Page 52: of Maritime Reporter Magazine (August 2016)

SHIPBUILDING

Va.; and Bremerton, Wash. lar 3516C high speed diesels, each de- Martha’s Vineyard and Nantucket. The gos, Nigeria. The vessels are slated to

Canadian naval architects Robert Al- veloping 2525kW at 1,800rpm. Instead Elliott Bay Design Group (EBDG) de- provide surveillance, intervention and lan Ltd. is a ubiquitous name in vessel of the traditional Voith Turbo coupling, signed ferry is the naval architects’ sec- protection to offshore assets of the Ni- design, and a unique boat has recently the engines are connected to the Voith ond design for The Steamship Authority. gerian AGIP Exploration (NAE) located been built at Tuzla, Turkey-based San- propulsion through a pair of Reintjes M/V Woods Hole is a 235-ft. single- in the Gulf of Guinea, and are also suited mar. More so, the boat symbolizes the model WAF 843 clutch and reduction ended ferry with a bow thruster and a to provide replenishment of crews, fuel, increasing importance of closer linking gearboxes. This reduces transmission service speed of 14.5 knots. The ves- and potable water to the NAE offshore custom design to production, as the Vec- losses, increasing overall propulsion ef- sel is designed to be primarily a “super facilities.

tRA 3000 design was developed exclu- ? ciency, and enabling the drives to be freight boat” that, when not carrying a Propulsive power for the vessels is sively for Sanmar, and it contains many de-clutched at idle, signi? cantly reduc- full freight load, also serves as a passen- supplied by three Caterpillar C32 AC- innovative ideas from both the builder ing fuel burn. Using high-speed engines ger and car ferry carrying up to 384 pas- ERT engines, each producing 1,450 hp and designer aimed at developing a cost- also signi? cantly reduces the space oc- sengers and 55 cars. The boat is capable at 2,300 rpm, driving Teinbridge ? xed effective VSP tug for the world market. cupied by drive machinery and of course of carrying 1 million pounds of tractor pitch propellers through ZF 3050 gear-

Sanmar’s ? rst VSP (Voith Schneider results in much lower weight, allowing trailer freight within hard constraints of boxes. The vessels have a service speed

Propeller) tug, of the new VectRA 3000 a ? ner more ef? cient hull form for the maximum draft, length and beam. of 25 knots. Electrical power is provided series, named Arie A has been built for same deadweight. Operating environment requirements by two Caterpillar C4.4 generators and

Italian operator Tripmare Spa of Trieste. In addition, Arie A has Crew Habitabil- drove many of the design features. Shal- maneuverability is enhanced by a Hydro

The vessel has been delivered by a Red- ity on Workboats ( HAB(WB) ) notation low water turbulence and bottom scour- Armor Type 800 bow thruster.

wise crew to Ashdod Port, located some from ABS, all noise, sound, vibration ing is a factor for several of the ports, Nakilat - Keppel Offshore & Marine 40 km south of Tel Aviv where it will and lighting are appropriate for classi- so this vessel incorporates controllable Ltd. (N-KOM) in Qatar has invested in operate. ? cation requirements, such as less than pitch propellers to minimize propeller the upgraded of its facilities in 2015 with

Sanmar’s brief to RAL was to create 60 db(A) sound level and 5 mm/s vibra- wake wash when accelerating. High lift a brand new VLCC-size ? oating dock a VSP tug which was under 500 GRT tion level in all cabins at 12 knot cruise rudders and a directionally vectorable with a capacity of 120,000 tons and mea- and which would incorporate high-speed speed, with using special high-tech insu- bow thruster enable tight maneuvering, suring 405 m x 66 m, which is a strong engines, a clutch between thruster and lation materials on deck and bulkheads and the vessel can turn in its own length. addition to the existing two VLCC-size engine, electronic controls and be fully and special resilient mounts and elastic Noise mitigation was also given high graving docks. With the ? oating dock

MLC 2006 compliant for all crew ac- couplings for propulsor and paneling in- priority, and it is noticeably quieter both coming into one year in operation, N- commodation. The challenges therefore stallation. on board and on shore. KOM is now capable to carry out three focused on the machinery design and the Morgan City, La.-based Conrad In- Veecraft Marine in Cape Town, South dockings simultaneously in the shipyard, overall layout. dustries is another U.S. yard with an Africa recently built and delivered a pair offering greater ? exibility in scheduling

In particular, the 30.25m tug boasts a innovative spirit, pioneering initiatives of 35-m offshore security patrol vessels dockings.

unique propulsion arrangement. Driving in the LNG sector, for one. Most re- – M/V Hezekiah and M/V Lady Dora In February 2016, N-KOM delivered the forward located Voith type 32-R5 250 cently however it delievered the ferry – two 35-meter offshore security patrol its ? rst liftboat unit Al Sa? iya, to Qatari cycloid propellers are a pair of Caterpil- M/V Woods Hole to serve Woods Hole, vessels, for an undisclosed client in La- rig operator Gulf Drilling International (GDI). Al Sa? iya is the ? rst liftboat to be wholly constructed in Qatar at the

NASSCO: The Garden State on Sea Trials

Erhama Bin Jaber Al Jalahma shipyard.

The self-propelled and elevating unit has been customized for operations in the

Middle East and North Africa (MENA) region in water depths of up to 65m.

The liftboat is equipped with four tubu- lar legs, a unique 200 ton leg encircling crane and a 50 ton pedestal crane, a large open deck space of around 800 sq. m., a helideck, and accommodation capac- ity for 130 persons. It can undertake a wide range of services such as well servicing, commissioning, maintenance and decommissioning of offshore plat- forms. The liftboat is also equipped with a specially designed gangway bridge to be used for emergency and other safety purposes.

N-KOM was recently awarded the repairs of two chemical tankers from

Odfjell Management. Both Odfjell chemical tankers, Bow Flora and Bow

Lind, underwent drydocking repairs such as propeller blade renewal, steel re- newal in the cargo and ballast tanks, hy- droblasting of water ballast tanks, rud- der bulb installation, modi? cation of the vessel’s 9 ton chain locker. Additional jobs were carried out on Bow Lind that includes Grit blasting and application of (Photo: General Dynamics NASSCO) 52 Maritime Reporter & Engineering News • AUGUST 2016

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