: RPM, inlet vacuum and discharge pressure sensing

• Jetting pump: RPM, inlet vacuum and discharge pressure sensing

• Automated drag head, dredge pump & overflow weir control for:

- Most efficient production

- Least turbidity production

- Fastest Hopper Fill production

- Draft limited production

- Pump Out pressure & velocity control

- Zero overflow locations

• Vessel Maneuvering control for:

- Dredge track keeping

D. STANDARDS

See Contract Paragraph C003.

C105 HULL GEOMETRY

GENERAL DESCRIPTION

The vessel shall be a round bilge monohull trailing suction hopper dredger designed for year-round maintenance dredging, at open sea and in busy waterways. Operational characteristics are further defined in Contract Paragraph C002. The hull form shall be designed and optimized for (twin or triple screw) Z-drive propulsion in shallow water during both dredging and free sailing operations.

REQUIREMENTS

The vessel’s principal characteristics shall be according the characteristics as defined in Contract Paragraph C002.

The Contractor shall develop and submit a hull lines plan and table of offsets (849-C105-01 HULL LINES & OFFSETS) to the COR during Phase II of the contract for review and approval.

The Contractor shall develop a GHS geometry file of the hull in accordance with the requirements of Contract Paragraph C101

SPECIFIC REQUIREMENTS

A raised focsle or other superstructure shall be provided to reduce deck wetness. The shape above the DWL shall have moderate flair flare to avoid wave slamming in bad weather. Bow bulbs are acceptable.

The midbody section shall have a round bilge and the hull sides (P/S) shall be as straight as practical (no shape).

The aft body shall be designed and optimized for the selected Azimuthing Thruster propulsion system, and for good maneuverability during dredging operations.

The hull shall be optimized for shallow water operation. Shallow water shall be taken as defined in Contract Paragraph C002. Special attention shall be given to assuring sufficient water flow to the propellers in shallow water at both transit speed and dredging speed.

The main deck shall have minimal forward shear sheer.

The upper deck shall have minimal camber.

The house top shall be sloped aft.

SPECIAL FEATURES

None.

DELIVERABLES

849-C105-01 HULL LINES & OFFSETS

STANDARDS

C504 DREDGE PUMPS

The Contractor shall furnish two, identical, same hand, single-suction, double-walled centrifugal pumps best suited for the operational conditions as described in Contract Paragraph C002.

Pumps may be of either double-walled or single-walled configuration.

Each dredge pump shall be provided with a drive system as required in Contract Paragraph C506.

REQUIREMENTS

The dredge pumps shall have a flowrate and head optimized for the operational conditions described in Contract Paragraph C002. The dredge pumps shall at all times operate as close to the best efficiency point as possible. The dredge pumps shall be designed to avoid cavitation while pumping a high concentration of dredged material. The dredge pumps shall have sufficient sphere passage to meet the operational conditions listed in Contract Paragraph C002.

The pumps shall be installed in a way that leaking does minimal damage to other equipment. The dredge pumps shall be installed, aligned with the gears, and secured to the foundations in accordance with the manufacturer and regulatory body requirements.

The dredge pump system shall be arranged as follows for loading and offloading:

Loading: One dredge pump shall provide suction for each dragarm.

Offloading: The dredge pumps shall be capable of working in series to offload from the hopper to the bow discharge.

For redundancy (see Contract Paragraph C002), if one of the dredge pumps is offline, it shall still be possible to dredge with either dragarm. Offloading shall also be possible with one of the pumps offline.

The single piece inner pump casing, impeller and renewable head liners shall be of highly abrasion resistant alloy. Both the impeller and the casing shall be suited for moderate impact loads. The dredge pump bearing assembly shall consist of anti-friction type bearings capable of handling radial forces and axial forces in both directions. A dedicated bearing lube oil system shall be supplied by the pump manufacturer. The bearing temperature should be controlled to keep it within the limits of the oil and bearings.

The dredge pump shaft shall be of high strength alloy steel. The pump shaft mechanical seal shall be easily replaceable and easily maintainable. The shaft seal shall be connected to the dredge pump flushing system as described in Contract Paragraph C505.

The dredge pump shaft seal shall be chosen to meet the following requirements:

Suitable for use in an environment with abrasive material.

