Ship, like no other - Ramform Titan-class
Geophysical methods technology of survey,using seismic vessels is associated with controlled transmission of acoustic energy, in most cases airflow under high pressure from equipment, similar to guns, drawn shortly after the ship. After the repulsion of the air from the seabedare recorded, energy and power losses on the way from the bottom to the sea surface. Processing these reflections produce a synthetic image of the geological structure of the Earth
The actual reading of data is done by seismic unit, which is called, streamer. The surface of this device is filled with many "hydrophones" associated with marine equipment with long cables, sometimes many more than six nautical miles, the number of which is reciprocal.
Depending on the type of survey to be carried out, 2D, 3D or 4D, streamers, can be increased from 1 to a whole number of 14, and if necessary, increase the number of the guns, which shoot an airjet.
Major role in this type of vessels have a compressed air pressure of which ranges from 150 to 22 bar, such as the cooling system flow can reach 1600 m3 / h.
Presented by the Norwegians of Polarcus, last year seismic vessel, Polarcus Amani is the equivalent of the much discussed Triple E container project ofMaersk. The dimensions of the ship are 92 meters long and 21 meters wide, the length between the perpendicular axes of the bow and stern is 84.96 m, maximum draft -7.5 m. Polarcus Amani is designed with a DWT of 7,709 tons, deadweight 4,472 tons and a maximum mooring download of 125 ton. Interestingly the ship is actually a characteristic of the new trends in shipbuilding that such ships is called. X-BOW,which provides continuous and acute form bows on the front. The design allows the vessel to beextremely stable in the large waves and maintain high speed and low rolling resistance in order toreduce fuel consumption. The ship is equipped with a helicopter deck andnumber of welfare facilities for the crew.
With a capacity of 12 to 14 patented Sentinel Sercel streamer, tracking system outputs shoot a compressed air Seamap GunLink 4000. Propulsion complex vessel consists of a variable pitch propellers with an output of 4400 kW, to as Electrical System care of four Wartsila diesel engines with an output of 1710 kW each. In addition, the ship features a 240kW emergency generatorand two bow thrusters.
As it is modern and very functional, Polarcus Amani remains a step back in the race and the fierce competition in the market of the future are the largest competitor, namely Titan-class Ramform.
Ship, no one until now, these are just some of the superlatives with which the proud owners of PGS, describe their remarkable project. The unique hull shape Ramform originally took from a the Norwegian naval ship, Marjata.
Sinusoidal waterline allows stable motion behavior of the beam, the larger part of the deck at the rear of the ship is ideal for installation and downloading of various facilities and offers generous interior capacity. PGS acquisition of the rights to the vessel design and Ramform Explorer launched in 1995 with 10 winchsufficient to tow10 seismic buoy. The moment the ship is the "battlefield" he immediately overwhelm all 3D seismic testing for performance and durability. Undoubtedly profile Ramform vessel typical with incomparably Broad rear deck. Ramform is the ultimate platform for effective and safe seismic operations in all conditions and environments. Ramform eight ships are now in operation around the world. In 2010 Ramform Explorer is equipped with two additional vinchai increase its capacity to 12 GeoStreamer.
In Ramform Titan-class ships, however, things are different. With a length of 104 meters and a width of 70 goals in the aft end, this kind of ships are equipped with a remarkable 22 to 24 seismic buoy with maksimanla cable length of 12,000 meters each. A maximum speed of 16 knots thanks to its six engine with an output of 3,800 kW each and able to meet seismic studies lasting up to 150 days without having to go out on the land. The construction of the first two ships of this class of the company began this year, with two more expected to be completed, commissioned in 2015.