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Concordia takes delivery of IMOIIMAX tanker

Written by Nick Blenkey
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APRIL 8, 2015 — Gothenburg, Sweden, headquartered Concordia Maritime has taken delivery of Stena Image, its first chemical and product tanker based on the IMOIIMAX concept. Its innovative technical design enables fuel consumption, when sailing at service speed, to be reduced by 10-20% compared with other vessels of the same size.

Delivered from Chinese shipyard GSI (Guangzhou Shipbuilding International) in Guangzhou today, the 50,000 dwt MR tanker, is equipped with 18 tanks of the same size, each with a capacity of 3,000 cu.m, able to load vegetable oils and chemicals as well as petroleum products.

The Stena Image, which will be named tomorrow, is part of a series of ten similar tankers, two of which will be owned by Concordia Maritime.

The IMOIIMAX concept was developed by Stena Teknik together with the GSI shipyard GSI, with which Stena Bulk placed an order for ten IMOIIMAX tankers in 2012.

The first tanker – the Stena Impression – was named at the beginning of February this year in Singapore and the last of the remaining eight tankers will be delivered in 2017.

All ten IMOIIMAX tankers will sail in Stena Weco’s global logistics systems, which already employ some 50 vessels.Some of the technical solutions that will result in more efficient energy consumption and greater logistic flexibility are:

Main engine auto-tuning: With an auto-tuning system, the combustion process in each cylinder is continuously and automatically controlled for optimal main engine performance.

More efficient boiler with recovery from multiple heat sources: The vessel is equipped with an exhaust gas multi-inlet composite boiler, one of the very first to be installed. This boiler not only recovers energy from the main engine’s exhaust gas but also recovers the exhaust gas energy from the auxiliary engines. In addition the boiler has an oil-fired section that can be used in port, thus avoiding the need to run the larger oil-fired boilers to heat the vessel. This, together with main engine auto-tuning and part-load optimization of the auxiliary engines, will result in very efficient energy consumption.

Recovery of propeller energy loss: All propellers lose some of the energy input in the rotating water behind the propeller. With the IMOIIMAX, the energy loss is recovered by fitting a Hub Vortex Absorbing Fin.

Aerodynamic design of the accommodations and bridge: The streamlined design of the accommodations and the bridge means that the IMOIIMAX is less affected by wind resistance than other similar vessels.

All cargo tanks are designed to accept any type of cargo the vessel can transport: An IMOIIMAX has 18 cargo tanks. They are all the same and are designed to hold a maximum of 3,000 cu.m, i.e. the maximum volume permitted for the special-type cargoes the ship can transport.

Effective tank-cleansing system: The flushing system installed ensures that the cleansing process is optimized and since four tanks at a time can be flushed, the time between discharge and loading can be minimized.

Technical data for IMOIIMAX tanker:
Length: 183 m
beam: 32 m
deadweight: 50,000 tons

“We are very pleased to take delivery of the Stena Image, which in many ways represents the new generation of chemical and product tankers, especially in terms of fuel efficiency, cargo capacity and safety”, says Kim Ullman, CEO of Concordia Maritime. “The Stena Image, as part of the IMOIIMAX concept, is a leader when it comes to these three aspects and sets a new standard in both our customers’ and our own interests.”

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