The engine room was completely rebuilt during the 2012 refit under the supervision of the MCA’s surveyor. All machinery and associated services were removed before the engine room was repainted and refitted. The sound proofing was renewed to ensure maximum acoustic insulation.
All pipework in the engine room was lagged with MCA approved fire retardant materials to comply with the MCA requirements and all flexible hoses renewed.
Engine & Gearbox
• The yacht is fitted with a water-cooled turbo-charged and after-cooled 6-cylinder Alaska Diesel ‘Lugger 6108 A2 engine producing approx. 250hp @ 2,300rpm.
• The gearbox is a ZF IRM close-coupled unit with a 2.694:1 ratio.
• Both the engine and the gearbox were removed from the machinery space, rebuilt to an as-new condition, then re-sprayed and refitted in 2012.
• Mastervolt 24vDC 150 amp alternator to charge the ship’s service batteries fitted in 2012. Charge regulated by Mastervolt 3 step ALPHAPRO charge regulator.
• An automatic oil change pump was also fitted to the engine and gearbox sumps.
• VDO analogue oil pressure, engine temperature, battery volts and engine hours fitted at chart table for ease of monitoring while in use.
• The engine is mounted to the engine beds with Aquadrive anti-vibration mounts
• The main engine exhaust system consists of a factory water injection elbow leading to a Soundown water lock muffler to eliminate all exhaust noise.
• Chromed Kobelt dual lever electronic throttles at both helms and additional wire based emergency controls in engine room. Run and standby engine control systems to provide effective backup of engine control.
• A digital pyrometer with high temperature alarm is fitted to starboard helm to enable loading the engine for maximum fuel efficiency.
• Engine room ventilation is via a 230vAC extraction fan with thermostatic control and manual override. This fan operates from shore power, generator or inverter.
• An additional engine room access was created in 2012 from the aft guest cabin to facilitate engine maintenance on port side of engine room.
• Since 2012, the engine has been maintained by Lugger’s main agent in France and all recommended maintenance and renewals carried out in line with manufacturer’s recommendations. Detailed service records are available.
• Extensive engine spares including spare starter motor, primary and secondary diesel filters, fuel filters, fan belts, sea strainer baskets etc.
• Engine hours approx. 1450 hours as of Sep 2015.
• Cruising speed – approx. 9 knots.
• Maximum speed – approx. 11 knots.
• Fuel consumption – approx. 15 litres per hour at cruising speed allowing theoretical maximum range of approx. 1,500Nm. Fuel consumption reduces to 6 litres per hour at 6 knots.
• The propeller is a hydraulically actuated Hundested VP-FRH14 3-blade variable pitch propeller allowing pitch to be varied through fully feathered to reverse via Kobelt engine control.
• Hundested propeller pitch angle indicator fitted to both helm stations and controlled by Kobelt chromed controls at either helm.
• Propeller removed and serviced in 2012 and maintained annually since. Propeller greased annually in line with manufacturer’s recommendations.
• The propeller shaft is a 75mm stainless steel hollow shaft with internal control rod to activate the propeller.
• Ambassador AM30 3 bladed rope cutter fitted to shaft.
• Coupling between shaft and gearbox is via Aquadrive flexible coupling.
• The Hallex stern seal and stern tube bearing are lubricated with cooling water from the engine
• Cast P-bracket to support propeller shaft with water-lubricated bearing.
• Lewmar 300S VTAH 30hp retractable hydraulic bowthruster with control at both helm stations and powered by Bosch Rexroth A10V0 hydraulic pump on generator.
• Bowthruster removed and serviced during 2012 refit.
• Lewmar’s manual raise and lower mechanism modified to permit easier emergency operation than provided originally by Lewmar.
• A custom hydraulic system is fitted which controls the Leisure Furl in boom furling system, the Reckmann furler, the Lewmar bowthruster, the Maxwell anchor windlass, the Lewmar winches and both the vang and the backstay cylinders.
• The system is powered by a Bosch Rexroth A10V0 pump fitted to the generator PTO (pump serviced during 2012 refit) or by a DC power pack via 2 x 24 vDC pumps. Thee DC pumps were also removed and serviced during the 2012 refit.
• A new industrial grade programmable logic computer (PLC) was fitted in 2012 by Lewmar to control all hydraulic functions.
