Efforts continue to improve the Modeling of Thrusters

Thursday, September 19, 2013
Robert Heerkink is project manager at the Ships department of MARIN, the Maritime Research Institute Netherlands.

MARIN uses thrusters in many projects. For a typical model scale, around 1:50 to 1:60, relatively small thrusters are required. Thrusters for these models are available ranging from 50 mm to 80 mm nozzle diameters.  In the past these thrusters were always modelled with a horizontal shaft.
By tilting the nozzle, the closest possible match was achieved between the client specifications and the modelled thruster for the basin tests.
Due to the ever-evolving process in improving the models, new thrusters were built witha 7-degree tilted thruster shaft.
Special gears were made for a reliable and durable thruster model and with these new thrusters it is still possible to mount nozzles with a slightly different angle. See figures for examples.
The newly built thrusters give clients the ability to choose a more accurate representation of the thrusters used during model testing.

Robert Heerkink is project manager at the Ships department of MARIN, the Maritime Research Institute Netherlands. MARIN offers simulation, model testing, full-scale measurements and training programs, to the shipbuilding and offshore industry and governments.

 

(As published in the September edition of Maritime Reporter & Engineering News - www.marinelink.com)
 

  • 7 deg. tilted axis,  5 deg. tilted nozzle

    7 deg. tilted axis, 5 deg. tilted nozzle

  • Model with mounted thrusters

    Model with mounted thrusters

Maritime Reporter October 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Offshore

Fourth Rig Delivered to Perforadora Central

Keppel AmFELS LLC, a wholly owned US subsidiary of Keppel Offshore & Marine Ltd (Keppel O&M), has delivered the jackup rig, Coatzacoalcos, to Mexico’s Central Panuco S.

Woodside to Pick up Moroccan Acreage

Woodside advises that it has entered into a contract for an exclusive Reconnaissance Licence (RL) with the Office National des Hydrocarbures et des Mines, the

Strategy Can Maximize UKCS potential

Companies operating in the North Sea require a cultural shift to make the most of the its potential, according to a new report from Deloitte, the business advisory firm.

Navigation

MSC Approves SOLAS Amendments

SOLAS amendments to make IGF Code mandatory approved by Maritime Safety Committee   The International Maritime Organization’s (IMO) Maritime Safety Committee (MSC),

Night Moves on America's Waterways

Overnight operations are certainly not unusual on America’s inland waterways, but that doesn’t make them any less hazardous. Onboard activities that seem so straightforward

Avoiding the Edges of the Sea

Mariners do best when they avoid the edges of the sea – the shoals, rocks, and other hard spots.  Coming into contact with the edges of the sea at other than a

Marine Power

ClassNK Approves Niigata Dual-fuel Engine Design

Classification society ClassNK has granted approval to the design of the new 28AHX-DF dual-fuel engine developed by Niigata Power Systems Co., Ltd. The new engine

Karl Senner Inks Distribution Deal with Electronic Power Design

Karl Senner, LLC (KS) has reached a new strategic representation agreement with Electronic Power Design (EPD). Karl Senner, LLC now represents EPD in the United States marine and offshore Markets.

Seacor Takes Delivery of 10,800 HP Crewboat

Seacor Marine is building ever larger and more powerful mono-hull crew/supply boats. The first of these to be delivered is the 202x34-foot Alex F. McCall with some very impressive statistics.

Naval Architecture

Production Begins on Sovcomflot’s New MPSV

Arctech Helsinki Shipyard started production of the new icebreaking multipurpose supply vessel   The production of the icebreaking multipurpose supply vessel

Glosten Designing Vigor’s Alaska Class Ferries

Glosten using Nupas-Cadmatic software for Vigor’s Alaska Class Ferry project   Seattle-based naval architecture consultancy Glosten has joined the list of North

Bollinger Delivers 11th FRC to the US Coast Guard

Bollinger Shipyards, Inc. has delivered the William Trump, the 11th Fast Response Cutter (FRC) to the United States Coast Guard.   The announcement was made by Bollinger Chief Operating Officer,

Dynamic Positioning

Kings Point Student Earns NMRA Scholarship

The National Marine Representatives Association (NMRA) recently awarded its second $500 scholarship to a student pursuing education in the marine industry and maritime trades.

Damen to Refit Helix Well Intervention Vessel

After having docked and repaired the MSV Seawell in 2012 and DSV Well Enhancer earlier this year, Damen Shiprepair Vlissingen (DSV) was contracted by Helix UK to

COSL Takes Delivery of New Semisub

China Oilfield Services Limited saw successful delivery of the deepwater semi-submersible drilling rig COSLProspector it invested in and commissioned to build in Yantai, Shandong today.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Standards Navigation Offshore Oil Pod Propulsion Port Authority Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | terms and conditions | 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: 0.2011 sec (5 req/sec)