scope:

This specification covers aluminum beam and truss brows (ship's gangplanks).

Brows will be of the following types, widths, and spans, as specified (see 6.2):

Type B - Beam brows. Widths: 3-foot (ft), 4-ft, and 5-ft. Span (ft) Drawing number 12 1404700 16 1404701 20 1404702 Type T - Truss brows.

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer (Code 156), Naval Construction Battalion Center, Port Hueneme, CA 93043-5000, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

Span 3-ft width 4-ft width 5-ft width (ft) Drawing number Drawing number Drawing number 25 1404703 1404703 1404703 30 1404703 1404703 1404703 35 1404704 1404704 1404704 40 1404705 1404705 1404705 50 1404706 1404706 1404706 60 1404707 1404707 1404707 70 1404708 1404708 1404708 80 1404709 90 1404710

The specification number, type, width and span combined to form the specification PINs for the brows covered by this specification (see 6.5). The PINs for the brows are established as follows:

intended Use:

Aluminum brows are intended to be used as gangplanks for boarding and leaving a ship at a pier.