HamiltonJet HT900s for World’s Biggest High Speed Crew Boat

MarineNews
Friday, February 28, 2014

Waterjet manufacturer HamiltonJet recently got great news when four HT900 waterjets were selected for Incat Crowther’s latest project – a first-of-type 70 meter Catamaran Fast Crew Boat for operations in the Caspian Sea oil industry in Azerbaijan. When completed, this vessel will be the world’s largest high speed crew boat operating in the global oil industry. It will also be the largest vessel HamiltonJet has been involved in to date, and will further showcase waterjet’s performance and maneuvering benefits over other forms of propulsion in this demanding marine sector. HT Series waterjets feature a mixed flow pump with a greater nozzle to inlet ratio than comparable size axial flow waterjets. This provides high efficiency over the entire vessel speed range.

DP & Waterjets – a natural connection
The DP2 class vessel will have four control stations, each utilizing HamiltonJet’s MECS control system integrating with a DNV DYNPOS-AUTR dynamic positioning system. This system provides improved safety during crew transfers in conditions up to sea state 4. In designing this new 70m vessel class, Incat Crowther drew on its previous experience with the SEACOR CrewZer class of fast catamaran crewboats, with the fourth of these recently launched in the US. These vessels also utilize HamiltonJet waterjet propulsion (quad HM811s) and the combination of catamaran hull form and waterjets has proven very successful. HamiltonJet waterjets work particularly well in DP capable vessels, where the powerful 360 degree thrust forces generated by the jet’s split duct reverse deflector at any boat speed effectively act as an azimuth thruster. The effect of the waterjet maneuvering thrust is further enhanced with the wide spacing of the jet units in a catamaran configuration – two jets per hull – which provides even better control of the vessel’s stern and can even assist with sideways movement of the bow.

Propulsion: Power, speed and Performance, too
With four 2880kW MTU engines each turning 900mm diameter waterjets expected top speed is 36 knots with an efficient service speed of 30 knots at full load and 90% MCR. This speed performance will make the vessel more cost effective than helicopter transfer of crew and cargo, while the semi-SWATH hull design of the vessel, along with active ride control, will reduce stress on passengers so they arrive at an oil platform fit to work.

Options & More Advantages
A new optimized compact astern deflector retains the performance of HM series type ducts but with reduced weight and width for installation in narrow hulls. The deflector is actuated by two fully inboard hydraulic cylinders. The HT waterjet models are fitted with the JT nozzle steering system, also actuated by two fully inboard hydraulic cylinders. Shafts for both steering and astern deflectors are protected from wear and marine growth through the use of sealed rubber bellows on external shaft surfaces. Installation of HT series waterjets has been simplified by the use of a compression seal type transom plate arrangement, which allows for an increased tolerance for transom axial alignment. The transition duct extends from the flat surface aft of the intake opening to an area forward of the front intake screen mount (HT900 & HT1000 only). For an aluminum hull, the transition duct casting is surrounded by a section of 5083 aluminum plate so the shipyard does not need to carry out plate-to-casting welds. As the HT series waterjets utilize a tapered outside diameter impeller, the mainshaft axial position is adjustable in order to set and maintain impeller tip clearance. Aluminum anodes are used throughout HT series waterjets, with tailpipe internal anodes able to be replaced without removing the tailpipe. Like other HamiltonJet waterjet models a jet mounted and driven hydraulic power unit (JHPU), driven via multiple vee-belts from the jet coupling, is used for normal hydraulic operations. An optional auxiliary AC hydraulic pump (one per jet) is also available for actuation of the steering and reverse without the gearbox engaged. Hydraulic and thrust bearing oil cooling is provided by oil coolers integrated on the waterjet.



(As published in the February 2014 edition of Marine News - www.marinelink.com)
 

Maritime Today


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

Maritime Reporter June 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Cathelco Supply BWT System for Cable Laying Vessel

Cathelco have supplied a ballast water treatment (BWT) system for the C.C. Pacifique, a steel barge which is being converted into a cable laying vessel for Coastal Carriers BV of the Netherlands.

Denmark Adopts Digital Ship Certification

As of June 24, 2016, ships flying the Danish flag are being digitally certified, making Denmark one of the first countries to put an end to the 100-year-old tradition

Prince Charles Places Final Section of UK Aircraft Carrier

The second of the largest warships ever built for the U.K. Royal Navy, the Queen Elizabeth Class carrier HMS Prince of Wales, was given the royal seal of approval when HRH The Prince of Wales,

Marine Power

Wärtsilä to Power Two Indian Dredgers

Wärtsilä has won an order for two new 8000m3 trailing suction hopper dredgers being built for the Adani group, India's largest private multi-port operator. The

Panama Canal Officially Opens $5.25Bln Expansion

A 984-foot Chinese container ship was greeted with fireworks and cheers from a crowd that had gathered, when it made an inaugural passage through the newly expanded Panama Canal on Sunday,

Maritime Needs More Women Power

United Nations  International Maritime Organization (IMO) Secretary- General Ki Tack Lim pushed for the increased involvement of women in the seafaring industry

News

Huge Coke Drums Shipped from Spain to Louisiana

Intermarine, LLC, transporter of project, breakbulk and heavylift cargo, said it has transported four coke drums on the MV Ocean Freedom from Gijon, Spain, to New Orleans, La.

US Navy Accepts delivery of 7th Austal EPF

Austal USA’s Expeditionary Fast Transport (EPF) team finalized the delivery of USNS Carson City (EPF 7) to the U.S. Navy during a small document-signing event held onboard the ship on June 24, 2016.

Expansion Planned for Newport News Industrial

Huntington Ingalls Industries (HII) announced that its Newport News Industrial subsidiary will undergo a 52,000-square-foot expansion at its headquarters facility in Newport News.

Marine Equipment

BigLift Shipping Expands Heavy Lift Fleet

BigLift Shipping said it has ordered a third Happy S-type vessel. The new build vessel, to be named Happy Sun, will be identical to BigLift’s Happy Star and will

Cathelco Supply BWT System for Cable Laying Vessel

Cathelco have supplied a ballast water treatment (BWT) system for the C.C. Pacifique, a steel barge which is being converted into a cable laying vessel for Coastal Carriers BV of the Netherlands.

Austal Delivers Seventh EPF7 to US Navy

Austal Limited (Austal) informed that the U.S. Navy has accepted delivery of USNS Carson City (EPF 7) from Austal USA, during a ceremony held aboard the ship at Austal USA’s shipyard in Mobile,

Vessels

BigLift Shipping Expands Heavy Lift Fleet

BigLift Shipping said it has ordered a third Happy S-type vessel. The new build vessel, to be named Happy Sun, will be identical to BigLift’s Happy Star and will

Panamax Vessel Demand Keeps Baltic Index Up

The Baltic Exchange's main sea freight index, tracking rates for ships carrying dry bulk commodities, rose on Monday for a fourth straight session as higher demand

New Era of Global Trade with Expanded Panama Canal

The Expanded Panama Canal is now officially open for business.   During the official inauguration ceremony, Panamanian President Juan Carlos Varela and Panama Canal Administrator and CEO Jorge L.

 
 
Maritime Careers / Shipboard Positions Maritime Security Naval Architecture Navigation Offshore Oil Pipelines Pod Propulsion Ship Repair Ship Simulators 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: 0.1395 sec (7 req/sec)