• All hydraulic hoses replaced in 2012 and terminated in stainless steel to minimise corrosion.
• Seawater hydraulic oil heat exchanger fitted in 2012 in order to maintain hydraulic oil at optimum operating temperature when system used for extensive periods of time.
• High hydraulic oil temperature sensor fitted to return feed with alarm on main alarm panel at chart table.
• Emergency hydraulic system shutdown fitted to helm station.
• Spare hydraulic oil carried on board. Spare vang and backstays cylinder seals carried on board in ship’s spares.
• The yacht is fitted with a dual wheel steering system. The wheels are connected by a continuous length of chain, in turn connected to the rudder via SK90 dyneema (new 2012) connected to the quadrant.
• The wheels are custom-made laminated and varnished mahogany and maple with carbon fibre reinforced mahogany and maple spokes. (Professionally re-varnished 2015).
• Emergency steering can be fitted to the top of the rudder stock. The aluminium emergency tiller is stowed in the lazarette and can be connected and controlled using lines lashed to the deck cleat and aft winches. The emergency steering meets the requirements of the MCA.
• Commercial grade HyDrive (Admiral HD Series) balanced hydraulic autopilot rams controlled by Raymarine course computer and powered independently from main hydraulic system.
• Emergency autopilot dis-engage fitted to helm station.
Plumbing, Fuel, Fresh & Waste Water Systems
• The fresh water system is pressurised by two Headhunter 24 vDC pumps plumbed in parallel to supply a regulated 35psi supply at 75 litres per minute. Both pumps replaced in August 2014. One old pump held as an onshore spare.
• The fresh water system is fitted with a Wellmate WM-4LP accumulator located under the sole in the forward guest cabin. (Replaced April 2015) The accumulator enables taps to run for a significant period before the pumps cut in.
• A manual Whale Tiptoe Mk4 foot pump is plumbed in parallel with the cold water pressure to the galley sink.
• Two 45-litre Raritan Engineering model 171211 water heaters are fitted to the yacht to provide hot water (New May 2013). The water is heated via 230 vAC 1.25kW elements.
• Hot water tempering valves are fitted to the water heaters to reduce water from 70 degrees Celsius to 38 degrees Celsius thereby making the hot water tank capacity last longer.
• Pressure relief valves fitted to both tanks as well as tank drains. Both plumbed to bilges
• Spare heater elements and tank anodes carried on board. Water heater elements descaled bi-annually and anodes checked / replaced annually.
• Deck fillers are fitted in recessed deck lockers to port and starboard.
• A Horizon Seafari SFC-900-2 240 vAC reverse osmosis watermaker is located in the engine space above the main engine. The watermaker is fitted with a remote control unit at the chart table. It has the optional automated fresh water flush to ease operation when in commission.
• The output of this unit is approx. 3,400 litres per day.
• A charcoal filter fitted to the fresh water output as well as to the fresh water flush input (to protect membranes from chlorine). The 5 and 25 micron pre-filters and charcoal filters are easily accessible from the engine room door.
• The unit was fitted in 2012 during the refit and has 159 hours of operation as at September 2015.
• An extensive stock of filters, membrane-pickling fluid and membrane-cleaning products are held on board.
• Maintenance carried out by crew in line with manufacturer’s recommendations.
• Nimrod also has a handheld water quality tester.
• Grey water flows from all sinks and shower trays to the grey water holding tank via dedicated sumps through gravity into sumps and 24vDC pumps out of sumps.
• Grey water tank discharge is via a Gianneschi 24 vDC pump or via deck suction for discharge to shore.
• All Whale Gulper 220 sumps pumps and associated float switched renewed during or since refit. One new spare sump pump and 2 float switches carried on board as well as complete service kits for the pumps themselves.
• A Gianneschi ECO MV-44 24vDC pump (48 LPM) grey water tank discharge pump was fitted in 2013 and serviced by agent in September 2015. Previously fitted pump of 2012 was inadequate.
• A new ITIM grey water tank sender and tank controller by ITIM Australia was installed in 2015. An override is fitted to enable pump out in the event of tank sender or controller failure.
• Output to black water holding tanks from all heads is via gravity. Black water tank pump out is via 24vDC pumps outboard or via deck suction for discharge to shore.
