The first of a new 90 ft class of five vessels for the Swedish Coast Guard Service was recently delivered to the port of Falkenburg, west Sweden with a further four under construction at Baltic Workboats AS, Estonia .
The vessels are designed for main duties of maritime surveillance, border including fisheries control, protection of the environment, rescue and civil protection including firefighting, monitoring and diving operations.
The 52 t vessels have an LOA of 90 ft (26.5 m), beam of 20 ft (6.2 m) and draft of 5 ft (1.5 m). Unsual for its size, there is a triple pod propulsion system comprising three Volvo Penta IPS 1050 steerable pod drives with D13-800 diesels each rated at 800 hp at 2,000 rpm (Rating 4 - light commercial application).
Synchronisaton and control of the three engines and drives is carried out by the electronic EVC-E system which is connected to an Integrated Alarm Monitoring and Control System (IAMCS) through a newly developed from a Volvo Penta interface.
In addition to extremely good maneuverability using a joystick command for both speed and docking, a major benefit of IPS is reduced fuel consumption with savings of up to 30 per cent claimed by the manufacturers. The lower fuel consumption over the whole speed range not only produces substantial fuel cost savings but also reduced CO2 and NOx emission. The engines are already meeting the EPA tier 3 emission levels in force 2014.
The vessel has a crew of two and can accommodate up to five crew. There is one bow thruster of approximately 30 hp (22kW). Top speed at full load is 32 kn and the 5,000 liter fuel capacity gives a range exceeding 600 nm.
The engine room showing the three Volvo Penta D13 engines
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