The new Wärtsilä 46DF engine has been specifically developed for the high-output market and is fuel flexible as well as power flexible with 1045 kW or 1145 kW cylinder power options.Compactness and reduced weight are the key attractions of the medium-speed engine, giving ship designers the option of increasing a new vessel’s revenue-earning capacity to get the most efficient propeller speed through mechanical (reduction gearing), or through diesel-electric transmissions. With the cruise ship, ferry, LNG carrier and offshore vessel markets for this type of engine in mind, the 46F engine design is based on the well proven Wärtsilä 46F engine, popular since the early 2000s, but with the advantage of being able to use natural gas, heavy fuel oil (HFO), or marine diesel oil (MDO) bunker fuel.
Engine detailsThe Wärtsilä 46DF extends Wärtsilä’s dual-fuel engine family by covering the power range from 6.2 MW to 18.3 MW at 6... [More]
Ships with Wärtsilä’s Airguard and Oceanguard propellor shaft seals have no need to change from mineral oil to a bio-degradable lubricant (formally ‘an Environmentally Acceptable Lubricant’) when they're in U.S. waters as these seals meet Vessel General Permit (VGP) requirements. How these particular propeller shaft seals comply, and more about these newish VGP amended regulations follows:Seals,bearings and stern tube arrangement: Image courtesy of WärtsiläNo oil-to-sea interfaceWärtsilä explain that Airguard is suited for merchant ship stern tube and thrusters, and Oceanguard for cruise, ferry and offshore stern tube, thruster and electric pod face type sealing. The Airguard and Oceanguard sealing systems have been designed with no oil-to-sea interface (the essential point): an air chamber or separation space within the seal captures any water or oil leakage, which is then transferred to inboard tanks for monitoring and further tre... [More]
Tags: Wärtsilä, propeller shaft seals, lubirication, Oceanguard, Airguard, merchant ships, ferries, cruise liners, offhore vessels, US Vessel general permit, vgp
The remarkable significance of a new marine diesel technology just announced by Wärtsilä is that the low pressure, dual-fuel (gas/liquid fuel) benefits that are already available to 4-stroke engines, can now be applied to 2-stroke engines as well, thus making the technology available to the broader merchant shipping market.
The test engine: Photo courtesy of Wärtsilä
Wärtsilä, having announced the successful full scale testing on gas of an RT-flex50DF engine, say that the marine industry is already showing significant interest, evidenced by the fact that more than 130 industry executives from 89 leading shipping companies attended the recent introductory event in Trieste, Italy. In his opening speech at the event, Jaakko Eskola, Senior Executive Vice President and President, Wärtsilä Ship Power, stated: “Dual-fuel engine technology is the future; it is a tide that cannot be turned back. Gas is certain to play an increasingly imp... [More]
At slow steaming cold corrosion can occur – Castrol sees concerns by specifications given from the engine manufacturers confirmed.
Many shipping owners go for slow steaming. But to avoid long term damages by slow steaming particular adjustments must be done. One aspect is the use of optimized lubricating oils. A possible problem is cold corrosion. The lubricating oil manufacturer, e.g., Castrol Marine assumes that, during slow steaming, cold corrosion can happen if lube oils with lower base numbers (BN) come together with fuels with higher sulphur content. “We always point out that oils with lower BN are unsuitable for slow steaming with modern diesel engines. Both market leading OEM’s have now created specific guide lines, which go along with our experiences”, says Castrol manager Paul Harrold. They recommend their customers to coordinate the use of lube oils with engine type and working conditions. Last May Castrol presented some case studies. These figures un... [More]
Wärtsilä has received its first two orders, a total of seven engines, for their X62 2-stroke low speed engine. The X62 is a midsize engine tailor made for Panamax Bulk Carriers, Aframax or Long Range 2 (LR2) Tankers and Container feeders. It is part of the new engine generation X 2-stroke engine family which was recently introduced to the market. According to the contracts, the main engines will be supplied to power:
- Four new LR2 tankers being built for Kyklades Maritime Corporation, a Greek ship owner, at Hyundai Heavy Industries Co., Ltd (HHI) in South Korea.
- Three bulk carriers for Suisse-Atlantique, the Switzerland based global fleet operator, to be built at Hyundai Mipo Dockyard's (HMD) facilities in Vietnam.
The vessels will be of the new Ecodesign developed by the yards to reduce fuel consumption and emissions substantially compared to previous tonnage. Both orders were signed during the second quarter of 2013 and the engines will be manufactured... [More]
Wärtsilä has been awarded an important retrofitting contract by the German shipyard, BVT-Brenn-und Verformungstechnik Bremen GmbH to convert the Ostfriesland, a car and passenger ferry (owned by Aktien-Gesellschaft ‘EMS’) to run on liquefied natural gas (LNG) fuel.
