Amendment 003 22R0045 Repl Dredge (draft).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

Amendment 0003 :

1. RFI's 68-85

2. Revisions to Sections: C002, C130, and C665.

3. Instructions for PIEE Registration (attachment) Corrected sections w ill be included in a "cut-and-paste" format. The effected sections will be corrected in the final award. 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

05-Aug-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 3

RFI Group 3

68. Solicitation requires "Loaded Draft at minimum dredging freeboard: 26 feet" We believe that this requirement is intended to state the maximum draft allowed is 26 feet, but this statement could also be interpreted to mean that the loaded draft is required to be 26 feet and cannot be more or less. Please clarify.

a. USACE Response: Please see revised Contract Paragraph C002.

69. Solicitation requires endurance to meet three operational profiles. Profile 3 requires 18 day endurance with "Dredging condition full draft @ speed over ground of 2 knots with a 6 knots counter current: 100% of time". This appears to be both unrealistic (vessel cannot dredge 100% of an 18 day mission without dumping) and by our initial calculations could require the vessel to carry as much as 60% more fuel than the other operational profiles or the range requirement. We recommend that USACE review this profile and confirm that this condition is a reasonable requirement.

a. USACE Response: Please see revised Contract Paragraph C002.

70. Regarding Contract Paragraph H13:

a. It is the offerors understanding that section (a) statement regarding government intent related to technical data applies to all technical data – whether developed in the performance of this contract entirely at government expense, or developed partially or completely at private expense?

b. For commercial items -such as valves and pumps - that are modified to meet the specific requirements of the solicitation, is our understanding correct that these would be covered by the “not developed at government expense” exception?

c. Is our understanding that “government purpose” rights are defined as (i) non-transferable and non-sublicensable, (ii) non-exclusive and (iii) personal, right to use the technical information, directly supplied by manufacturer as part of the work, solely to the extent necessary to maintain, operate and repair the vessel and parts thereof to be built by the application of the design and engineering packages developed by manufacturer under the agreement and for no other purpose?

d. For technical items that do not meet the definition of “developed in the performance of this Contract”, can the original title blocks and identifying data be retained along with the addition of appropriate data rights markings?

e. USACE Response: The Government does not intend for the Contractor to obtain technical rights or intellectual property for commercially fabricated items;

however, the Contractor shall provide sufficient technical data of equipment and systems to validate contract requirements and to support future maintenance, repair, and modification of the dredge for the life of the dredge.

71. “All items shall be suitable for ocean service and meet the latest requirements of standard specifications published by National Agencies.”

a. Can the USACE further elaborate on ‘all items shall be suitable for ocean service’ as this could be interpreted as working/operating in arctic/icy waters which would require significant design changes. Is the fact that the dredge will be build according to the Specifications with ABS Class and Coast Guard approvals enough to satisfy the above requirement?

b. Does the phrase “standard specifications published by National Agencies” include recognized international and European standards (IEC, EU, etc.)?

c. USACE Response: Ocean service is defined per the operational area described in Contract Paragraph C002, Arctic conditions are not required for this vessel.

“National” in this solicitation is the United States of America.

72. Regarding Contract Paragraph C519 and C620:

a. The two main parts of a Variable Frequency Drive (VFD) are the rectifier and the inverter. These parts are available as an integrated version, but also as individual components. Is there any requirement that components of a VFD all be housed in a single enclosure or cabinet, or are other suitable arrangements/configurations acceptable? Similarly, is there any restriction on housing multiple VFD drives in a single cablnet/enclosure?

b. USACE Response: This Solicitation does not have specific requirements for how the VFDs are to be packaged, configuration is to be determined by the Contractor’s design.

73. Examination of EM 385-1-1, Section 19, Floating Plant and Marine Activities, finds that the document provides for some generic safety guidelines. This contractor has examined the solicitation in detail, and while the word "safety" is mentioned in many paragraphs and references, no requirement for a System Safety Analysis can be found. Is a System Safety analysis of the proposed dredge required?

a. USACE Response: This Solicitation does not require a “System Safety Analysis” unless mandated by the regulatory process. Safety requirements are addressed through the regulatory process, the USACE Safety Manual (EM 385-1-1), and through the various standards referenced throughout this solicitation.

