Design of an icebreaker Offshore Service Vessel (OSV) of 80-m in length might seems a fair step up from a 30-m harbour tugboat, but all in a day’s work for Robert Allan’s Vancouver-based versatile naval architects, who have just been awarded a contract for two new designs for such vessels to be built in Turkey for operation in the shallow, seasonally ice-bound waters of the Caspian Sea.
TundRA 8000 OSV Preliminary Design: Image courtesy of Robert Allan
Robert Allan Ltd. is an independent, privately owned firm of Consulting Naval Architects founded in 1930 when Robert Allan commenced private practice as a Consulting Naval Architect. Year on year, just like Topsy the business grew and grew until in 2008 the company was restructured to a culture of employee ownership with eleven of Robert Allan Ltd.'s core group of senior employees becoming shareholders in the firm. But a present generation Allan – Robert G. – grandson of the founder, remains Executive Chairman and... [More]
A new high-speed marine diesel engine was introduced a few days ago by Caterpillar Marine Power Systems. The model C175-16, generally thought to be an improved version of the engine launched last year, is claimed by the manufacturers to be the cleanest-burning engine of its size in the world.High-speed four-stroke trunk piston engines are widely specified for propelling small, generally specialised, commercial vessels, such as offshore vessels, tugs and workboat applications, which is exactly the market Caterpillar has in mind for the new engine, although this unit might well serve as a main and emergency genset on any size of ship.
High-speed Marine Diesel Engine CATERPILLAR C175-16: Photo credit Caterpillar Marine Power Systems
The 84.67 ltr displacement C175-16 engine, latest in a line of high performance engines designed to meet EPA Tier 3 and IMO Tier II emissions requirements, is rated at 2001/2168 bkW at 1600 rpm. With a bore of 175 mm (6.9 in) and a stroke o... [More]
Earlier this month the second of three Sigma Class frigates, the Sultan Moulay Ismail (#614), was handed over to the Royal Moroccan Navy by the builders, Damen Schelde Naval Shipbuilding (DSNS), Netherlands. The first frigate, the Tarik Ben Ziyad (#613) was commissioned in September 2011, the third ship (#615) is due for delivery later this year. The second and third ships have an LOA of 98 mand displacement of 2,075 t. Propulsion is by twin Pielstick 20PA6B STC diesel engines each rated at 8,910 kW at 1,094 rpm. Maximum speed is 28 kn, at the economy speed is 14 kn giving a range of 4,800 nm. Sigma offers a flexible series of variants described as corvettes or frigates. The program has attracted several export orders. [More]
Tags: Damen Schelde Naval Shipbuilding, Sigma Class, Sultan Moulay Ismail, Tarik Ben Ziyad, Pielstick, 20PA6B STC, Renk ASL94, Rolls-Royce, Kamewa, Caterpillar, 3406C TA, 3304B
Italian shipyard Cantieri Navali Megaride is constructing an offshore supply vessel (OSV) Guardia Costiera. The vessel has a LOA of 65 m and beam of 12 m, and is designed by Errenavi, Rome to RINA classification society rules and features a CODLOD hybrid propulsion system provided by Siemens Siship EcoProp. A two shaft propulsion arrangement uses Caterpillar 3512C main diesel engines each driving a ZF 9300 PTI transmission with Siemens180 kW electric motors Electrical power is supplied by four Caterpillar C18 gensets each of 275 kW output. [More]
Tags: Cantieri Navali Megaride, Guardia Costiera, hybrid, Errenavi, RINA, CODLOD, Siemens, Siship EcoProp, Caterpillar, 3512C, C18, ZF, 9300, PTI
Austal is to supply the Australian Customs and Border Protection Service with a fleet of eight Cape Class Patrol Boats. The US $ 375 million contract includes through life support for eight years. Construction of the first hull is due to commence this month with completion planned for March 2013. Delivery date for the completion of the contract for all eight vessels is in the third quarter of 2015. The new vessels have an LOA of 190 ft (58 m) and are powered twin Caterpillar 3516C diesel engines, driving fixed pitch propellers. Maximum speed is 25 kn and range is 4,000+ nautical miles at 12 kn. [More]
Caterpillar Marine Power Systems recently announce the development of a new MaK M46DF series as a dual fuel engine suitable for electric or mechanical propulsion. The 46DF series is offered with a power output of 900 kW per cylinder at both 500 and 514 rpm engine speeds. When operating on LNG, it complies with IMO III as well as EPA Tier 4 regulations.
The new M46DF series has the same main dimensions and interfaces as the 43C series, simplifying the substitution of the 46DF engine in 43C applications and there is the possibility to retrofit existing 43C engines to dual fuel operation. Availability of the DF series is 2014. [More]
The C175 series was first announced in 2006, initially for other applications in three different cylinder configurations: as a 64 ltr V12, an 85 ltr V16 and a 106 ltr V20. Starting with the V16 cylinder version, the series commenced manufactured in 2007 at Caterpillar's Lafayette, Indiana, Large Engine Center (LEC). Introduced last week as an addition to the Caterpillar’s range of diesel propulsion engines, the C175-16, has a bore of 175 mm (6.89 in) and stroke of 220 mm (8.66 in) giving a cylinder volume of 5.3 ltr. It meets EPA Marine Tier 3 and IMO Tier II emission requirements with outputs of 2,683 hp to 2,907 hp (2,011 kW to 2,168 kW) at 1,600 rpm and 3,003 hp to 3,420 hp (2,239 kW to 2,550 kW) at 1,800 rpm. [More]
Hovertrans Solutions Pte. Ltd, Singapore, recently announced it will be constructing a 50 tonne payload hoverbarge which is expected to be available for charter from third quarter 2011. Measuring 34m x 17m, lift is provided by two MAN 2842 LE201 diesels of 620 kW (900 hp) and can be self propelled by adding two Caterpillar powered ducted fans (air propellers) in modular propulsion units. The hoverbarge was first developed in the UK in the 1970's by Air Cushion Equipment Ltd., to provide a solution to the problem of heavy lift in difficult terrain in the global oil and gas, and specialist transportation industries. A very low ground pressure of around 0.07 bar (1 psi).makes it ideal for crossing difficult terrain such as swamps, shallow water, soft mud, sandbars, wet sand etc. When off-hover, it reverts to its ship like characteristics and floats like a normal marine barge. [More]