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Friday, January 19, 2018

Bow Thruster News

OSD Rolls Out New Harbor Tug Design

Azistern 2870 (Photo: OSD)

Offshore Ship Designers (OSD) has launched a new tug design as part of its expanding portfolio of fuel-efficient vessels. The 390 gt Azistern 2870 harbor tug has a hard chine hull form which optimizes energy-saving during transit and results in a very low wash. It has a bollard pull of 70 metric tons and a maximum speed of 12 knots. Providing accommodation for six persons, it has an overall length of 28.3 m, and a breadth of 11.5 m. The Azistern 2870 has been designed with multiple deck equipment options, the installation of which are dependent on specific end-user preference.

Yanmar Rolls Out New Marine Power Offerings

3JH40 inboard engine (Photo: Yanmar)

Yanmar has already introduced several new products for the marine market in 2018, including a new common rail inboard marine diesel engine touted as the world's smallest, higher horsepower offerings in its mid range series, and expanded joystick controls. Yanmar Marine International has launched the latest addition to its family of new generation common rail (CR) diesel engines, the compact Yanmar 3JH40 inboard engine, at boot Düsseldorf. The three-cylinder 3JH40 has been developed as the marine industry’s smallest CR inboard diesel engine, Yanmar said.

On-site Bow Thruster Overhaul Avoids Drydocking

When the bow thruster unit of a 348-meter container vessel needed to be overhauled, Hydrex sent a diver/technician team to the ship to remove the unit on-site and reinstall it again two months later after it had been overhauled. The operation was performed in stages at several locations to allow the vessel to keep to its sailing schedule. Together with all the necessary equipment, the team first travelled to Rotterdam where the operation started with a thorough inspection of the bow thruster unit. The team then detached the bow thruster blades one by one.

Restrictions for Vessels Calling at Cotonou

Cotonou Port

Port Authorities have informed that the completion of heavy works for the enlargement of breakwaters at the port of Cotonou is scheduled for end of July. - Overview: Vessels complying with mentioned particulars berthing or sailing subjected to favorable weather conditions. Minimum 1 bow thruster in good working condition required. - Overview: Vessels complying with mentioned particulars berthing or sailing subjected to favorable weather conditions. Minimum 1 bow thruster in good working condition required. - Overview: Berthing and sailing always subjected to good weather conditions.

Underwater Reinstallation of Bow Thruster

Image courtesy Hydrex

Due to a malfunctioning bow thruster, a 334 metre container vessel had to use the services of a tug boat for port maneuvering, so its owners requested Hydrex to take care of the removal, transportation and reinstallation of the unit. The operation was performed in stages in several locations to allow the vessel to keep to its sailing schedule. Together with all the necessary equipment, the team travelled to Rotterdam where the operation started with a thorough inspection of the bow thruster unit.

Underwater Bow Thruster Reinstallation In Tacoma

Three months after Hydrex diver/technicians removed the bow thruster of a 294-meter container vessel in Tacoma, a Hydrex team once again mobilized to this location to reinstall the overhauled unit underwater with the use of the Hydrex flexible mobdock. The superintendent of the ship was very satisfied with the first part of the operation. The job was completed well within the available time frame thanks to good team work of the Hydrex divers, the ship staff and the floating crane operator.

Underwater Bow Thruster Reinstallation

Three months after Hydrex diver/technicians removed the bow thruster of a 294-meter container vessel in Tacoma, a Hydrex team once again mobilized to this location to reinstall the overhauled unit underwater with the use of the Hydrex flexible mobdock. The superintendent of the ship was very satisfied with the first part of the operation. The job was completed well within the available time frame thanks to good team work of the Hydrex divers, the ship staff and the floating crane operator.

Underwater Bow Thruster Removal

Photo: Hydrex

A Hydrex diver/technician team mobilized to Rotterdam last month to remove the bow thruster of a 300-meter container vessel. The unit needed to be overhauled. Hydrex performed the operation underwater using the company’s own workboats based at the Antwerp depot. This made it possible for the owner to keep his vessel out of drydock. The team mobilized from the Hydrex headquarters in Antwerp after all basic preparations had been made and the needed equipment was loaded onto one of the Hydrex workboats.

