19th November 2008
Two Asia's First Icebreakers for the Arctic Feature Steerprop Azimuth Propulsors |
Keppel Singmarine Pte Ltd in Singapore has completed two icebreakers for LUKOIL-Kaliningradmorneft. The first icebreaking vessel, the Toboy, was delivered to LUKOIL in August this year. The second vessel was named the Varandey on the 3rd of November.
Both vessels will operate in the Barents Sea of Russia. In the ice they will assist oil tankers sailing in and out the Varandey Terminal. Varandey and Toboy are designed for solid ice of 1.5 m and over 1.7m thick and operation in very low temperatures.
After hard competition Keppel Singmarine and Lukoil selected Steerprop Ltd. to build the main propulsors for the both of the vessels. They were confident on the knowledge of the experts of Steerprop to place the order to produce the world record geared azimuth propulsors for the Varandey.
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The Toboy - Multi-purpose Ice-Breaking Supply Vessel. |
Classification:
Russian Maritime Register of Shipping KMLU7[1]A1 Supply Vessel
Flag:
Russian Federation
Principal Dimensions:
LOA 81.60 m
Breath Molded 18.50 m
Depth Molded 11.20 m
Draft Maximuxm 9.10 m
Deadweight 2,168.8 ton
GRT 4,406 ton
Performance:
Service Speed 15.0 knots on open water
Speed in Ice 2-3 knots in 1.5m level ice with 20cm snow cover.
Main Propulsion System:
Main generator engines 3 x 4,320 kW
Propulsion Motors 2 x 5,200 kW
Azimuth Propulsors 2 x Steerprop SPO 4.0 ARC
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Steerprop SPO 4.0 ARC: |
TheMax. Power Input 5,200 kW
Input Speed Range 0…700 rpm
Propeller 4,000 mm diameter, open, 4-blades, detachable, stainless steel
Azimuth System 4 x 45 kW electric motors, frequency converter controlled
Azimuth Speed 1.5 rpm
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The arrangement of Steerprop SPO 4.0 ARC in the Multi-purpose Ice-Breaking Supply Vessel, Toboy.
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Photo courtesy of Keppel Singmarine |
| Keppel Singmarine has completed Asia’s first two icebreakers, built for one of the harshest marine frontiers on Earth, the Arctic sea. Seen here is Toboy on her sea trials.
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The Varandey - Multi-purpose Ice Breaker |
Classification:
Russian Maritime Register of Shipping KMLL7[2]A1 Icebreaker Tug
Flag:
Russian Federation
Principal Dimensions:
LOA 100.0 m
Breath Molde 21.7 m
Depth Molded 13.3 m
Draft Maximuxm 10.5 m
Deadweight 4.463 ton
GRT 7.338 ton
Performance:
Service Speed 15.0 knots on open water
Speed in Ice 2-3 knots in 1.7m level ice with 20cm snow cover.
Main Propulsion System
Main generator engines 4 x 5,760 kW
Propulsion Motors 2 x 8,400 kW
Azimuth Propulsors 2 x Steerprop SPO 4.5 ARC
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| Steerprop SPO 4.5 ARC |
Max. Power Input 8,400 kW
Input Speed Range 0…660 rpm
Propeller 4,500 mm diameter, open, 4-blades, detachable, stainless steel
Azimuth System 4 x 45 kW electric motors, frequency converter controlled
Azimuth Speed 1.5 rpm
Both SPO 4.0 ARC and SPO 4.5 ARC feature mechanical power transmission arrangement based on two stage gear assembly. The high precision, high power Klingelnberg bevel gears have excellent reputation of operation in extreme conditions.
The two stage gear solution contributes to
• enhanced torque transmission capability
• small lateral area for the lower propulsor body.
• engineering of reliable and proven bearing assemblies of the propeller shaft
The two 8,400 kW SPO 4.5 ARC units installed in the Varandey are the largest geared azimuth propulsors in the world. The record achievement is amplified by the high ice class requirements that are complied with.
Mr. Jarmo Savikurki, the Managing Director of Steerprop Ltd. states: “It is an honour to Steerprop Ltd. to be a member of the team building the Toboy and Varandey. We appreciate the trust of the ship owner and shipyard in Steerprop and we are proud of the results. Having built the record propulsors is a great milestone in our endeavour to be the producer of the azimuth propulsors for the most demanding applications. The developing gear technology facilitates today the materialization of even bigger, even higher power azimuth propulsors. Steerprop Ltd. will continue pursuing those challenging applications.”
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Upper and lower parts of the Steerprop SPO 4.5 ARC 8400kW azimuth propulsor for the Varandey on completion at Steerprop Ltd., Rauma, Finland.
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Photo courtesy of Keppel Singmarine |
| The Varandey, the multi-purpose ice breaker during the naming ceremony in Singapore on Novemeber 3rd, 2008. Photo courtesy of Keppel Singmarine |
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