74. To ensure timely submittal of our proposal for the Medium Class Hopper Dredge Replacement, can you please verify if PPQ issued with the 2020 solicitation, U.S. Army W912BU21R0001, is the correct PPQ for use on the current solicitation, U.S. Army Solicitation W912BU22R0045?

a. USACE Response: See updated attachments for PPQ form in Amendment 0002.

75. The link provided for the PIEE Solicitation Module Vendor Access Instructions is no longer working. It states the website has moved and routes to a new site but not directly to the .pdf instructions. Can the USACE please provide the .pdf referenced? What is the process if the Proposal Manager submitting the offer to the solicitation does not have an email address on file in SAM.gov?

a. USACE Response: See updated attachments for .pdf instructions. Proposals shall be submitted through SAM.gov per the solicitation in Amendment 0003.

76. C315 states in part "The bridge top shall be provided with a visor on all sides. The visor shall extend a minimum of 4” above the bridge top to form a toeboard. See Contract

Paragraph C425." C425 states "For the House Top, a 4-inch toeboard shall be provided all around except in way of the vertical ladder."

a. Question: If the visor is of sufficient height and also is topped with a rail such that the total height is 39.5" can the toeboard and safety clips be eliminated? Is an exterior stair an acceptable alternative to the vertical ladder to access the House Top?

b. USACE Response: Per Contract Paragraph C315 and C425 the visor shall extend above the bridge top to act as the toeboard on the bridge top, and all safety requirements for fall protection shall be provided per EM 385-1-1. Exterior stair shall not be provided to the bridge top due to obstruction of operator visibility and the infrequent requirement for access to the bridge top.

77. Can the USACE confirm if the Launch Boat as described in Section C446 has to be compliant with the Jones Act.

a. USACE Response: This is correct.

78. C690 states that "There shall be a normally-closed cross-connect line between the two system for use in emergency situations." Is the intention that the service compressor and/or air receiver have the same capacity as the starting air?

a. USACE Response: Ship service air compressors do not need to have the same capacity as the starting air compressors per ABS Rules. Cross-connect line is intended to be used only in case of emergency, primarily if the two redundant air compressors and receivers in the starting air system are inoperable.

79. C002 C gg. Requires a distilling plant for making potable water. C130 Requires Contractor to include a minimum consumption of 60 gallons of potable water, per person per day. Question: Can the distilling plant production be included in the calculation of potable water tank capacity? For example, if two 1200 gallon/day distilling plants were installed, one as 100% backup, could the 1200 gallon per day production be utilized to correspondingly reduce the potable water tank capacity. This is asked because, otherwise, the potable water tank(s) would be roughly 30,000 gallons, extremely large for a vessel of this size and expensive due to its stainless steel material and separation from all other tankage and the hull.

a. USACE Response: No. Potable water tank capacity shall meet endurance requirements from Contract Paragraph C002. Fresh water generators shall be sized to make up potable water daily consumption per Contract Paragraph C002.

Please see revised Contract Paragraph C665 for clarification.

80. Question: Given that numerous coatings manufacturers offer NSF certified coatings for steel potable water tanks, can one of these coatings be substituted for stainless steel.

a. USACE Response: Coatings shall not be used in lieu of stainless-steel potable water tank requirement.

81. Question: If the potable water tank size is reduced according to our question #79, we assume the combined net capacity of the GW and BW tanks would still need to equal or exceed the size of the PW tank total consumption, not size. Please confirm.

a. USACE Response: Grey water and Black water tanks shall be sized based on consumption, please see revised Contract Paragraph C130 for clarification.

82. Section C001.A, page 7 first bullet point: "Maximized hopper loading capacity with 1.8 S.G In Hopper material." Please confirm that the 1.8 hopper s.g. referred to here and elsewhere in the document is the hopper bin density after loading, rather than an insitu or pumping density. Similar for the 1.50 s.g. at the 6000 CY hopper level (e.g. page 11, Specific Requirements item e.).

a. USACE Response: All specific gravity references in the solicitation (unless otherwise noted) are referring to the specific gravity in the hopper after loading.

83. Section C002, Page 9, Working Profile Philadelphia District – Delaware River above Ship John Shoal: "Present Discharge pipeline – Submerged – 150 feet of 28-inch ID steel pipeline Shoreline – various length 29-inch ID steel pipeline" Are the discharge pipeline diameters fixed, or can the offeror propose alternate-sized discharge pipe if it better fits the pump design?

a. USACE Response: Submerged discharge pipeline is intended to remain as it is currently as described in the Solicitation. Dredge discharge floating hose shall be capable of connecting to the 28-inch ID steel piping.

