1305M320QNCND0033 A0003.pdf

Offers 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 or (c) By separate letter or electronic communication 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

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

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

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

IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, 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)

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.

15C. DATE SIGNED

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

16C. DATE SIGNED

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

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

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

See Attachment Page.

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1305M320QNCND00330003 MAY 28, 2020 NCND6000-20-00820

AJ630031

WESTERN ACQUISITION DIVISION

CONTRACTS BRANCH

7600 SAND POINT WAY NE, SOU6

SEATTLE WA 98115-6349

1305M320QNCND0033

APR 24, 2020

See Schedule x

5/28/2020

Noah Nielsen Contracting Officer

Attachment Page

PAGE 2 OF 2 1305M320QNCND00330003

The purpose of this amendment is to provide responses to the following questions:

1. The RFQ (in Optional Item A) requests that A-frame be rated at 5,000 pounds SWL with a

3:1 factor of safety. This would result in an ultimate load of 15,000 pounds. The RFQ also requests two points of attachments for sheaves, we assume one for the hauling winch and one for the conducting wire winch, although it is not clear if both cables will be used simultaneously? Also, the RFQ does not state if off-center axis towing is required, or if a stability analysis for underway towing is required?

We also note that the Hauling Winch and foundation is required to be rated at 5,000 pounds

SWL and the Conducting Wire Winch at 1,000 pounds SWL.

We looked up the breaking strengths for the 3/8" HPME line and for the .322 conducting wire. Breaking strengths vary by manufacturer, however we found 3/8" HPME with a breaking strength of 19,600 pounds and breaking strength of 10,000 pounds minimum for the

.322 EM UNOLS standard wire.

If we design and install the winches in accordance with the RFQ using the stated 3:1 factor of safety, and there is a problem such as wire snagging on the ocean bottom during operation, the winches may rip off the vessel, prior to parting the line. In our experience, a winch and winch foundation should be able to break the maximum strength line, without catastrophic failure. Our usual design procedure (which follows ABS rules) on scientific winches is to confirm the foundation design using: 1) a normal rigging factor of safety of 5:1, and 2) an ultimate failure analysis based on being able to break the wire using 80% of the foundation's ultimate strength.

Similarly, the A-frame and its sheaves may also be undersized. If the A-frame is installed with an ultimate strength of 15,000 pounds and a device snags on the bottom, the A-frame will likely collapse, or the sheaves tear off, prior to a wire parting.

Government Response:

NOAA is aware of the breaking strength issue of the proposed rigging vs the proposed A-

Frame design. The designed SWL for the A-Frame is 5,000 pounds, and the unit is never expected to be loaded beyond that point. NOAA may choose to employ fusable links for heavy lifting operations (approaching the designed SWL). Further, hydraulically driven winches typically pay out shortly after reaching rated load, eliminating the chance to overload the rest of the lifting system components.

Off-center towing is implied by the two eyes on the A-frame, however both winches are not likely to be run simultaneously under load. A stability analysis for towing is not necessary.