T0838 Att 7 - Trawl Door Specifications~1.pdf

This is a trawl door specifications attachment for a charter services ocean vessel trawl survey contract opportunity issued by the New Jersey Department of Environmental Protection (NJDEP). The document provides detailed technical specifications for Thyboron Type II steel trawl doors required for the survey operations. The trawl doors measure 58 inches in length and 48 inches in width, with a surface area of 19.6 square feet and a total weight of 792 pounds including three weight plates of 31 pounds each. The specification includes precise chain configurations for both frontside and backside setup, consisting of 22 links of 11 mm lower-load (LL) tow chain at 5+7 mm LL spacing, with a top chain of 10 links (9 plus 1 hanging) and a bottom chain of 9 links, along with a long chain of 19 links (18 plus 1 hanging).

This attachment establishes the exact equipment requirements that bidders must provide or account for in their proposals for the ocean vessel trawl survey services. Compliance with these specifications ensures standardized and compatible equipment for the survey operations to be conducted under the contract. The detailed measurements, weight distribution, and chain configurations are critical technical requirements that bidders must acknowledge and confirm their ability to meet when submitting responses to this rebid opportunity.