• Black water discharge pumps (Jabsco 50890-1100 24 VDC 19 LPM) and one new spare pump carried on board as well as complete service kits.
• The black water tanks senders and tank controllers are by ITIM Australia. They were serviced and recalibrated by ITIM in 2013. An override is fitted to enable pump out in the event of tank sender or controller failure.
3.5 Bilge Pumps
• The yacht has six bilge spaces located in forepeak, crew accommodation, main saloon, engine room, aft accommodation and lazarette.
• The forepeak and lazarette bulkheads are watertight.
• Each bilge space is fitted with a Rule 3700 24 vDC bilge pump with float-switch for automatic operation and high level alarm connected to main alarm panel at chart table and on deck. One spare Rule 3700 pump is carried on board.
• These bilge pumps can either be operated automatically or overridden by a switch in each bilge space.
• Celectron BW8 pump activity monitor installed in all bilge spaces with the display at chart table. This enables pump activity to be monitored as pumps may be coping with small leaks which do not trigger the high level alarm.
• A 550 litres per minute self-priming hydraulic Flomax bilge pump is fitted in the central bilge and can pump water from all six bilge spaces. This pump is powered by the generator or DC hydraulic pumps with or without the hydraulic PLC being operational. This is the main bilge pump but only used in emergencies. Serviced during 2012 refit.
• A manual emergency Whale Gusher 30 bilge pump is connected to the main bilge manifold.
• Each bilge space is fitted with a bilge alarm that sounds in the navigation station, main alarm panel and on deck.
• All bilge pump water activated switches and alarm senders replaced during 2012 refit.
• The main engine is fitted with a Racor 75/1000 MAX/2 primary fuel filter located between the day tank and the engine. (Run and standby filters are fitted with an easy switch over valve).
• A sensor for water in the engine fuel is fitted to the Racor filter unit and connected to the chart table alarm panel.
• The generator is fitted with a Racor 500 MA2 primary fuel filter.
• Spare primary and secondary fuel filters carried in onboard ship’s spares.
• New fuels supply and return lines installed as part of the 2012 refit.
• Tank selection manifold conveniently located at entrance to engine room. Emergency fuel shut-off valves located outside the engine room (They are easily accessed under the main saloon sole-boards)
• Deck fillers are fitted in recessed deck lockers to port and starboard.
• Fresh water is stored in four fresh water tanks located below the sole-boards at the aft end of the main saloon.
• Each tank is fitted with a tank level sensor with a per tank display located at the navigation station (New tank displays in 2012).
• The total fresh water capacity is 2,500 litres (440 gallons).
• Fuel is stored in two diesel tanks located below the sole-boards in the aft end of the main saloon.
• Each tank is fitted with a tank level sensor and a per tank output display located at the navigation station (new 2012).
• Cross-valves are fitted between the two main tanks to allow fuel tank balancing.
• The total fuel storage of two main tanks is 2,500 litre (440 gallons)
• The yacht is fitted with a single grey water holding tank located between the galley and the forward guest cabin on the yacht’s centreline.
• The capacity of this tank is 475 litres (104 gallons)
• The tank is fitted with an ITIM level sensor and output display. When a high level is reached, the pump is automatically activated and an alarm sounds to warn of pumping operation. The pump can also be manually activated at anytime.
• The tank was degreased and cleaned internally during 2012.
• The ITIM tank level sender was renewed in 2015.
• The tank vented in the mast above the first spreader.
• The yacht is fitted with two black water holding tanks of 225 litre capacity (49 gallons) capacity each and are fitted with an ITIM level sensors and output displays. When the tanks reach a high level, an alarm sounds but unlike the grey water tank, the pump is not automatically activated.
• Both tanks were cleaned internally during 2012.
• The tank is vented in the mast above the first spreader.
The yacht’s entire AC and DC system was replaced in 2012 and is comprised of new Mastervolt equipment throughout. The installation was overseen and signed off by Mastervolt UK main agent.
Two Mastervolt Masterview panels are fitted at the chart table to enable complete monitoring and controlling of all Mastervolt DC and AC systems. Additionally, a USB port has been fitted at the chart table to enable remote diagnostic direct from Mastervolt engineers in Holland or for further control via the Master Adjust software. The Masterview displays are user configurable and are currently configured as one panel for AC and one for DC systems.
