One Out ... Two In

Thursday, October 10, 2002
When Dunlap Towing of LaConner, Wash., bought the James T. Quig a couple of years ago, they renamed her the Rosario. Now the good tug is getting a lot more than a name change. The boat, built in the late 1970s or early '80's, originally had a single engine installed but she had been designed with enough beam for a twin engine installation. She has been operated with a single 900 hp main but now she will get two Cummins KTA38 main engines to be operated at 800 hp each to nearly double the boat's output to 1,600 hp. The beamy 64 x 21-ft. boat can easily handle the two engines. With the beam carried well aft, Dunlap's operations manager Gordon Taylor explains there is lots of space in the lazarette to accommodate the working rams for the twin rudders that will be added behind the two new 70-in. diameter five-blade propellers. The props will be mounted on 6.5-in. shafts coupled to Twin Disc, TD5205, 6:1 ratio gears on the main engines. Calculations show the repowered boat doubling its bollard pull to about 37,000 pounds. The weight of the engines, shafts and gears will also be double that of the single engine, but Taylor doesn't expect more than a couple of inches increase in the draft on her nine-ft. molded depth hull.

Work on the conversion will take place at Dunlap's Everett, Washington facility and at the nearby Hansen Boat Company shipyard this October and November. While the vessel's deck equipment will remain as is, the gen sets will be changed out for new Cummins powered generators.

Maritime Reporter March 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Legal

Feds Delay LNG’s Port Ambrose Application

The US Coast Guard and the US Maritime Administration (MARAD) have temporarily suspended their review of the proposed Port Ambrose deep-water LNG import terminal.

Ukraine Arrests Turkish Ship for Visiting Crimean Port

Turkey owned merchant ship flying the flag of Tuvalu was arrested by Ukrainian authorities over a visit it made to a port in Crimea, reports Reuters. The ship's captain detained.

Viking Bags Charter Deal for AHTS Brage Viking

Viking Supply Ships has entered into a contract with an Oil major for the charter of “Brage Viking” commencing 1stof April 2015. The duration is for 2 years and 8 months firm,

Ship Repair & Conversion

Austal Graduates 48 4-Yr Apprentices

Austal USA combined two classes to graduate a total of 48 members of Austal’s cutting-edge four-year apprenticeship program yesterday at a formal ceremony held at the Arthur R.

BAE Systems to Expand San Diego Shipyard

BAE Systems announced it will invest approximately $100 million to expand drydocking capabilities at its San Diego shipyard.   The investment, which will include

Washington State Ferry Tacoma Returns to Service

Washington State Ferry M/V Tacoma will return to work on the Seattle/Bainbridge Island route starting March 28 after suffering electrical damage last summer.   The

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Navigation Offshore Oil Pipelines Port Authority Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2604 sec (4 req/sec)