Feature 2 | RO-RO TECHNOLOGY WWL drives orderbook onwards
Four ro-ro carriers to be delivered by Mitsubishi Heavy Industries’ Nagasaki yard to Wilh. Wilhelmsen ASA (WW) and Wallenius Lines (OW) in 2011 and 2012 are claimed to be the largest ships of their type.
F
our new ro- ro car r iers commissioned for WW and OW joint venture Wallenius
Wilhelmsen Logistics will have a cargo volume of 138,000m3
, almost 10% greater
than the most recent such carriers used by the owners. The ships have been designed for
efficient transportation and the handling of high and heavy cargo (H&H), non- containerised cargo (NCC), and cars. Several major, innovative design-
criteria mark the vessels out as unique in their class including high ramp capacity, deck strength and height, low fuel-consumption, good transportation economy, and safe cargo handling, according to WWL. A special focus has been put on
environmental considerations, with particular attention paid to hull-line development in order to reduce fuel- oil consumption and exhaust-gas emissions. The ships will also benefit from a
new generation Kawasaki MAN B&W 7L70ME-C8 main engine from MAN Diesel’s electronically-controlled diesel range. The engine is designed to reduce
operating costs and emissions, and delivers 22,890kW at 108rev/min with an MEP of 20bar. Exhaust-gas energy will also be
recovered to generate all electrical power requirements at sea. Additionally, a 1100kW frequency-converted PTO has been chosen as power supplement for parallel operation with the turbo generator (max output 1200kW). This is for use in situations where the sea- load demands more power than can be met by the turbo generator alone. This enables optimal usage of the main engine’s power capacity and increases its overall efficiency, while simultaneously reducing CO2 emissions.
, NOx, SOx, and FOC 38 New four-deck ro-ro ship design for Seatruck Ferries. The ships are due delivery between November 2011 and June 2012. Their
design draught has been limited to 5.2m, in order to offer operational flexibility. This design provides for the four decks to be connected by fixed ramps, with a
single stern door. The newbuildings will be powered by two 8000kW main engines. They will have two 1000kW bow thrusters and high lift rudders will enhance manoeuvrability in confined areas. The order doubles Seatruck’s newbuilding programme to eight ships. During
2008, Clipper subsidiary Seatruck will take delivery of the first four 120 unit vessels, all from the Spanish builder Astilleros de Huelva. The first,Clipper Point, joined the fleet in March.
The Naval Architect April 2008 The orderbook for the group of
companies now comprises some 45 vessels to be delivered through 2012, after the two owners said in March that they had also agreed to build eight new Large Car and Truck Carriers (LCTCs), with Hyundai Heavy Industries and Daewoo Shipbuilding & Marine Engineering to construct four apiece. The vessels will be 228m long and
have a car carrying capacity of 8000 units. NA
Wilh. Wilhelmsen and Wallenius Lines have taken their on-order requirement to 45 ships, after contracting eight new LCTCs in March. They will all resemble Faust.
Four-deck specials for Seatruck
Irish Sea freight-only specialist Seatruck Ferries has placed an order for four new generation ro-ro vessels with German shipbuilder FSG (Flensburger Schiffbau Gesellschaft). The vessels have what is said to be a groundbreaking four-deck configuration.
The design provides 151 (13.6m) trailer spaces in a length of just 142m, with breadth given as 25m. The new ships will also be fast for their size, with a service speed of 21knots.
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