84. Section C524, page 187, Density Meters: "Non-nuclear density meters shall be tested prior to installation by comparing their accuracy to nuclear density meters" Presumably such tests by the manufacturer will be acceptable?

a. USACE Response: Manufacturer testing is acceptable for this requirement.

85. How many monitors are required for the Dredge Automation Camera System as described in Section C524?

a. USACE Response: Contractor shall provide a sufficient number of monitors in order to satisfy the requirements of the Contract Paragraph C524 “to accurately monitor and control the dredge system, and to allow for dredging operations to be controlled by one person.”

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: Not more than 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 Mission Profile;

o. Endurance Operating Mission Profile:

The Endurance Operating Sequence over the 18-day period shall be as follows:

• Transit from Philadelphia to Gulf Coast Dredge Site at mouth of Mississippi River, (1700 Nautical Miles) followed by

• Dredging Operations at the Dredge Site.

Return trip to Philadelphia is not included in Endurance profile. Vessel will refuel, reprovision, and pump holding & oily water tankage before return to Philadelphia.

The vessel Departure Condition at the beginning of the 18-day period, and the Mission Complete condition at the end of the 18-day period are as follows:

Departure Condition:

Full crew, full consumables water and fuel. 5% fill level in holding and oily water tankage, hopper doors closed, hopper free-flooded with seawater. Note that hopper door seals are not considered to be 100% watertight, so hopper free-flooded level equalizes with vessel draft over the transit distance.

All oily water will be stored in the vessel oily water holding tank.

Mission Complete Condition:

Full Crew, Minimum 10% capacities remaining on board for: consumables, water and fuel.

Maximum 95% capacity amounts on board for: black & gray water, holding, and oily water Hopper free flooded.

Description of the two sequence operations is as follows:

Transit to Dredge Site:

Transit to Dredge Site is as follows: Starting with vessel in Departure Condition, transit from Philadelphia to Gulf Coast Dredge Site at mouth of Mississippi River, (1700 Nautical Miles) at 11 Knot average speed, with 3-foot significant wave height. Transit is 24 hour-continuous operation. Transit duration is approx. 6.5 days.

Dredging Cycle Operation at Dredge site:

Upon arrival at the dredge site, vessel will conduct Dredge Cycle operations for the remainder of the 18-day endurance, approximately 11.5 days. Within the 11.5-day total, the vessel will be idle in harbor (not dredging or moving) at anchor for approximately 1.5 days.

All black and gray water generated over the Dredging Cycle Operation will be stored in vessel holding tanks with no overboard discharge. All oily water will be stored in the vessel oily water holding tank with no overboard discharge.

Vessel condition at the start of Dredging Cycle operations is hopper free flooded, and fuel, consumables and oily water as remaining on board on arrival at the dredging site.

The dredge cycle operation consists of four activities: Hopper Fill, Transit to Dump Site, Hopper Jetting & Dumping, and Transit back to Dredge Site. Dredging Cycle operations repeat sequentially, and the Dredging Cycle is 24 hour-continuous operation.

Description of the Dredging Cycle activities is as follows:

Hopper Fill –

Significant wave height 2 feet.

Dredging with drag arms down, in 55-foot water depth, with vessel speed of 2 knots over ground against 6 knot current.

Vessel condition at start of each hopper fill is hopper free flooded. Vessel condition at end of each hopper fill is hopper at max capacity with 1.8 SG material in hopper.

Time to fill hopper to be provided by proposer based on proposer’s dredge system pumping rate, and Contractor’s maximum 1.8 SG hopper capacity.

Transit: Dredge Location to Dump Site - Significant wave height 2 feet.

Drag Arms Raised Full Hopper Load:

Transit 5 Nautical Miles at 10 knots.

Hopper Jetting & Dump Time Significant wave height 2 feet.

Drag Arms Raised Slow (2 Knots) maneuver to stay within dump area while jetting & dumping, 30 minutes.

Transit: Dump Site Back to Dredge Location - Significant wave height 2 feet.

Drag Arms Raised Free Flooded hopper Transit 5 Nautical Miles at 12 knots

While on the Endurance Operating Mission Profile 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.

C130 TANK CAPACITIES

GENERAL DESCRIPTION

None.

