Bay-Houston Orders Z-Drive Tug

Wednesday, November 22, 2006
Bay-Houston Towing Co. contracted with Orange Shipbuilding Co., Inc. of Orange, Texas to produce a second generation Robert Allan Ltd. designed Z-Tech tug. The design offers:

· The forward deck (over the skeg) has a low, flat sheer, creating a spacious, relatively flat and safe working deck, without any obstructive anchor chains, etc.

· For "sea-going" operations, the Z-Tech tug works astern in tractor mode, so the shape of this part of the hull is more rounded in plan than would typically be seen in an ASD design. There is no appreciable loss of speed in this direction of operation. The increased flare and freeboard at the "aft" end is simply to ensure a drier operation when towing in this direction.

· Only one winch is required for both harbor and coastal towing operations. When towing long distances, the Z-Tech will simply tow in tractor mode going "astern".

· The low sheer forward, coupled with the aft bias of the deckhouse and wheelhouse enable the Z-Tech design to work under large overhanging ship flares.

The vessel will be Orange Shipbuilding Hull H-391. The tugs will be 98.5 feet long, with a beam of 39.3 feet, a hull depth of 16.4 feet.

As in the first Z-Tech Bay-Houston Towing Co. ordered, the tugs will be powered by two of Caterpillar's new 3516C high power engines, delivering 3150 hp each. At 6300 hp, the tugs will be the most powerful docking tugs on the Texas coast. The vessel is designed to produce in excess of 75 metric tonnes of bollard pull. The Caterpillar engines are being furnished by Mustang Cat Power Systems, the authorized sales, parts, and service Caterpillar Dealer for the marine marketplace on the Texas Gulf Coast. Mustang Cat Power Systems is a sub-division of Mustang Machinery Company, Ltd. headquartered in Houston. The Caterpillar engines will be mated to Schottel drives, the Model SRP-1520 driving 106 inch (2,700 mm) stainless steel propellers. These drives are rated at a combined 6300 horsepower. Markey Machinery Company Inc. will provide the bow winch, a Model #DYSF – 52 Escort Line Winch. The winch has an automatic render/recover mode and will be equipped with an application specific Markey tension meter. The winch will have a brake capacity of 500,000 pounds.

The tug will be built to FiFi1 standard, and will be equipped with two Caterpillar C18 engines powering twin fire pumps each rated at 5300 gallons per minute, with water mist capability built in.

All engines on the vessel, including main propulsion, fire pumps, and generators are EPA Tier II compliant.

Maritime Today

The Maritime Industry's original and most viewed E-News Service

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


USNS Maury Completes Acceptance Trials

USNS Maury (T-AGS 66) completed Acceptance Trials, November 6, following a week of extensive ship tests and underway events, included testing of major propulsion,

MacGregor Wins Orders for Pusnes Deck Machinery

MacGregor, part of Cargotec, announced it has secured orders for a series of Pusnes deck machinery packages for several shipowners. The Pusnes equipment has been

Two New Crewboats for ISS

Maritime and logistics service provider Inchcape Shipping Services (ISS) has expanded its launch fleet with two more fast crewboats, bringing its total fleet size to 18 vessels.

Maritime Contracts Maritime Security Naval Architecture Navigation Pod Propulsion Salvage Ship Electronics Ship Simulators Sonar Winch
rss | archive | history | articles | privacy | 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: 0.0703 sec (14 req/sec)