Ferry MV Ostfriesland: Photo courtesy of Wärtsilä
The ferry’s route is between Emden and Borkum Island on the Lower Saxon Wadden Sea National Park, an ecologically sensitive UNESCO World Heritage listed area in the southeastern part of the North Sea, and the retrofit will significantly reduce the ship’s environmental impact.The Ostfriesland’s diesel-electric configuration will be powered by two 6-cylinder Wärtsilä 20DF dual-fuel generating sets utilising a Wärtsilä proprietary LNGPac, which is a complete system that comprises onboard liquid natural gas bunkering, storage tanks, and handling equipment with related safety and automation systems. The scope of... [More]
A Wärtsilä X40 low speed engine recently passed its Type Approval Test (TAT) in Zhouhai, China, on licensee Yuchai Marine Power’s test bed, verifying that it met all classification society requirements. Sea trials come next and then the new engine will be introduced to the market.
X40 Marine Diesel TAT Ceremony: Photo courtesy of Wärtsilä
This engine, with its 400 mm cylinder bore, a power output in the range of 4,550 to 9,080 kW and available in 5–8 cylinder configurations, covers the small-bore end of the market. Wärtsilä say that it is ideal for ‘Handysize’ vessels (smaller bulk carriers, product tankers and container feeder vessels) which is a segment where they are making their presence increasingly felt after a number of years absence.
The Wärtsilä X40 building on the X35 engines, features Wärtsilä’s second-generation version of its well proven electronically controlled common rail system with time co... [More]
STX Shipyard, Finland's Turku, delivered recently a multipurpose deck cargo vessel to the Gaiamare Ltd. subsidiary of the Meriaura Group. Godmother of the vessel, Minister of Transport Merja Kyllönen, gave the 105. 4 m x 18.m ship the name Meri.
MS Meri, a modern and environmentally friendly deck cargo vessel, is designed for global operation and a wide variety of tasks. When delivered, she will be able to operate as a transport vessel for demanding project cargo such as offshore wind farm structures and for energy wood transport in the Baltic Sea area. The ship which has ice class 1A is the first dry cargo vessel in the Baltic Sea built according to the Aker Arctic DASTM design which enables the vessel to operate efficiently astern in ice. The main engines of Wärtsilä’s latest development can use three kinds of fuel: it can operate with LNG and also with the environmentally friendly biodiesel fuel and low sulfur marine diesel fuel. Two Schottel-rudder-propel... [More]
Dockwise Vanguard is a semi-submersible heavy transport vessel (SSHTV) built by Hyundai Heavy Industries (HHI) in Ulsan for the Dutch shipping company Dockwise. DOCKWISE VANGUARD is the largest heavy lift vessel in the world.
The vessel has left the yard of Hyundai Heavy Industries ("HHI") on 1. of February 2013 and started its maiden trip. DOCKWISE VANGUARD will sail to the Samsung Heavy Industries ("SHI") yard in Korea to pick up the giant hull of the Jack / St Malo semi-submersible floating production facility for transportation to the US Gulf of Mexico. DOCKWISE VANGUARD was also contracted to transport the GOLIAT FPSO to northern Norway and the AASTA HANSTEEN spar platform to the Norwegian Sea.
DOCKWISE VANGUARD leaves HHI-Shipyard for its maiden voyage
First steel was cut for the giant in September 2011. The keel laying ceremony took place in December 2011. Large pieces of steel were manufactured at the factory and shaped, before being transported to different construction yards... [More]
The new Petrobras-63 Floating Production Storage and Offloading (FPSO) vessel, NISA, featuring Wärtsilä 50DF dual-fuel engines, the first such ship to utilize gas engines to produce more than 100 MWe of power, has successfully completed all the required full 100% load tests. The tests were carried out at the Cosco shipyard in Dalian, China and the vessel will commence operations in Brazil’s offshore oil fields in 2013. The vessel is 342 metres in length, with a moulded breadth of 57.36 metres and a moulded depth of 28.5 metres. It was converted from a 320 000-dwt ULCC, built in 1983. NISA has a daily production capacity of 140,000 barrels of oil (bopd) and 35 million cubic metres of gas. The storage capacity by design is 1.4 million barrels and the operating depth is 1,200 metres. Classified by ABS, NISA is equipped with a spread mooring system and is designed to work for 25 years successively without docking work.
With this validation of NISA&r... [More]