REQUIREMENTS

The Contractor shall prepare drawing 849-C130-01 CAPACITY PLAN during Phase II of the Contract for submittal to the COR and regulatory bodies for review and approval.

The Capacity Plan shall show the location of all tanks on an arrangement clearly indicating the ID, purpose, net volume, longitudinal CG, vertical CG, transverse CG and start/end frame of each tank.

A “deadweight scale” or “loading scale” shall be added to the Capacity Plan including the deadweight, displacement, moment to alter trim, TPI and KMt of the vessel for drafts ranging from 6’ above base to the deck edge.

The Contractor shall prepare drawing 849-C130-02 TANK CAPACITY TABLES and 849- C130-03 HOPPER CAPACITY TABLES during Phase II of the Contract for submittal to the COR and regulatory bodies for review and approval. Tank capacity tables shall include a complete list of operational fluids for selected equipment.

The Hopper- and Tank capacity tables shall be provided for all tanks and trim ranges that cover all expected loading conditions with 1-foot trim increments. For the Hopper capacity tables, cubic yards shall be used; for all other tanks, gallons shall be used. The tables shall be presented in tabular form with no more than one tank per page on 8 1/2” x 11” paper. Each table shall include the identity of the tank (as labeled on the Capacity Plan), its location in the vessel, the location of the sounding tube or reference point, volume, weight, Free Surface Moment (FSM), and the center of gravity (longitudinally, vertical and transversely) of the fluid at each sounding level.

The Contractor shall update the tank and hopper capacity tables to reflect the final as-built condition. All stability documentation and the stability program shall be updated to reflect the final as-built tank capacities. The Contractor shall be responsible for submitting the updated documents to the COR and regulatory bodies for review and approval prior to sea trials.

The Hopper Capacity Tables shall be updated with the results from laser scanning of the as-built hopper. Laser-scanning shall be in accordance of Chapter 2, section 8A of the API Manual of Petroleum Measurement Standard. The Contractor shall be responsible for submitting the updated documents to the COR and regulatory bodies for review and approval prior to sea trials.

SPECIFIC REQUIREMENTS

The minimum net tank capacities shall be based on continuous operation of the vessel for the duration specified in Contract Paragraph C002.

The Contractor shall develop 849-C130-04 CONSUMABLES CALCULATION and submit to the COR for review and approval during Phase II of the project. The calculations shall include, for all consumable tanks, the expected consumption/production per day and the resulting size.

For Portable Water the Contractor shall include a minimum of 60 gallons per person per day.

The Black Water Holding Tank and the Grey Water Holding Tank shall have a combined net capacity greater or equal to the consumption of the potable water system as detailed in Contract Paragraph C002.

The net capacity of the Service and Waste Oil Tanks shall be based on the consumption of the machinery, and shall be sufficient for at minimum two (2) oil changes for all consumers.

The net Fuel Oil Capacity shall be based on the consumption of the main and auxiliary engines while conducting the endurance operations as specified in Contract Paragraph C002 for a duration specified in Contract Paragraph C002. The Fuel Oil Capacity should include a margin of 10%.

SPECIAL FEATURES

None.

DELIVERABLES

849-C130-01 CAPACITY PLAN

849-C130-02 TANK CAPACITY TABLES

849-C130-03 HOPPER CAPACITY TABLES

849-C130-04 CONSUMABLE CALCULATIONS

STANDARDS

API Manual of Petroleum Measurement Standards, Standard Chapter 2, Section 8A

C665 POTABLE WATER SYSTEM

GENERAL DESCRIPTION

The Contractor shall provide and install a complete potable water system, including freshwater generator(s) in accordance with, ABS, USCG Subchapter F, EM 385-1-1and these specifications.

Per EM 385-1-1, drinking water on all Army floating vessels shall be provided according to 40 CFR 141 and Chapter 6 of Navy Medical (NAVMED) P-5010.

REQUIREMENTS

The Contractor shall provide and install all pumps, filters, piping, hoses, valves and tanks, necessary to form a complete potable water system. The Contractor shall develop drawing 849-

C665-01 POTABLE WATER SYSTEM DIAGRAM, 849-C665-02 POTABLE WATER

SYSTEM CALCULATIONS, and 849-C665-03 POTABLE WATER SYSTEM ARRANGEMENT AND DETAILS and submit them to the COR and ABS as applicable during Phase II of the Contract for review and approval.

