Marine link
 

Jefffboat And Aquamaster Design Z-Drive Propelled River Towboat

Inland shipbuilders Jeffboat and Aquamaster-Rauma, Ltd. have formed a cooperative R&D program to design a state-of-the-art river towboat utilizing Z-drive propulsion. Model testing, conducted during June and July, is the latest phase in a year-long joint design program.

l b take advantage of high omnidirectional thrust available from azimuthing propulsion units, potential designs were developed, models were constructed, and quantitative data was gathered which directly compared the performance of the new Jeffboat/Aquamaster towboat hull against conventional type rudder/fixed propeller designs. The resulting towboat design was developed in conjunction with a Finnish naval architect.

The vessel is designed to be powered by three Aquamaster units of equal size, equipped with the company's patented NSMB type nozzle, with a total absorption capability of 8,000 to 12,000 hp.

Tests on the design were conducted by shallow water vessel research experts VBD of Duisburg, Germany. Steering and flanking side forces of the design were reportedly 150 to 210 percent of the conventional vessel.

The new vessel also reportedly stopped a simulated tow in one-third the distance normally achieved by a conventional vessel. The strength of this design is the redundancy of propulsion units, which increase safety and "come-home" capability. Model test results enable the Aquamaster azimuth drive units to be specifically matched to the inland river towboat. Measured model hull wake fields and propeller loadings will be used to guide selection of mechanical and hydrodynamic drive details.

For more information on the towboat design Circle 81 on Reader Service Card




Pod Propulsion History

Alaska Marine Highway Finds Dual Purpose Vessel Justifies Cost
Aquastrada II To Be MTU-Powered
Cenac Repowers Pushboats With Lugger
Converted Tanker Uikku Delivered By Kvaerner Masa's Helsinki New Shipyard
Cruise Ship Design: Propulsion Choices, Space Optimization Key To Ship Profitability
Fast Ferry Business Seeming At Bazan
Ferry Contract Dispute Settled By Legislature
Gas turbines power up European ferries
GE Gets $60 Million Contract From NASSCO
Geared for success
Host Of Factors Conspire To Facilitate Bulk Market Stagnation
Innovation Links Modern Technology With Maritime Past
Jefffboat And Aquamaster Design Z-Drive Propelled River Towboat
Kvaerner Masa-Yards, Neste Convert Second Tanker For Arctic Traffic
M 32 Salts Drive KnppMaK
MAN B&W Offers Presentation Brochure On Alpha Propulsion Systems
Marshall Branson Builds OSRV; Building Two Vessels For South Korea
New Rescue Ship Class Fitted With Aquamaster Propulsion
Northrop Grumman Readies New Gas Turbine For Market
Orders & Innovation Drive Propulsion Gear Manufacturers
Orders & Innovation Drive Propulsion Gear Manufacturers
Peterson Builders Heads Development Of New Urban Commuter Ferry
Podded Propulsors Gain Wider Acceptance
Raytheon Wins $ 7 4 Million Navy/Air Force Contract For Combat Ik-aining System
Siemens, Schottel Team For Podded Drive Product
SSP Pod Approved For Service
Swath/Hydrofoil Hybrid Presented At Fast '95
Vessel: Zirfaea Yard: Bodewes Volharding Delivery: 1993
Wartsila Engine Unveiling: A New Contender In Hie 320-mm Bore Stakes
Yards, Suppliers Bring High-Tech To The Table
 
rss feeds | archive | privacy | history | articles | contributors | top news | contact us | about us | copyright