During the 2012 refit, numerous upgrades and replacements to corroded parts of the electrical wiring were carried out to ensure trouble free operation.
DC Battery System
• The yacht has two DC electrical systems with separate battery banks (Service and Start batteries).
• The service battery bank is 24 vDC made up of two banks of 2 vDC Mastervolt MVSV 750 batteries connected in series to supply 24 vDC. Each bank consists of 12 x 750 Ah batteries (2vDC). These supply a total 1,500 Ah @ 24 vDC.
• The service batteries are either charged using the Mastervolt 24 vDC 150 amp alternator previously mentioned or two Mastervolt Mass 24/100 100 amp 230 vAC batteries chargers which can be operated individually or together.
• The service batteries are located to port and starboard of the keel for ideal weight distribution and are in dedicated vented compartments in accordance with MCA requirements.
• The engine cranking battery bank is 24 vDC made up of two Optima 8052-188 batteries connected in series to supply 24 vDC. Each battery delivers 75 Ah.
• The engine cranking batteries remain permanently charged using a Mastervolt Magic 24 vDC 20 amp DC to DC converter powered from the service batteries.
• The generator cranking battery is provided by a single 12 vDC Optima engine cranking battery Optima 8006-252 delivering 50 Ah. This battery was renewed in 2014.
• The generator cranking battery remains permanently charged using a Mastervolt Magic 24 vDC to 12 vDC 20 amp DC to DC converter powered from the service batteries.
• Engine and generator start batteries were relocated centrally on top of the keel during the 2012 refit and are in a dedicated vented compartment in accordance with MCA requirements.
• There is an emergency parallel switch between the service battery bank and the main engine batteries to start the engine if the main engine battery bank is flat.
• There is a further emergency parallel switch between the generator start battery and the main engine batteries for starting the generator if the generator battery is flat.
DC Charging System
• 2x Mastervolt Mass GI 24/100 100 Amp 230 vAC automatic battery chargers for charging the service battery banks.
• Chargers can be powered by either shore power or generator and charge output regulated and monitored from the chart table using the Masterview panels.
DC System Alternators
• Mastervolt 150 Amp 24 vDC alternator mounted to main engine for charging service battery bank. Charge regulated by Mastervolt 3 step ALPHAPRO charge regulator.
• Onan 35Amp 12 vDC alternator mounted to generator for charging generator start battery
General DC System
• 3 x DC control panels located in saloon, aft passageway and below navigation area.
• 4 x ALFATRONIX PV6I 24 vDC to 12 vDC DCO to DC converters fitted underneath chart table for 12 vDC equipment. 2 spares carried on board in ship’s spares.
• 1 x AC switchboard wired to segregate low power consumption. AC equipment capable of being operated from on board inverter for high power consumption equipment requiring either shore or generator power.
Shore Power Supply
• The capacity of the yacht’s AC shore power was increased during the 2012 refit from 32 amp to 64 amp in two separate 32 amp feeds. One is dedicated to the general supply of Nimrod while the second purely supplies the yacht’s air conditioning system. This ensures that there is plenty of AC shore power during high load consumption.
• Nimrod is fitted with two Mastervolt Mass GI 7 isolation transformers rated at 32 amps of continuous load at 230 vAC together with circuit breakers and earth trips.
• 30m marine grade shore power cables for each supply.
• Onan MDKAF 22.5 kw 230 vAC 50 Hz diesel generator, new 2012.
• The generator exhaust system consists of a factory water injection elbow leading to a Soundown water lock muffler. This enables silent on deck operation as the exhaust is discharged underwater at the rear of the keel. Ideal for when at anchor or in harbour!
• VDO analogue oil pressure, engine temperature, battery volts and generator hours fitted at chart table for ease of monitoring while in use.
• Automatic oil change pump fitted to generator sump.
• Generator hours – approx. 2510 as of Sep 2015.
• Maintained since installed by main agent in South of France.
• One Mastervolt Mass Sine 24 vDC 5 kW 230 vAC inverter.
• Inverter can operate fridges, kettle and Nespresso machine, icemaker, power sockets and engine room fan.