Potable water shall be distributed throughout the vessel from the potable water tank to the sinks, toilets, showers, galley- and laundry equipment, technical installations and hose bibbs. The vessel shall be able to generate potable water out of seawater and take on potable water from an off-vessel source.

All of the potable water tank filling connections and hoses, and pump-off connections and hoses shall be unique to the Potable Water System to avoid contamination from other system(s) filling/ pump-off hoses.

The potable and hot water systems shall be sized for the crew and endurance requirements listed in Contract Paragraph C002.

SPECIFIC REQUIREMENTS

Fresh Water Generators Two fresh water generators of the evaporative type shall be provided and installed. The two fresh water generators shall be sized to make up the daily potable water consumption as required in Contract Paragraph C002. This production shall be accomplished with both of the generators producing fresh water simultaneously. The fresh water generators shall be heated by HT cooling water of the main engines as described in Contract Paragraph C640. Each fresh water generator shall be provided with a sea water pump of the centrifugal type (located below the light ship waterline or provided with self-priming possibilities. For requirements concerning the (raw) feed water connection of the fresh water generators, see Contract Paragraph C645. The materials and construction of fresh water generators shall be in accordance with the manufacturer's standards.

The fresh water generators shall be complete with their own (local) controls and alarm monitoring and shall be equipped to interface the Integrated Machinery Alarm and Monitoring System, see Contract Paragraph C780.

Distribution System A potable water distribution system shall be supplied and installed to provide service to all fixtures on the vessel requiring potable water. The system installed shall comply with all applicable guidelines set forth by EM 385-1-1. The system shall be arranged so that the entire system can be gravity drained for cold weather lay-up.

Cold-water service shall be supplied to all sinks, showers, toilets, clothes washers, hot water heaters, hose bibbs, and other consumers as required.

Hot water service shall be supplied to all sinks, showers, washing machines, dishwashers, and other consumers as required.

Stainless steel pipe shall be used for the potable water tank fill lines and from the tank to the pressure set. From the pumps to the remainder of the system the piping material shall be ASTM B-88, type K, seamless copper. All valves shall be bronze. If solder connections are used, they shall be lead free.

To assist in maintenance and repair, shut-off valves shall be supplied and installed at all hot and cold water piping outlets. These valves shall be quarter-turn ball valves, with each being easily accessible without special tools.

Since the vessel operates in cold climates, no piping shall be run on or against exterior bulkheads. All potable water-piping running through unheated spaces or the weather shall be heat traced and insulated. All hot water piping shall be insulated.

The installation shall be provided with a permanently installed system for chlorination of potable water. The chlorine dosage point shall be located at the tank’s filling or recirculation pipe.

Potable Water Pressure Set The Contractor shall provide and install (a) potable water pressure set(s) (pumps and tank). The potable water pressure set with two pumps shall be provided and installed with all required pressure switches, pressure gauges, and pressure relief valves. The pumps shall be of the in-line, centrifugal type, closed coupled and have a SS316 mechanical seal. Impeller and housing shall be made of stainless steel or bronze. Bronze pumps must have a motor with 316 stainless steel shaft extension.

The potable water system shall be set up such that the pressure at any tap should be at least 15- PSI. Differential between high pressure cut-out and low pressure cut-in shall be adjustable and set at 20-PSI.

Alternatively speed controlled pumps with a variable capacity can be used to maintain the required system pressure. Appropriate pressure reducing or regulating devices shall be provided, where needed, depending upon the pressure limitations of individual items to which potable water will be supplied.

The pressure set shall be ASME approved and furnished with a pre-charged water tank. The pre-charged water tank shall be supplied with a relief valve, which is capable of discharging the full output of the pump. The pressure tank shall be equipped with a valved connection so that it can be recharged, if required, from a compressed air service outlet. The pumps shall be sized appropriately for the system based on the Contractor’s system calculations (849-C665-02 POTABLE WATER SYSTEM CALCULATIONS). A suitable hose shall be provided for recharging the water tanks. The hose shall be stowed on a rack adjacent to the pressure sets. The pressure tank shall be provided with a turbulator to prevent stagnation. Pressure tank shall have stainless steel system connections and all parts in contact with water shall be coated with a durable epoxy coating.

