The Borneo Princess - A First Class Catamaran

OES having a very broad experience and also very innovational in the offshore Oil and Gas business on many different types of vessels, a general love for the Ocean combined with the personal interests of John , Sean, and Bill Lincoln involved in pleasure diving and sailing resulted in the Lincoln's developing a new hybrid of a vessel, a motor sailor catamaran yacht which serves many roles including a shallow water dive support, survey, crew boat, transport ferry, fast naval small craft and international sailing vessel.

The Vessels are completely designed and built by OES and its subcontractors. The first one produced is called the Borneo Princess and was built at OES facilities in Balikpapan, Kalimantan on the island of Borneo. It was decided to limit the length to 24 meters and can therefore be captained by the owner or owners representative in most countries without any special captains certification. A Catamaran twin hull was selected on the basis of stability, space and comfort. A bonus is the hull speed, the maximum reasonable speed of a vessel before a huge power must accompany an increase in speed associated with the vertical climb angle riding up the bow wave, of a catamaran is much more than that for a mono hull as one hull rides the bow wave depression of the other. The hull speed is 15 knots. A width of 10 meters was selected which provided two 2.5 meter wide hulls and state room dimensions spaced 5 meters the width of the main entertainment and dining area.

A steel hull was selected on the basis of strength, reliability and the ease at which attachments can be added or deleted by welding. Aluminium is not a reliable material as it ages, weakens, cracks and undergoes excessive galvanic corrosion in very salty water like in the Middle East and in the presence of any steel. In addition aluminium vessels bounce around too much and are noisy and conduct too much heat away. Most Oil Company and Marine Classification Societies also require steel hulls. With steel the only drawback is ugly red rust and so a very comprehensive sandblasting and marine coating system was adopted. A thick coating of inorganic zinc silicate which acts like an anode and also like galvanizing was applied followed by epoxy topcoat and polyurethane final coating. Many other components like the mast, boom and stay wires are all hot dipped galvanized. No aluminium at all is used except for the window frames and they are heavily insulated from the steel.

Unlike a sailing vessel twin large reliable, powerful and fuel efficient 450 Horsepower diesel Caterpillar engines were added for reasonable speed and power. The cruising speed is about 13 knots. The twin propellers are placed in Kort Nozzles for excellent manoeuvrability and are also recessed under the keel and combined with the keel plate design, grounding of the vessel or floating debris will not damage the propellers or hull. The Borneo Princess has 4 fuel tanks with 15 tonne total capacity allowing a range of about 4000 nautical miles. Fuel can be easily transferred by pumps to either side to assist with ballast while under sail. The vessel has twin 17 kw Caterpillar diesel generators a robust central air conditioning system with water cooled condenser and a 100 gallons per hour fresh water maker. 10 tonnes of water storage allows extra ballast that can be transferred from side to side for fast sailing. There are two large state rooms with Queen beds and four 2 man bunk rooms. There are two large bath rooms with showers and toilet and hot water. A galley is equipped with a four burner stove, double sink, large refrigerator, freezer, microwave, dining table and walk in storage pantry. The main living and entertainment area features a 12 man dining table, a bar, four couches and lounges, reading lights and a 48 inch TV screen with hundreds of DVD’s and a reading library.

The Borneo Princess has ABS classification for up to 50 miles offshore for commercial operations. Windows are all thick shatter proof glass and slightly tinted for heat conservation. There are three water tight doors and two emergency escape hatches for the front bedrooms. In total there are 10 water tight compartments such that if a main one is flooded on one side or two for both sides the vessel will not sink. The bow section has a double bottom not through design but by default as OES did not like the shape of the first bow and built another on top.

The vessel as a sailing vessel is a sloop and is designed to sail in 40 knot winds with both sails fully out and with out opposite side ballast. The 24 meter high mast and 12 meter long boom are high tensile steel and hot dip galvanized The wind load under this condition is 20 tonnes and the vessel list approximately 9 degrees. A safe limit of 7 degrees will be imposed however.

The vessel comes with a comprehensive, state-of-the-art instrumentation and control technology. It is outfitted with DGPS, satellite phone and internet, weather reports, SSB and VHF radio, sonar, radar and an automatic pilot system with alarms for possible concerns with other shipping traffic or changes in water depth. For additional safety a 16 man life raft and 13 man inflatable boat are also supplied. A sextant, chronometer and paper charts provided in the event of failure of DGPS. Emergency rations, water, food, batteries, fishing gear, hats and sun block also provided for 12 people.

The basic dimensions, hull thickness and weight can be changed for any future vessels without any fundamental departure from the design concept. For example 2 x 1200 HP engines and a lighter vessel say 25 tonnes instead of 50 tonnes will allow a speed of almost twice or about 30 knots which may be esirable for crew, military or ferry boats. The width and length can be increased up to 20% for those that can afford huge comfort and desire a modified floor plan.


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