Eastern launches first of two Z-drive tugs for Bisso Offshore

Written by Nick Blenkey
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Tug is built to built to Robert Allan Ltd RApport 2400 design

Eastern Shipbuilding Group, Inc., Panama City, Fla., reports that its Allanton facility has recently launched the C.D. White, the first of two 5,100 HP Z-drive ship handling tugs under construction for Bisso Offshore, LLC, a division of E.N. Bisso & Son, Inc.

Both tugs are being built to Robert Allan Ltd RApport 2400 design tugs, customized by the designer, the builder and owner to provide specific operational features including 63+ ton bollard pull, enhanced maneuverability and escort performance, better fuel economy, crew comfort, safety under the new USCG Sub-M requirements and reduced emissions meeting the new EPA Tier 4 emissions regulations.

The tug has main dimensions, molded, of 80’-0 x 38’-0 x 13’-2”.

Technical particulars are as follows:

  • ESG Designation: Hull 225
  • Fuel Oil: 28,000 USG
  • DEF/Urea: (2) x 850 USG
  • Potable Water: 8,750 USG
  • Total Horsepower: (2) x 2,549 HP @ 1,800 RPM
  • Bollard Pull (Predicted): 63 Metric Tons
  • Main Engines: (2) LA CAT, Caterpillar 3512E Tier 4 EPA/IMO III marine propulsion diesel engines
  • Main Propulsion: (2) Rolls Royce US205 P20 Z-Drives 
  • Main Generators: (2) Kennedy Engines Co. John Deere 4045AFM85 Tier 3 EPA certified Marine Auxiliary Diesel Generator Set, each rated at 99kW @ 1,800 RPM
  • Firefighting: (1) Counterfire ES-125-400, 1,500 gpm at 100 psi, diesel engine driven and 4” Stang remote controlled fire monitor
  • Forward Hawser Winch: (1) Markey Machinery, Inc. Model DEPCF-42 HS, Single Drum 40HP, Render/Recovery, Line Tension Display, Electric Escort Hawser Winch
  • Aft Capstan: (1) Markey Machinery, Inc. CEPB-40 5HP Tow Bitt Capstan
  • Tow Hook: (1) Washington Chain & Supply 90 Ton SWL tow hook, electric-air remote control, manual or remote release.
  • Regulatory: USCG Sub-M, Certificate of Inspection (COI) (Oceans), Designed and Built to ABS Class standards (but not classed under ABS rules)
  • Flag: United States of America
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