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J.M. Martinac Shipbuilding in Tacoma, WA, United States, has been building ships since 1924. The company started with fishing vessels, and over the years has built more than 300 vessels of various types. Martinac’s latest project, the Northern Leader, is the largest longliner ever built in the US and one of the largest in the world. It is also eco-friendly. The propulsion is powered by propellers supplied by Schottel, a long-term customer of Vacon. This is the first time Z-Drives have been installed on a longliner. The two Schottel Z-Drive rudder propellers are each controlled by a 1,000 kW VACON® NXP Liquid Cooled drive, and one Schottel tunnel thruster is controlled by a 300 kW VACON NXP Air Cooled drive.
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VACON CASE STUDY VACON PROPELS NORTHERN LEADER
www.vacon.com1
Photo courtesy of J.M. Martinac
VACON PROPELS NORTHERN LEADER
CLIENT NAME: J.M. Martinac ShipbuildingSEGMENT: Marine & OffshorePRODUCTS USED: VACON® NXP Air Cooled, VACON® NXP Liquid CooledLOCATION: Tacoma, WA, USA
VACON CASE STUDY VACON PROPELS NORTHERN LEADER
www.vacon.com2
KEY FACTS OF CLIENT: • J.M. Martinac Shipbuilding in Tacoma, WA, has been building ships since 1924. The company has built over 300 vessels of various types.• It specializes in the design and construction of vessels up to 76 metres long.• Jensen Maritime is a Seattle-based Crowley company which has provided full-service naval architecture solutions for over 50 years.
VACON CASE STUDY VACON PROPELS NORTHERN LEADER
www.vacon.com3
CHALLENGE: • J.M. Martinac’s latest project is the construction of the Northern Leader for Alaskan Leader Fisheries. • At 56 metres and weighing 1600 tons, it is the largest longliner ever built in the US, and one of the most eco- friendly commercial fishing vessels to be constructed.• The ship is designed by Jensen Maritime to cause minimal impact on the ocean’s ecosystem, with the lightest possible fossil fuel footprint.
VACON CASE STUDY VACON PROPELS NORTHERN LEADER
www.vacon.com4
SOLUTION:• Propulsion uses two propellers supplied by Schottel, each powered by a 1 MW VACON® NXP Liquid Cooled drive, and a Schottel tunnel thruster propelled by a 300 kW VACON® NXP Air Cooled drive.• Drives selected are regenerative active front-end units suitable for applications where low mains harmonics are required.• Northern Leader, a state-of-the-art fishing boat, was christened in Seattle, WA, USA, on July 31, 2013.
VACON CASE STUDY VACON PROPELS NORTHERN LEADER
www.vacon.com5
TESTIMONIAL:“VACON® NXP drives with active front-end (AFE) technology were chosen for their optimal performance, compact footprint and ability to minimise harmonic distortion to vessel systems. Combined with the Schottel Z-Drives for enhanced control of the ship, they give the captain virtually seamless power on tap when needed.”
Joe MartinacPresident of JM Martinac Shipbuilding
FOR FULL STORY:http://www.vacon.com/Vacon/media/References/Vacon-propels-Northern-Leader-/
