When Sovcomflot needed OSVs capable of servicing the Sakhalin-2 development in the Russian Far East, it turned to icebreaker specialist Archtech Helsinki Shipyard for assistance.
Sovcomflot (SCF) operates in the sub-Arctic conditions of the Sea of Okhotsk and this environment requires a special kind of OSV. To service the Sakhalin-2 development, the experience of Archtech Helsinki Shipyard was utilised.
SCF ordered four vessels and as of the end of August 2018, all four had been delivered. The first three vessels, Gennadiy Nevelskoy, Stepan Makarov and Fedor Ushakov, are named for historical Russian naval officers and were delivered in 2017, with the fourth vessel, Evgeny Primakov, delivered in 2018 and named for the former Russian prime minister, foreign minister, foreign intelligence chief and Chairman of the Soviet of the Union.
As well as the more conventional tasks performed by OSVs, such as emergency evacuation, rescue and fire-fighting operations, oil spill response and platform support duties, the vessels will also protect the Sakhalin-2 project from the effects of ice. To meet the challenges posed by their operating environment, the vessels are capable of breaking ice up to 1.5 m thick, and are classified by the Russian Maritime Register of Shipping with Icebreaker 6, AntiIce and Winterization (-35) notations. Deck outfitting is largely under cover and lifesaving equipment is sheltered and fitted with protective covers.
All four vessels measure just over 104 m in length, with a width of 21 m and a draft of 7.9 m. While specific configurations vary, all of the vessels are capable of a maximum speed of 16.9 knots and are fitted with Wärtsilä engines, ABB Azipod azimuthing thrusters, Brunvoll bow thrusters and Gesab SCR exhaust gas treatment systems.
The vessels were designed to be environmentally friendly and meet IMO's Tier III NOx emission requirements. Along with scrubber systems, the vessels are also fitted with systems to decrease underwater noise levels. They all have an Eco notation from class.