Prevent soil mixture from entering the seal and causing premature failure Suitable for high axial and radial movement including vibrations and shock loads normal for dredging operations.

The impeller shall be attached in such a manner as to allow removal through the suction-side head. Lifting gear and pad eyes shall be provided for removing the impeller, wear plates and pump casing in accordance with Contract Paragraph C290.

The Contractor shall develop 849-C504-01 DREDGE PUMP CURVES, 849-C504-02

GENERAL ARRANGEMENT DRAWING OF PUMPS, 849-C504-03 MATERIAL

SPECIFICATION OF WEAR PARTS (LINER, IMPELLER, VOLUTE), 849-C504-04 PUMP

PART DIMENSIONS, 849-C505-05 DREDGE PUMP SHAFT SEAL SPECIFICATION, and

849-C505-06 DREDGE PUMP SHAFT SEAL ASSEMBLY DRAWING during Phase II of the Contract and submit to COR for review and approval.

SPECIFIC REQUIREMENTS

Each dredge pump shall include the following inspection opening and valve necessary to create a complete and functional dredge pump assembly.

An inspection piece with top-opening clean-out connection shall be installed at the suction line near each dredge pump. The bottom surface of the opening cover shall be shaped to smoothly match the pipe cut-out to minimize turbulence at the dredge pump suction inlet.

A hydraulically operated, knife type, gate valve shall be provided in the suction line to prevent flooding of the pump room during dredge pump cleanout and maintenance operations. The valve shall be furnished with a connection to enable flushing of sand and silt from its seat. Flushing of this valve may be provided by the dredge pump flushing system (see Contract Paragraph C505) or the raw water system (see Contract Paragraph C640). The Contractor shall ensure that the water provided to the valve for flushing meets the quality standards of the valve manufacturer.

SPECIAL FEATURES

None.

DELIVERABLES

849-C504-01 DREDGE PUMP CURVES

a. Flow versus head

b. Flow versus efficiency

c. Flow versus net positive suction head required

849-C504-02 GENERAL ARRANGEMENT DRAWING OF PUMPS

849-C504-03 MATERIAL SPECIFICATION OF WEAR PARTS (liner, impeller, volute)

849-C504-04 PUMP PART DIMENSIONS

849-C504-05 DREDGE PUMP SHAFT SEAL SPECIFICATION

849-C504-06 DREDGE PUMP SHAFT SEAL ASSEMBLY DRAWING, including parts list 849-C504-07 MANUAL FOR MAINTENANCE including needed equipment

C504 DREDGE PUMPS

The Contractor shall furnish two, identical, same hand, single-suction, double-walled centrifugal pumps best suited for the operational conditions as described in Contract Paragraph C002.

Pumps may be of either double-walled or single-walled configuration.

Each dredge pump shall be provided with a drive system as required in Contract Paragraph C506.

REQUIREMENTS

The dredge pumps shall have a flowrate and head optimized for the operational conditions described in Contract Paragraph C002. The dredge pumps shall at all times operate as close to the best efficiency point as possible. The dredge pumps shall be designed to avoid cavitation while pumping a high concentration of dredged material. The dredge pumps shall have sufficient sphere passage to meet the operational conditions listed in Contract Paragraph C002.

The pumps shall be installed in a way that leaking does minimal damage to other equipment. The dredge pumps shall be installed, aligned with the gears, and secured to the foundations in accordance with the manufacturer and regulatory body requirements.

The dredge pump system shall be arranged as follows for loading and offloading:

Loading: One dredge pump shall provide suction for each dragarm.

Offloading: The dredge pumps shall be capable of working in series to offload from the hopper to the bow discharge.

For redundancy (see Contract Paragraph C002), if one of the dredge pumps is offline, it shall still be possible to dredge with either dragarm. Offloading shall also be possible with one of the pumps offline.

The single piece inner pump casing, impeller and renewable head liners shall be of highly abrasion resistant alloy. Both the impeller and the casing shall be suited for moderate impact loads. The dredge pump bearing assembly shall consist of anti-friction type bearings capable of handling radial forces and axial forces in both directions. A dedicated bearing lube oil system shall be supplied by the pump manufacturer. The bearing temperature should be controlled to keep it within the limits of the oil and bearings.

