single lever control system. Control head to be mounted on the cockpit side adjacent to
the starboard steering wheel.
7.12. Bow Thruster
A Max Power model “Retract Series 300 (Mod. 315)” vertical retracting hydraulic
thruster to be fitted under forward end of crew cabin berth. Controls located at the panel
where the engine controls are located.
7.13. Power Take-Off at Main Engine
The bracket requirements will need careful attention to ensure clear passage in front of
the engine. The power take-off unit will drive the 100 amp alternator and the engine
driven bilge pump.
7.14. Drip Pan
Main engine and generator foundations to have built-in sumps to act as drip pans, ie
these compartments must be sealed off from the rest of the bilge areas.
8. Ship’s Systems
8.1. Air Conditioning & Ventilation
Air Conditioning/Heating
The air conditioning system shall be supplied by Frigomar. This supplier shall be
responsible to the Builder for furnishing all drawings and diagrams showing proper
installation and detailing the sizes for refrigerant piping as well as electrical and control
circuits. The Builder shall be responsible for final balancing of the system and obtaining
specified air quantities at the outlets as well as minimizing noise transmission from the
air handlers and air noise in the ducts.
The air conditioning system shall be chilled water type and shall have provision for
heating.
Total cooling capacity of the compressor shall be 39000 BTU.
It shall take suction from the engine room common sea chest and shall have a common
overboard discharge with a non-return check valve and stop valve. The salt water
pumps shall be resilient mounted and easily accessed for service.
Chilled water from the compressor units shall be piped to and from the air handlers
using insulated reinforced marine grade hose or equal. Service valves should be
installed between the air handlers and chilled water lines. It is critical that the insulation
on the supply and return lines be unbroken for it's entire length without break at the
supporting clips.
Check air handler pans have drains in each corner to facilitate drainage when heeled.
Grills for air conditioning, where exposed, are to be in keeping with the interior styling.
Each unit shall have its own thermostat/controller switch for heating or cooling.
All ducts shall be 127mm (5”) round/wire and mylar fabric shell with 12mm (1/2”)
insulation or built in insulated plywood ducts where space is at a premium. Care shall be
taken to provide for quiet operation.
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