Large Fishing Vessel Inspection Regulations — 16
16 (1) Valves or cocks shall be fitted to all suctions and discharges that pass through the hull of a fishing vessel below the weatherdeck. (2) Subsection (1) does not apply to (a) pump discharges of 38 mm or less in internal diameter that are situated above the load water line; (b) keel cooling systems; or (c) scuppers and discharges that pass from the weatherdeck to the ship’s side above the load water line. (3) The valves or cocks required by subsection (1) shall be fitted as close to the side of the fishing vessel as possible. (4) Suction and discharge valves and cocks on a steel fishing vessel shall be attached to the plating of the hull or to the plating of fabricated water boxes by (a) bolts with countersunk heads tapped through the plating, or (b) studs that are screwed into heavy steel pads welded or riveted to the plating and that do not penetrate the plating, and such valves or cocks shall be fitted with spigots passing through the plating. (5) Where sea valves are provided with clearing connections from steam or compressed air lines, the scantlings of the valves and the valve stools, if fitted, shall be suitable for the maximum pressure to which the valves or stools may be subjected. (6) Boiler blow-down valves or cocks on the ship’s side shall be fitted above the stokehold plates, in an accessible position, shall be so arranged that it can readily be seen whether they are open or shut, and the handles shall be so made that they cannot be removed unless the valves or cocks are shut. (7) Suction and discharge valves and cocks on a wooden fishing vessel shall be attached to the hull by the methods prescribed by the Board as set out in Schedule VI or any other method accepted by the Board after full particulars have been submitted to it. (8) Side scuppers shall not be fitted from the tween deck area of a fishing vessel when the tween deck is situated less than 760 mm or two per cent of the length, whichever is the greater, above the deepest load water line. (9) Where the tween deck of a fishing vessel is situated at least 760 mm or two per cent of the length, whichever is the greater, above the deepest load water line, side scuppers may be fitted if an automatic non-return valve with positive means of closing it from the tween deck space and with extended spindles to the weatherdeck is fitted to each scupper. (10) The means of closing the valve referred to in subsection (9) shall be readily accessible and an indicator showing whether the valve is open or closed shall be provided at both decks. (11) Where side scuppers are not fitted on a fishing vessel, drainage sumps connected directly to the suction of the offal pump, or to a similar pump, shall be provided at the forward and after ends of the fish processing tween deck area. (12) The pump to which the drainage sumps required by subsection (11) are connected shall be automatic and so arranged that the pump will start to operate whenever water is present in the drainage sumps. (13) An audible alarm that operates only when water in the drainage sumps does not activate the pump in accordance with subsection (12) shall be provided in the wheelhouse. (14) An emergency method of draining the sumps that is independent of the fire or bilge system shall be provided. SOR/80-249, s. 9