Description

This Standard sets out methods for determination of the thickness of textile fabrics.

Methods are given to determine the static and dynamic thicknesses of woven, non-woven, and knitted textile fabrics, and coated fabrics.

Scope

This specification applies to small square weathertight hatches in the size range 650mm X 650mm to 1275mm X 1275mm.

Four sizes are covered to a common basic design, with variations in securing and stiffening to suit the increases in size.

Coaming height and thickness are not specified, as these will be determined by the position of the hatch and the requirements of the appropriate Statutory Authority and/or Classification Society.

The hatches are suitable for giving access to compartments other than those subjected to pressure. They are not suitable for use as escape hatches.