9.1.1 Drainage arrangements and air pipes are to be provided in accordance withPt 5, Ch 13, 10 Drainage arrangements for ships not fitted with propelling machinery and Pt 5, Ch 13, 12.4 Air pipes 12.4.4 respectively.
9.1.2 Deck openings to allow drainage in accordance with Pt 5, Ch 13, 10.1 Pumps 10.1.3 are to be as small as practicable and closed by watertight gasketed covers of steel or equivalent material.