Elliott Bay Develops New Tug Design For Crowley

Elliott Bay Design Group (EBDG), a Seattle-based naval architecture and marine engineering firm, has developed a new ship escort and assist tug design for Crowley Marine Services, Inc., of Oakland, Calif. Crowley plans to build two of the new-generation tugs, stationing one in Long Beach, Calif., and the other in Puget Sound; with delivery anticipated in the fall of 1996. The new boats will feature ABSclassed hulls and machinery, ABS Class 1 firefighting capability, and Voith-Schneider 36GII/200 propulsion units. The design features special acoustic insulation for crew protection and comfort, and the main decks inside the deckhouse are to be fitted with floating floors, with floating bulkheads and overheads in the d e c k h o u s e s t a t e r o o m s . The 120-ft.

(36.8-m) steel tugs will operate at 14 knots, each propelled by a pair of Caterpillar 306 diesels, rated at 2,750 bhp, driving the Voith- Schneider units.

"These will be truly state-of-theart ship handling and escort tugs," said Crowley Vice President of Engineering Maynard Williams; "based on research and experience, we've very carefully thought out their size and power to match their mission." For more information EBDG Circle 130 on Reader Service Card