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Offshore Support Journal

Ice-class AHTS embarks on charter with Gazprom

Mon 19 Sep 2016

Ice-class AHTS embarks on charter with Gazprom
Aleut is the first of three Havyard 843 ICE anchor handlers for Femco

Havyard in Norway has a long history building ice-class vessels – among the latest are three Havyard 843 ICE class units for a client in Russia

November 2015 saw Havyard Ship Technology in Norway conduct a naming ceremony for the first of three icebreakers, Aleut, which it is building for Femco in Russia. The contract to build the Havyard 843 ICE icebreaking anchor-handling tug supply (AHTS) vessels was signed in November 2013.

After the naming ceremony, Aleut sailed to Murmansk in Russia to load equipment and provisions before heading for the Prirazlomnoye field, which is situated between the Russian mainland and Novaya Zemlya. Aleut is operating there having been chartered by the Russian oil company Gazprom. Two icebreakers Havyard delivered in 2006 also work in the field.

The Havyard 843 ICE is based on the designer’s 843 AHTS vessel type, strengthened for operations in ice conditions and adapted to feature an icebreaking bow instead of the bulbous bow of the base type. The primary role of the vessel will be that of any AHTS vessel, but it is also equipped for standby operations for oil pollution protection and rescue services. The icebreaker modifications and other adaptations allow the ship to claim DNV GL ice-class Icebreaker ICE-10 and Winterised Cold (-30°C) notations and on a practical level permit the vessel to break ice up to a metre thick. Havyard hopes the design will prove attractive to other operators as exploration of Arctic waters increases.

With regard to dimensions, the Havyard 843 ICE is 86m long with a beam of 19.5m, depth of 7.75m and maximum draught of 7.25m. The beam is identical to the Havyard 843 AHTS vessel, but the length and draught are higher than the 81m and 7m of the conventional vessel.

The added length and draught translate into a larger deck cargo area of 600m2 as opposed to 560m2 and greater capacities for fuel, ballast, mud, brine and other products, although the capacity for recovered oil is lower. When used as a standby rescue vessel, the Havyard 843 ICE has capacity for 200 survivors.

The remaining two vessels in the Havyard-designed series, Normann and Pomor, were launched in April 2016 by Cemre Shipyard and Tersan Shipyard in Turkey, who were entrusted with construction of the hulls of the vessels. After launching, the hulls were towed to Norway for fitting out by Havyard. At the time of writing, they were due to be delivered in the fourth quarter of 2016.

In addition to being advanced anchor handling vessels with platform supply functions, Aleut, Normann and Pomor are designed and built to operate under extreme conditions of the type routinely encountered in the Arctic. The ships have icebreaking class and installed power (DNV ice-class Icebreaker ICE-10) sufficient to enable them to break ice 1m thick at 3 knots. They also have a de-icing system designed to enable the vessels to operate in temperatures as low as -30°C. During trials, Aleut’s speed was measured at 16 knots, with a bollard pull of in excess of 200 tonnes.

Norwegian Electric Systems delivered a wide-ranging electrical package for the icebreaking vessel, including shaft generators, auxiliary generators, electric motors and starters for the thrusters, numerous transformers, de-icing equipment and other items of equipment

The Russian owner also recently took delivery of a SPA150 design AHTS, Katun. The vessel was built by Sinopacific Shipbuilding Group in China and is the third in a series of four vessels that Femco ordered based on a design from Shanghai Design Associates, Sinopacific’s design team.

Owner Femco
Designer Havyard 
Builder Havyard 
Length oa 86m
Breadth 19.5m
Draught 7.25m
Speed 16 knots
Bollard pull 201 tonnes
Anchor-handling winch 250 tonnes
Accommodation 34

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