Delivery and order round-up
Developments with tugs of the future features prominently in this month’s Tugs & Towing, an LNG-fuelled pushboat included here in our delivery and order round-up.
Starting with deliveries, Sanmar’s Bogacay class of tug is its “best seller” but delivery of Galluzzo to Rimorchiatori Napolitani in Naples is notable being first of a newly configured version with interesting modifications meeting the customer’s specific requirements.
It is more powerful than the standard Bogacay class achieving 75tbp through upgraded Caterpillar 3516C main engines each developing 2,350kW and driving Rolls-Royce (now Kongsberg) US 255-FP Z-drives with slipping clutches.
Other modifications include salvage notation with a rescue boat and Heila crane along with full fifi1 specification including a dedicated engine driving the fire pump allowing maximum vessel manoeuvrability when firefighting. A foldable mast allows unhindered operation close to a ship’s flared bow and an upgraded larger crew accommodation is also provided.
In another significant bulk delivery for Damen, its Albwardy Damen facility in Sharjah UAE was chosen to mark delivery of 13 tugs to serve the partnership between Jawar Al Khaleej Shipping and General Company for Ports of Iraq.
The order was signed in March 2019 with all the vessels delivered within a seven-month period, reflecting Damen’s standardised shipbuilding approach, the 13 tugs earmarked for operation at various offshore terminals in Iraq.
The vessels were built at different Damen shipyards including: Vietnam, Galati, Cape Town, Sharjah and Kozle, the batch comprising: four ASD Tugs 2813 (Jawar Diyala, Karbala, Dhiqar and Maysan), two ASD Tugs 3212 (Jawar Anbar and Muthanna), three RSD Tugs 2513 (Jawar Baghdad, Kirkuk and Ninawa), three Stan Tugs 2208 (Jawar Najaf, Salah Aldin and Wasit) and a Shoalbuster 2609 (Jawar Babil). The ASD tugs have fifi1 and escort notation and the contract includes spare parts packages, training and computerised planned maintenance system with remote monitoring on board the vessels.
Seven of the 13 were present for the handover ceremony in Sharjah with three already in service and the remaining three on delivery voyage to the client at the time of writing.
Damen is also the first item in our look at recent orders with the signing of a contract with Karachi Shipyard & Engineering Works for a materials package for the third ASD Tug 2009 under the Damen Technical Cooperation agreement. The first two examples are to be operated by the Pakistan Navy.
Natural gas as a fuel is one option for tug operators and port authorities seeking to reduce environmentally hazardous gas emissions, an option also offering reduced costs compared to other fuel alternatives.
Availability is of course crucial to the development of LNG as a fuel and while a lack of such sources has hindered growth in some parts of the world, Robert Allan Ltd’s (RAL) clients are actively involved in developing the required infrastructure. Recognising the opportunities, RAL and MTU Friedrichshafen GmbH have now developed the first LNG-fuelled shallow-draught pushboat design designated the RApide 2800-G.
The preliminary design utilises the proven shallow-draught RApide 2800-Z2 model currently operating on the Amazon River system. The vessel will have two 746kW MTU 8V4000M55R-N Tier III gas safe main engines, MTU also acting as system integrator providing the LNG package including tank system, integrated ship monitoring and LNG control and safety systems.
Provision of LNG tanks is an obstacle that can present challenges and while retaining the existing hull shape, the design was reconfigured for this aspect. Lower crew cabins and galley have been moved up a deck and the deckhouse enlarged, all having to comply with rules for gas system hazardous zones for a compact 28m tug. Redundancy is provided by two independent tank connection spaces attached to LNG tanks, one for each engine.
Staying with RAL and Sanmar, the Canadian naval architect has completed the design for two new TRAktor 3000-Z escort tugs for Norwegian tug owner Bukser og Berging, to be built at Sanmar.
They will be the 6th and 7th tugs from Sanmar for Bukser og Berging, the 30m long vessels powered by two IMO Tier III compliant 2,200kW main engines driving CP propellers providing a bollard pull of around 75t and steering force of 80t. Accommodation will be provided for up to seven persons with the first example due for delivery late in 2020.
By Peter Barker
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