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Engine Room

Completely Re-Equipped Engine Room

Sea Lion's engine room was extensively upgraded as part of the $2,500,000 re-fit in 2011.


Main Engine.  The turbo-charged Caterpillar 3408 was the only major component not upgraded or replaced as it had only some 2,000 hours on it since major overhaul when the re-fit was done.  Currently (as of September 1, 2016) it has just over 3,700 hours.


Dripless Shaft.  A dripless shaft was installed at the end of 2011.


Generators.  Two new Northern LIghts 30KW generators were installed.  Each has approximately 1,650 hours as of September 1, 2016.


House Batteries. The house battery bank was replaced and upgraded.  It now contains 24 6-volt gel cells wired in parallel to provide 2,400 amp hours at 24 volts.


Starting Batteries.  The starting batteries for the main engine were replaced in March, 2015 and the starting batteries for the generators were new when the generators were installed.  There is a dedicated charger for the main engine starting batteries and one for the generator starting batteries. 


Inverter/Chargers.  Two 4,000 watt Magnum inverter/charges were added,  In combination with the 2,400 amp hour house battery bank, the new inverters give the boat plenty of power to turn off the generator after dinner and power the boat's systems and appliances through the night for a quiet anchorage.


Comar AutoShore Power Boosters and Glendenning Cablemasters.  Shore power hook-up was modernized as part of the re-fit as well.  It now includes two 50-amp cables, fore and aft, each on a Glendenning Cablemaster, each protected by an isolation transformer, each routed to its own AutoShore power booster to give normalized voltages even when dock-side power is irregular.


Electrical Panel.  The main electrical panel was re-designed and simplified.  It has a 12-volt circuit, a 24-volt circuit, and an A Bus and a B Bus for 120/240 volt demands.  The B Bus can be fed by a generator or shore power, or it can be fed by the inverters.  The A Bus can be fed only by a generator or shore power.  The engine room panel feeds two remote panels, one in the galley and one in the pilot house.


HVAC.  Two new Technicold chillers were installed in January 2012, in anticipation of Sea Lion's move to the East Coast.  A Kabola diesel furnace was installed as part of the re-fit.  The Kabola can be used to heat the air in the living spaces; and it also heats the water in the water heaters which allows the electric coils in the water heaters to be turned off.


Bilge Pump Manifold.  A new bilge pump manifold was installed with a prime that is fed by the sea chest and separate suction for each of the boat's five bilges. Suction is supplied by either a 2 1/2 horsepower electric pump or an engine driven pump.  A flow wheel was added to indicate through-put.


Oil Change System. The oil change system was upgraded as part of the re-fit.  It now includes a Reverso pump that, at the flip of a switch, allows selective draining of the main engine, either generator, and the transmission.  Drainage is into a waste oil tank.  An oil supply tank feeds a pneumatic oil fill nozzle on a reeled hose.


Stabilizers.  The 3/8-inch oil supply lines for the stabilizers were replaced with 3/4-inch stainless steel lines to increase the response of the fins.


Sea Chest.  A dual intake sea chest with shut-off valves on each intake feeds six distribution pipes, each with its own valve:  the main engine, the generators, the chillers, the bulbous bow, the watermakers and the bilge pump manifold prime.


Water Makers.  Two  FCI 1,800 gallon-per-day watermakers were installed as part of the re-fit, giving the boat the abiliity to completely fill its 900-gallon water tanks in six hours underway.


Maretron Information/Alarm System. A NMEA 2000 backbone was installed throughout the boat as part of the re-fit, and a number of Maretrom DM 250 monitors were installed in strategic locations.  In addition to relaying all normal engine read-outs for the main and both generators, and electrical power information, as well as potable and waste water tank levels, the system also provides alarms for smoke, methane and bilge water levels and pump activity.


Fan System.  Eight high-volume, reversible fans were installed in banks of four on each side of the engine room.  One bank is set for intake and the other for discharge, insuring ample clean air circulation for the engines.

The engine room has 6'8" stand-up head-room, wide main-engine walk-around aisles, both LED and fluorescent lighting and two entries:  a ladderway down from the aft-deck and a doorway from the lower deck hallway aft of the two guest staterooms. All the equipment is easily accessible (with the exception of the aft generator's sea strainer, but hey... you have to have some challenge).

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