The dredge pump shaft shall be of high strength alloy steel. The pump shaft mechanical seal shall be easily replaceable and easily maintainable. The shaft seal shall be connected to the dredge pump flushing system as described in Contract Paragraph C505.

The dredge pump shaft seal shall be chosen to meet the following requirements:

Suitable for use in an environment with abrasive material.

Prevent soil mixture from entering the seal and causing premature failure Suitable for high axial and radial movement including vibrations and shock loads normal for dredging operations.

The impeller shall be attached in such a manner as to allow removal through the suction-side head. Lifting gear and pad eyes shall be provided for removing the impeller, wear plates and pump casing in accordance with Contract Paragraph C290.

The Contractor shall develop 849-C504-01 DREDGE PUMP CURVES, 849-C504-02

GENERAL ARRANGEMENT DRAWING OF PUMPS, 849-C504-03 MATERIAL

SPECIFICATION OF WEAR PARTS (LINER, IMPELLER, VOLUTE), 849-C504-04 PUMP

PART DIMENSIONS, 849-C505-05 DREDGE PUMP SHAFT SEAL SPECIFICATION, and

849-C505-06 DREDGE PUMP SHAFT SEAL ASSEMBLY DRAWING during Phase II of the Contract and submit to COR for review and approval.

SPECIFIC REQUIREMENTS

Each dredge pump shall include the following inspection opening and valve necessary to create a complete and functional dredge pump assembly.

An inspection piece with top-opening clean-out connection shall be installed at the suction line near each dredge pump. The bottom surface of the opening cover shall be shaped to smoothly match the pipe cut-out to minimize turbulence at the dredge pump suction inlet.

A hydraulically operated, knife type, gate valve shall be provided in the suction line to prevent flooding of the pump room during dredge pump cleanout and maintenance operations. The valve shall be furnished with a connection to enable flushing of sand and silt from its seat. Flushing of this valve may be provided by the dredge pump flushing system (see Contract Paragraph C505) or the raw water system (see Contract Paragraph C640). The Contractor shall ensure that the water provided to the valve for flushing meets the quality standards of the valve manufacturer.

SPECIAL FEATURES

None.

DELIVERABLES

849-C504-01 DREDGE PUMP CURVES

a. Flow versus head

b. Flow versus efficiency

c. Flow versus net positive suction head required

849-C504-02 GENERAL ARRANGEMENT DRAWING OF PUMPS

849-C504-03 MATERIAL SPECIFICATION OF WEAR PARTS (liner, impeller, volute)

849-C504-04 PUMP PART DIMENSIONS

849-C504-05 DREDGE PUMP SHAFT SEAL SPECIFICATION

849-C504-06 DREDGE PUMP SHAFT SEAL ASSEMBLY DRAWING, including parts list 849-C504-07 MANUAL FOR MAINTENANCE including needed equipment

C602 DIESEL ELECTRIC SYSTEM GENERATORS

The Contractor shall provide and install marine diesel generators. A single engine manufacturer and where possible same type and model are to be used for all diesel generators.

REQUIREMENTS

Engines shall meet the most current US EPA (Tier 4) exhaust emission standards that is applicable for their power level.

Each engine shall be provided with the manufacturer’s standard equipment as well as the following features and options:

a. Equipped with full authority electronic computer-controlled fuel injection systems.

b. Type approved by ABS.

c. EPA Emission Tier 4 Certified. See below for aftertreatment requirements (if required).

d. Mounted on resilient vibration isolators with limit stops.

e. Dry Exhaust.

f. Lined, stainless steel, multiple exhaust flexes on engine exhaust output flanges.

g. Torsional output coupling with flange.

h. Closed crankcase vent system. The system shall be supplied with a manometer and the drain line shall be returned directly to the engine oil sump, below the oil level.

i. Each engine turbocharger and exhaust manifold shall be insulated or jacketed to maintain an outer skin temperature of less than 125-degrees F.

j. Automatic safety shutdown in accordance with ABS Rules.

k. Engine mounted fuel oil pumps.

l. Fuel oil duplex filters.

m. Lube oil filters.

n. Engine or electric driven main lubrication pumps.

o. Cooling water system as described in Contract Paragraph C640, including electric jacket water heater(s).

p. Electric pre-lube oil pumps, including pre-heating system if required.

