Section 4 Shell Plating and Deck

401. Thickness of deck plating and stringer plating

1. The upper deck and stringer platings are to be extended to the longitudinal bulkhead of hopper holds.

2. The thickness of deck platings for storage of heavy dredging equipment is not to be less than that obtained from the following formula. However, exceptions may be considered for the deck platings specially protected.

0.05 Ä + 9 (mm )

3. The structural scantlings of horizontal plane of trunk which are used same purpose of deck are to comply with the requirements of decks.

402. Openings in trunk

The cut-outs of trunk or weir are to have sufficient sectional area for the specific gravity of mud.