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New RAscal Tug For United States Navy

Photo: Robert Allan Ltd.

Posted by Michelle Howard

Modutech Marine has awarded a contract to Robert Allan Ltd. to design a new version of the commercially successful RAscal 1800-Z tugs for the United States Navy.

The new RAscal tug (with an option for one more) will be built by Modutech Marine Inc at their facility in Tacoma.

The design for the US Navy will include updates to suit new EPA Tier 4 engines and associated systems, extensive fendering above and below the waterline to handle US Navy surface ships, submarines and barges as well as incorporating feedback from operators of the existing Z-Tech 4500 tugs. Wherever possible commonality in arrangement and systems to the existing Navy's tugs Z-Tech 4500 tugs is being utilized to minimize training hours. The tugs are configured essentially as "day-boats" but also provide accommodation for a crew of up to four persons. Construction of the first tug is to commence in 2020.

The new tug will have the following particulars:

  • Length Overall: 19.2 m (63'-0")
  • Beam, Molded: 9.4 m (30'-11")
  • Depth, Molded: 3.5 m (11'-6")
  • Power: 2 x 970kW (2 x 1,300 hp)
  • Bollard Pull: 30 metric tons minimum


Dec 19, 2019

 

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