804-5184163 Trunks.pdf

This document is a technical drawing specification for Naval safety equipment, specifically nets and trunks used in ship operations. The drawing, prepared by NAVSEA (Naval Sea Systems Command), details the design, construction, and installation requirements for safety nets, trunk systems, and related hardware used aboard naval vessels.

The specification encompasses multiple safety net arrangement scenarios, with detailed configurations for different deck placements and operational requirements. Key components include safety net installation at various heights (ranging from 12 to 24 inches below deck levels), trunk systems with hatch and hatchway configurations, vertical ladder systems, and structural bullhead attachments. The document provides specific dimensional tolerances, material specifications (including steel components per ASTM standards), hardware requirements (such as snap hooks, staples, and webbing), and installation procedures for both standard and alternate configurations. Testing and inspection requirements are outlined, including visual inspections and staple pull tests to ensure structural integrity. The drawings include plan views, elevation details, and cross-sectional diagrams showing proper spacing, allowable gaps, and structural interference considerations. References to related specifications and technical standards (including MIL and ASTM specifications) are provided throughout. The document includes revision blocks indicating updates through February 2017 and is approved for public release with unlimited distribution.