ZF Marine New Bow Thrusters

Image courtesy ZF Marine Group

ZF Marine Group, provider of marine propulsion technology, has added bow thrusters to its pleasure craft product range. The innovative design incorporates counter-rotating propellers in a patented tunnel design which increases efficiency while reducing noise. In addition, the bow thrusters can operate for long periods with heavy duty cycles. The new range of bow thrusters is principally intended for all types of pleasure craft, especially vessels requiring high maneuverability for extended operating periods.

WESMAR Bow Thruster on Oil Support Vessel

WESMAR (Western Marine Electronics) of Woodinville, Wa. has announced the installation of their ABS design approved bow thruster for dynamic positioning on the 175 ft FSV Gulf Fury, the newest and fastest oil support vessel for Gulf Fleet of Lafayette, Louisiana. Gulf Fury, joins a fleet of 17 other Gulf Fleet vessels. “She is our first total ABS classed DPS-1 vessel. With this classification and with WESMAR’s V2-20 ABS design approved bow thruster, the Gulf Fury is viewed highly in the industry…

Wesmar to Attend WorkBoat Show

Photo Caption: A large Wesmar commercial stainless steel counter rotating dual prop bow thruster similar to what Wesmar will be showing at the WorkBoat Show Dec 3-5. This year, at the International Workboat Show, Wesmar will be displaying their ABS design approved DP 1 Model V2-20 NS Vortex dual prop all stainless steel bow thrusters and their Model V2-24 as well as Active Gyro Stabilizers at booth number #1441 in New Orleans Dec. 3-5. Wesmar’s counter rotating propeller design was developed to provide up to 40% more thrust with the same tunnel size and same input power.

Closure of Port of Venice/Porto Marghera

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The entrance of Port of Venice/Porto Marghera will be closed from August 18th at 03.00 to August 25th at 00.01. Port traffic will be suspended from August 18th at 03.00 up to August 18th at 07.00. From August 25th at 00.01 up to the start of positioning of structure MB-B04 (expected on September 2nd), transit will be allowed through the lock chamber for vessels within the above size limit and through channel for vessels over the above size limit with 2 tugs made fast and a maximum speed of 5 knots.

St. Lawrence Seaway Draft

The Great Lakes-St. Lawrence Seaway System issued a Notice stating that, effective May 24, the maximum allowable draft in the Montreal to Lake Ontario section will be increased to 80.8 dm (26’ 06”), subject to favorable water elevations. The draft increase will be for all inland ships and for ocean ships equipped with an operational bow thruster. For ocean ships not equipped with bow thrusters, the maximum allowable draft will be 80.0 dm (26’ 03”). Seaway Notice No. 10 of 2004 (HK Law)

Rapid Underwater Bow Thruster Removal Avoids Drydocking

Photo: Hydrex

A Hydrex diver/technician team mobilized to Tacoma, Washington, U.S. last month to remove the bow thruster of a 294-meter container vessel. The unit needed to be overhauled. Hydrex performed the operation underwater in a very short time frame. This made it possible for the owner to keep his vessel out of drydock. Together with all the necessary equipment, the team mobilized from the Hydrex office in Clearwater, Florida to the vessel’s location. After they set up a monitoring station on a workboat, the divers started the operation with a detailed inspection of the bow thruster unit and tunnel.

Bulbous Bow Fabricated and Installed on M/V Monte Carlo

In March 2006 Bay Ship & Yacht Co. installed two new series 60 Detroit Diesel engines, a new bulbous bow, bow thruster, and a new reinforced rub rail on the dinner boat Monte Carlo owned by Hornblower Yachts. The initial design for modification work was drawn up by Dejong & Lebet of Jacksonville, Florida. Bay Design and Engineering provided detail design for most of the modification items, including a new engine bed design for proper shaft alignment, and CNC flat patterns for the bulbous bow. Layout, fabrication and assembly of the bulbous bow was accomplished on the drydock by Bay Ship’s experienced pattern makers and welding crew. Meanwhile, a new bow thruster was fitted and welded in place, and new gensets, shafting, boarding gates, sewage transport system and mast were installed.

Kawasaki Inaugurates Gulf Of Mexico Service

Kawasaki Heavy Industries has expanded with the addition of a new service center to its worldwide network for marine machinery. Established in the New Orleans area to support Kawasaki's marine propulsion systems, the new operation is end result of an agreement with AmClyde Engineered Products Company - to utilize AmClyde's parts and service center in Covington, La. Kawasaki supplied a set of four propulsion thrusters for Tidewater's ROV support vessel Nautical Tide. The equipment package was comprised of two azimuth thrusters for main propulsion, one tunnel bow thruster and one retractable azimuth bow thruster. The vessel was constructed at Yantai-Raffles Shipyard in China under subcontract from the company's U.S.-based partner - Friede Goldman Halter.

