REVISED COPY 7 2120 Fore Topmast Staysail Encl 4.doc

REVISED COPY 7/21/20

STATEMENT OF WORK

USCGC EAGLE (WIX 327) NEW SAIL CONSTRUCTION CONTRACT

FORE TOP MAST STAYSAIL – 04/25/2020

1.0

CONSTRUCTION SPECIFICATIONS:

1.1 General Specifications:

1.1.1 The selected contractor will construct the sails listed and described in the following paragraphs. Drawings are included for reference. Specifications describe the minimum acceptable standards. The Contracting Officer (KO) is XXXXXXX. The Contracting Officer’s Technical Representative (COTR) is BMC Leland Currier and the alternate is BOSN Spencer Greer, USCGC EAGLE (WIX 327). Contractors may deviate from the written specifications to take advantage of new technologies or enhanced construction processes. However, any deviations from these specifications must be approved in writing by the KO before implementation.

1.1.2 The contractor will provide the COTR with a set of construction patterns or drawings for approval before starting construction. These drawings or patterns must indicate any deviations from the minimum standard. Within three business days of receiving the proposed patterns, the COTR or KO will either approve the patterns in writing or submit a discrepancy list to the contractor.

1.2.

Construct A Scotch Miter Cut Fore Topmast Staysail of about 583 square feet with these approximate dimensions:

Cloth Weight - 13 ounce, white, warp oriented, balanced construction “North Oceanus” Dacron sail cloth with full ultra violet (UV) light protection.

Panel Width – Construct the sail using 20” wide (finished width) panels of sail cloth.

Maximum Luff Length – 71.92 feet

Maximum Leech Length – 44.17 feet

Maximum Foot Length – 34.83 feet Maximum LP – 16.25 feet Critical Dimension – FT

LH – 10

FR – (-3.5) inches

LR – 2.5 inches

Rings:

“Head Earrings” – A contractor furnished 3 ½ inch (ID) 316 stainless steel ring made of ¾” stock spliced to the external, hand stitched bolt rope.

“Tack” - A contractor furnished 3 ½ inch (ID) 316 stainless steel ring made of ¾” stock spliced to the external, hand stitched bolt rope.

“Clew Iron” – A contractor furnished 3 ½ inch (ID) 316 stainless steel ring made of ¾” stock spliced to the external, hand stitched bolt rope.

1.3.

Bolt Rope: Construct all sails within this scope of work with a three strand, white, spun Dacron, external bolt rope hand sewn to each sail’s full perimeter. The Bolt Rope will form the structural frame work of the edge of the sail. Ensure each strand of the bolt rope is stitched to the sail cloth.

1.3.1. Hand sew a 7/8” diameter external boltrope along the sail’s perimeter.

1.3.2. Eye splice six appropriately sized stainless steel thimbles, one spliced into each bitter end of the bolt rope, at each of the sail’s three corners. Splice these “bolt rope” bitter ends into the head and tack earrings and the clew iron.

1.3.3 Hand cross stitch the hand sewn bolt rope at all corners, eyelets, splices, rings, twine ends and seam ends.

1.3.4 Sew the external, hand sewn bolt rope to the sail cloth on the port side using “a single plied yarn of 5/8” dacron line” or sail twine. If used, the sail twine must meet or exceed the diameter and breaking strength of “a single plied yarn of 5/8” Dacron line.”

1.3.5 Using chrome leather cover the bolt rope as required for chafe protection.

1.4 Thread: Construct all sails within this scope of work using UV resistant, white #346 polyester threads for all stitching, other than the hand sewn, external bolt rope.

1.5 Seams: Construct all sails within this scope of work with seam widths of at least 1 ½ inches but not more than two inches in width. Sew the seams with either two rows of three step zigzag stitching or three rows of triple zigzag stitching.

1.5.1 Ensure no stitching “steps” over the edge of the seam material.

1.5.2 Sew the linings, tablings, and turns along the perimeters of the sails with two rows of straight stitching made with #346 machine thread.

1.5.2.1 In some cases, because of restricted space the sail maker may opt to use only one row of #346 machine thread straight stitching along a sail’s perimeter or in the linings, tablings and turns. In these cases, refer the matter to the Coast Guard Inspector who will decide if one row is sufficient or if two rows of straight stitching are required on a case by case basis.

1.6 “Patches and chafing gear”

1.6.1 Reinforce or protect from chafe all corners, bronze washer with stainless steel liner pressed rings, “buntline bullseyes,” “earing(s)” and clew irons as needed using the following guidelines.

1.6.2 Patches – install reinforcing patches as needed using the following guidelines:

1.6.2.1 Ensure the cloth direction in the patches is oriented in the same direction as that of the surrounding sail.

1.6.2.2 Hem all patches.

1.6.2.3 Proportion the patch length along the leeches and foot of the sail such that the effective construction forms one continuous patch from the earrings to the clew irons.

1.6.2.4 Install at least five patch layers at the clews and head corners. Preferably, the proportions will be such that six layers of sail cloth run the full length of the leech and foot nine layers of sail cloth are sewn in at the earring and clew corners.

1.6.2.5 Proportion the separation between the perimeter of the patches to gradually transfer the strain from the point of maximum stress out to the unreinforced cloth.

1.6.2.6 Ensure corner patches distribute the strain in the correct direction.

1.6.2.7 Chafing gear: At all black nylon washer with stainless steel liner Rutgerson pressed rings install chrome leather chafing gear to protect the sail cloth. Protect other chafe points on boltrope, along the head, foot and leeches, and all other chafe points as necessary.

1.7 “Clew Iron”, tack, and “Head Earing(s)”.

1.7.1 “Tack” - A contractor furnished 3 ½ inch (ID) 316 stainless steel ring made of ¾” stock spliced to the external, hand stitched bolt rope.

1.7.2 “Head Earrings” – A contractor furnished 3 ½ inch (ID) 316 stainless steel ring made of ¾” stock spliced to the external, hand stitched bolt rope.

1.7.3 “Clew Iron” – A contractor furnished 3 ½ inch (ID) 316 stainless steel ring made of ¾” stock spliced to the external, hand stitched bolt rope.

1.8 Luff fastiners:

1.8.1 Along the luff, install 35mm black nylon washer with stainless steel Rutgerson pressed rings evenly spaced at intervals not exceeding 20 inches.

1.9 Scotch Miter cut this sail. In a “Scotch Miter” cut orient the panels on either side of the miter seam parallel to the leech and foot.

1.9.1 Panel width – Panels shall be 20” wide finished.

1.9.2 Construct the “Scotch Miter” seam using two-inch miter seam using four rows of strainght stitching. All other seam are constructed as noted in paragraphs 1.5 above and 1.4 in General Specifications.