The potable water pressure set shall be complete with their own (local) controls and alarm monitoring and shall be equipped to interface to the Integrated Machinery Alarm and Monitoring System, see Contract Paragraph C780.

Hot Water System The Contractor shall provide and install a Hot Water System, which can either be a hot water recirculating system with calorifiers or a system with hot water heaters installed in-line in the cold potable water system.

If a hot water recirculating system is installed, the circulation pumps shall be maintenance free and have a bronze housing with ceramic impeller and the calorifier(s) shall be heated by an indirect thermostatically controlled electrical heating coil. The calorifier will consist of a double walled tank, and have a capacity as required for the complement. Hot water shall have a temperature of at least 160°F at the heater outlet.

The calorifier(s)/in-line hot water heaters shall be complete with their own (local) controls and alarm monitoring and shall be equipped to interface the Integrated Machinery Alarm and Monitoring System (see Contract Paragraph C780).

Water Filters & UV Purifier Tank Fill Strainers - The Contractor shall provide and install in-line, simplex basket type strainers on all potable water tank fill lines. The strainer baskets shall have 1/16-inch perforation.

The strainers shall be sized for the full flow rate of the potable water fill line.

A strainer shall be located at each potable water fill station. Clear area shall be provided around the strainers to allow removal and replacement of the strainer baskets from above without removing any equipment or piping other than the strainer basket access covers.

Potable Water Filtration - The outlet of the potable water pressure set tank shall be fitted with two heavy-duty duplex potable water service filters configured with top access drop in cartridge filters. The filter housings shall be made of stainless steel. The two duplex filters shall be arranged in series from the pressure set outlet. The upstream filter shall filter sediment down to 1 micron and the second filter shall reduce scale and chlorine taste and odor.

The duplex filter flow rate (for each filter element) shall be sized for:

• 125% of the maximum potable water usage flow rate from the tank, and also

• filter element life of 6 months before replacement.

The duplex filters shall be mounted with clear space provided above the filters to allow filter removal and replacement of filter elements from above the filter housing without removing any equipment or piping other than the filter access covers In addition to the mechanical filtration an ultraviolet disinfection unit shall be fitted after these filters. The UV unit system shall incorporate two independent UV filters arranged in a duplex configuration to provide fully redundant UV disinfection capability. The flow rate for each of the two UV units shall be sized for 125% of the maximum flow rate from the potable water tank.

UV bulb life at full purification intensity shall be 12 months minimum.

Sample petcocks shall be provided before and after the filtration and disinfection unit(s).

Isolation valves shall be installed in the inlet and outlet of each filter housing, for ease of maintenance.

Additional in-line filtration shall be provided in the system for supplying water to the galley equipment. The galley system shall be a reverse osmosis drinking water filtration system with four-stage filtration.

Potable Water Tank(s) See Contract Paragraph C130 for potable water tank capacities. The potable water tank(s) shall be constructed so that all tank surfaces in contact with the potable water are constructed of 304L stainless steel. Welds of the 304 material in contact with the potable water shall utilize compatible stainless filler material.

The tank construction may incorporate hull bulkheads if suitable stainless steel insert plate and/or stiffening is incorporated into the bulkheads. (details of the construction can be found in Contract Paragraph C320).

The tank(s) shall be marked with minimum ½-inch letters “POTABLE WATER TANK” on all sides. Tank level & Sample petcocks shall be provided on the tank(s). They shall be turned down and labeled.

The tank(s) shall be provided with an ABS approved tubular liquid level sight gauge with integral valves, suitable for potable water service. The liquid level gauges shall have all stainless-steel construction and each gauge shall be calibrated to show ¼ tank level, the ½ tank level, and the ¾ tank level.

The potable water tank shall have a 10% (Low-Low) alarm connected to the Integrated Machinery Alarm and Monitoring System (see Contract Paragraph C780).

A backflow-preventer shall be installed between the potable water tank and the pressure set.

The potable water tank shall be filled to capacity for provisional acceptance at the Contractor’s facility. The potable water tank and fresh water shall be sterilized, chlorinated and tested for “Full Potability.” The “Full Potability” test shall include testing for metals, anions and bacteria.

The Contractor shall provide a certificate for an independent testing agency indicating that the tank and fresh water are serviceable for “Full Potability/ Drinking” water.

Potable Water Fill Stations The potable water filling station(s) shall be located on the open deck.

At each filling station, the fill…