WESMAR Announces Bow Thruster Order

Queenscliff

WESMAR (Western Marine Electronics, Inc.) has announced an order from Hydraquip, Tasmania, Australia, for two commercial bow thruster systems for installation on a steel-hulled car/passenger ferry. The order is for  two WESMAR Model V2-28, 185 HP, counter rotating dual-prop stainless steel bow thruster systems. They will be installed on the 187-foot M/V Queenscliff, a double ended roll-on/roll-off ferry that provides hourly service between the towns of Queensland and Sorento. The Queenscliff has been operating between the two cities since 1993. She accommodates 80 vehicles and 700 passengers.

MN100: Omnithruster, Inc.

(Photo: Omnithruster)

Omnithruster’s line of waterjet bow thrusters are optimized for shallow draft operation. The Omnithruster 400HP thruster operates at a draft of less than 2 feet – something no other in-hull thruster can boast. An OmniThruster bow thruster produces thrust continually with nozzles in or out of the water; in rough seas, strong currents, while pitching, yawing, rolling, or heaving. An OmniThruster can even produce thrust while the vessel is underway at several knots, a condition in which conventional propeller tunnel thrusters are subject to cavitation and do not effectively produce thrust…

Underwater Bow Thruster Removal and Reinstallation

Four months after Hydrex diver/technicians removed the bow thruster of a 280-meter container vessel in Singapore, a Hydrex team once again mobilized to this location to reinstall the overhauled unit underwater with the use of the Hydrex flexible mobdock. The superintendent of the ship was very satisfied with the first part of the operation. He said that “...the job was completed well within the timeframe of forty hours thanks to good team work of the Hydrex divers, the ship staff…

WESMAR Thrusters ABS DP Approval

Photo courtesy WESMAR

WESMAR announced that two more of their all stainless steel bow thrusters have been given ABS Certificate of Design Assessment for dynamic positioning (DP) applications. WESMAR Models V2-24 and V2-26 Vortex dual prop all stainless steel bow thrusters have joined the V2-20NS system, which received the design approval rating earlier this year. The horsepower ratings for the V2-24 and V2-26 range from 175 to 225, for operation on vessels up to 225 hp. The coveted ABS rating clears…

Use of Tug Boat Services in Bangkok Port

Request for PAT tug boat service must be made for berthing at: East Quay Berths (No. - Vessels with LOA exceeding 250 ft. must use at least one tug boat of 1200 HP up. West Quay Berths (No. - Vessels with LOA 250 - 450 ft. - Vessels with LOA exceeding 450 ft. - Vessels with bow thruster or stern thruster must use at least one tug boat of 1200 HP up. For midstream dolphin mooring, at least two tug boats of 1200 HP up must be used. - For midstream buoy mooring, at least one tug boat of 1200 HP up must be used. For other vessels with LOA not exceeding 250 ft., if the master judges that the vessel could berth at the terminal quay or moor at midstream safely he could do so without requesting tug boat service.

A Worker to Explore the Seabed

Photo courtesy Seabed AS / Cummins Norway AS

Mariners have become accustom to seeing ever more complex and sophisticated vessels launched in support of the petroleum exploration industry. A new level was set this year when the Norwegian yard Fjellstrand AS launched the multi-purpose offshore vessel Seabed Worker for Seabed AS of Begen Norway. The DP2 classed vessel has two 2500 kW stern-mounted Voith propulsion units, a Rolls Royce 1000-kW tunnel bow thruster and a Rolls Royce 1000-kW retractable azimuthing bow thruster.

UK Reports on Oban Allision

The UK Marine Accident Investigation Branch (MAIB) issued its report on the investigation of the allision between the ro-ro ferry ISLE OF MULL and a moored vessel and a pier in Oban Bay. The ferry was approaching its berth. When the master moved from the center control console to the starboard wing control console, he forgot to start the bow thruster. As the officer of the watch started the bow thruster and transferred control to the starboard wing control console, the master’s control over the port engine was lost momentarily. By the time full control was regained, there was insufficient sea room to slow or maneuver the ferry. The primary cause of the allision was determined to be poor bridge team management practices. Report No. 13/2005 (HK Law)

Maritime Reporter Magazine Cover Dec 2017 - The Great Ships of 2017

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