Sea Discovery

Offshore Support Ship 'Polar King' in Service

Polar King, constructed in Vigo on Spain’s Atlantic coast by century-old shipyard Constr. Nav. Paulino Freire S.A. recently entered service for Norwegian owners GC Rieber Shipping of Bergen. This week this hi-tech ship was already setting about the work she was built for; offshore rig and multi-purpose platform support services, as well as research (with ROV operating capability) in the North Sea hydrocarbon fields.
The DP equipped Polar King is fitted with a diesel-electric propulsion system powered by 6 x MAN 9L21/331 main generator diesel engines that each produce 1,980 kW at 900 rpm, while for manoeuvring purposes there are a pair of TT 2400 DP CP tunnel thrusters by Rolls-Royce Marine AS – Propulsion Ulsteinvik.

DNV ‘Clean Design’
Classed by DNV with the notation ‘Clean Design’ the Polar King features measures that not only limit harmful air emissions and sea pollution, but also incorporates a 'defensive design' standard intended to limit the consequences of accidents. The notation includes class approval of:
- Fuel tanks protected against grounding damage
- Management of sewage and garbage
- Ballast arrangements
- Bunkering safeguards
- Eco- friendly anti-fouling treatment
- Emission-compliant combustion machinery
- Refrigerant handling
- ‘Green Passport’ inventory for recycling

Main Particulars
A clear foredeck, strengthened for helicopter landing, gives the 7,238gt, 110m LOA, Polar King a distinctive profile, while on the afterdeck there is a prominent 150t offshore AHC crane.
The fore part of the hull has increased scantlings to warrant the DNV ‘ICE-C’ notation, which means that she can operate in light ‘first year ice’ to gain access to ports which occasionally become frozen up.
A second, twin vessel – the Polar Queen – is scheduled for the end of summer 2011.

ROV Latest Technology
In a somewhat related piece of news, Saab Seaeye, world’s largest electric ROV supplier, has just come up with a new ‘Thinking ROV’ that can communicate remotely with operators and engineers anywhere in the world (online) through a gateway into its heart. iCON technology (the acronym denotes ‘Intelligent Control of Nodes’) enables each microprocessor (node) to report its status to the central control system for transmission. There is also an innovative self-correcting control ability.
For example, if a thruster gets entangled, iCON instantly recognises a load problem and shuts the malfunctioning unit down. At the same time it alerts the rest of the system so that the remaining thrusters automatically compensate and keep the ROV from spinning out of control.

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