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No noise reduction
Reduce noise by 11-15 dB(A)
Subsea 7’s “Seven Pelican” is a unique high-performance
diving support vessel which has clocked up nearly
130,000 hours (2011) of operation in demanding
conditions all over the globe. Designed for intensive
inspection, repair and maintenance (IRM) programmes,
the “Seven Pelican” accommodates a crew of 108,
including air-diving teams and saturation divers.
Its three resiliently mounted bow thrusters and stern
thruster have run smoothly since they were delivered by
Brunvoll when the vessel was built in 1985.
Bow: 3 x LowNoise Tunnel Thruster SPA-VP 1,100kW
Stern: 1 x Tunnel Thruster SPA-VP 920 kW
Where thrusters run continuously for long periods,
thruster operation is increasingly considered as a normal
seagoing condition. This requires compliance with the IMO
Resolution A.468 – Code on Noise Levels on Board Ships.
High and variable noise levels have become an intolerable
problem on a ship where thrusters may run for as many
as 7,000 hours per year, and where extreme precision is vital
to quality, performance and safety.
This demand implies a new class of offshore service vessels.
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