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Wednesday, April 3, 2019 

Gulf Island Shipyards has completed the second of ten tugs to the Z-Tech 30-80 design by Robert Allan Ltd (RAL) of Canada, five of which were ordered by Suderman & Young Towing Company.

The tugs will operate in ports on the Texas Gulf Coast for G & H Towing Company. The Z-Tech 30-80 tug Ted C Litton evolved from the previous Z-Tech 7500 design for Suderman & Young. Designed and built with a sponsoned hull form, escort capability of the tug is significantly enhanced.

The design incorporates the handling and operational characteristics of both Z-drive tractor tugs, Azimuthing Stern-Drive (ASD) tugs and the RAstar series hull form. The new Z-Tech series tugs are intended for operation primarily in major ports and marine terminals. It emphasises safe and capable operation of ship-handling operations with large ships, particularly those with extreme flares. Reflecting the need to work in either a push or pull mode under the flared ends of large container ships and car carriers, the Z-Tech has a relatively low forward sheer, and a wide, heavily fendered bow.

The tugs were designed and constructed to comply with all applicable Rules and Regulations of ABS ✠ A1 Towing Service, ✠ AMS, Escort Service, Fire Fighting Vessel Class 1 and all applicable US Coast Guard regulations including Subchapter M

Main propulsion comprises a pair of Caterpillar 3516E, EPA Tier 4 certified diesel engines, each rated 3386 bhp at 1800 rpm, and driving a Schottel SRP 510FP Z-drive unit with 2800mm propeller. The tug is fitted with a Fire Fighting 1 system with two FFS 6200 gpm pumps each driven by a Caterpillar C18 engine. Bollard pull, ahead, is 84.45 tonnes, and free running speed, ahead is 13 Knots. The electrical plant consists of two identical John Deere 6068AFM85 diesel gensets, each with a power output of 125 eKw 480V, 3-Ph, 60Hz.

The customised general layout of the tug represents more than a decade of cooperation by RAL and the owners. The Master and Chief Engineer’s cabin along with galley and mess are located on the main deck while two cabins for four crew members are located on the lower deck.


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