q. The cooling water, lube and fuel lines to all engine connections shall be fitted with USCG and ABS approved flexible connections.

r. Each main engine oil sump shall be fitted with a valve and a, preferably hard-piped connection so that oil can be drawn from the sumps.

s. Provided with a full-length drip pan or a recess in the structure of the vessel, under the engine (see Contract Paragraph C330).

t. Electric turning gear, if applicable.

u. Control and monitoring system in accordance with Contract Paragraph C780.

v. Each engine shall be supplied with lifting eyes (as further described in Contract Paragraph C290) and mounting support. The Contractor is responsible for supplying suitable foundations for the engines (see Contract Paragraph C330).

w. The fuel rate of the main engines shall be compared to the original factory performance specifications during the vessel’s test and trials. This comparison shall be made for the entire operating range of the engines by a representative of the engine manufacturer using instrumentation to acquire real-time fuel rate and engine output.

x. Four (4) printed sets of operating, maintenance, and parts manuals and four (4) electronic (DVD/ CD) sets shall be supplied for the engines. See Contract Section H, Paragraph H16.

y. Two (2) industrial-rated laptops installed with manufacturer’s software plus any required adapters and cables. Intent of laptop shall be to minimize need for local presence of manufacturer technician in case of engine issues.

z. Spare parts in accordance with Contract Paragraph C800.

SPECIFIC REQUIREMENTS

Generator Starting/Stopping Each generator engine shall be provided with an air starting system. All components of the starting system shall be ABS approved.

Emergency engine shutdowns shall be supplied in accordance with ABS Rules. Normal operation shall be resumed only after manual reset of the emergency shutdowns. No automatic restarting is allowed after activation of the emergency shutdowns. All emergency shutdown buttons shall be provided with guards to prevent accidental activation.

Engine Instrumentation & Alarms The vessel shall be assigned the ABS Maltese Cross Automatic Centralized Control Unmanned (ACCU) notation. The engine instrumentation and alarm system shall satisfy the requirements of the ACCU notation. The remote control and monitoring system shall be assembled, tested, and installed under ABS survey.

The Contractor shall supply and install the standard, local instrumentation panels, including controls, alarms, and monitoring, supplied by the engine manufacturer. The engine local instrumentation panels shall be mounted close to or on the engines.

Diesel engines instrumentation and alarms shall be connected to the vessels Integrated Monitoring, Alarm, and Control System (see Contract Paragraph C780).

Exhaust Aftertreatment If required to meet emission standards, the Contractor shall provide and install an aftertreatment exhaust system, appropriately sized for the engines, and supplied by the engine manufacturer.

The system shall be engine mounted or located in the funnel. All maintenance items, including catalyst filters/ cabinets, shall be easily accessible and maintained.

The Contractor shall provide one or more diesel exhaust fluid (DEF) storage tank(s) with a volume as prescribed by the engine manufacturer (approximately 10% of the fuel storage capacity). The tank(s) shall have all of the features and components required for a fuel oil storage tank, including a remote reading electronic tank level. See Specification Section C130 and C630.

All pumps, piping, filters, fittings and equipment to transfer DEF from the storage tank(s) to the aftertreatment unit shall be provided and installed. Materials used in the system (including the storage tanks) shall be compatible with the DEF, and shall not corrode when filled with DEF.

The pump(s) shall be setup for automatic and manual operation. Manual controls shall be at the pump. Automatic operation shall be based on tank level and engine operating status.

The exhaust after treatment shall be fully functional, installed in accordance with the engine manufacturer’s requirements, and calibrated and certified for use by the engine manufacturer.

See Contract Paragraph C650 for additional engine exhaust requirements and deliverables.

Requirements for generators in diesel generator sets are described in Contract Paragraph C733.

SPECIAL FEATURES

None.

DELIVERABLES

849-C602-XX Diagrams of all integrated engine systems, with numbered/ sized connections for integration with the ships system.

IMO International Convention for the Prevention of Pollution from Ships (MARPOL) 73/ 78 Annex VI 40 CFR, Part 1045, Control of Emissions from Spark-Ignition Propulsion Marine Engines and Vessels 46 CFR, Part 58, Main and Auxiliary Machinery and Related Systems

(End of Summary of Changes)