• Cockpit drains - usually two and found under the cockpit;
• Engine raw water coolant intake;
• Sea toilet effluent outlet;
• Sea toilet flushing water inlet;
• Galley sink.
Forward port – possibly toilet inlet
Sea toilet flushing water inlet
Middle Starboard - Engine raw water coolant intake
Forward starboard – possibly waste sink
Galley sink
Middle Port - Cockpit Drains – x2 T connector into a single drain
Middle port - Sea toilet effluent outlet???