Borgøy: the World’s first LNG-Fueled Tug

Marine News
Friday, February 28, 2014

Late last year, an innovative project to design and build the world’s first LNG fuelled escort tugs became a reality when the Borgøy was handed over for sea trials by builder Sanmar in Tulza Bay near Istanbul.
For the Christening at the Sanmar Shipyard in Tuzla, representatives from the Turkish shipyard were joined by executives from Norwegian tug operator Buksér og Berging AS and from Rolls-Royce. Neil Gilliver, Rolls-Royce, President – Merchant, believes that delivery of the Borgøy and Bokn, each with 65-tonne bollard pull and a transit speed of 13.5 knots, will mark a step change in tug propulsion.
Gilliver added, “The completion of this vessel is highly significant for Rolls-Royce, Sanmar Shipyard and Buksér og Berging. We are extremely proud to have worked together on this successful project which heralds a new era for tug boat propulsion. Gas is gaining in popularity as a maritime fuel, and its environmental credentials, combined with lower costs are seeing many operators select it over traditional fuels, across a range of ship types.”
The project makes sense on many levels. Most of the world’s tug fleets operate close to shore, where emissions regulations are most stringent and as LNG becomes more widely available, it is expected that more major ports will also opt for the clean, lower cost and smoke-free fuel to power their tugs.
Following sea trials, the vessel sailed in mid-January for Kårstø Terminal in northern Norway where gas from some thirty offshore fields is landed and processed. There the ground-breaking craft will commence long-term charters with Norwegian state energy firm Statoil ASA and Gassco, the operator of the gas transportation network in early in 2014.
As Europe’s largest export facility of natural gas liquids and third largest in the world, the Kårstø Terminal will depend on these escort tugs, together with others, for the safe handling and manoeuvring of LNG tankers, LPG carriers and chemical tankers 24/7 and 365 days a year. The Borgøy and Bokn, each with fire-fighting and oil recovery capability as well as escort notation, are now the world’s most environmentally friendly tugs.

Propulsion
Both vessels are powered by a pair of Rolls-Royce Bergen C26:33L6PG lean-burn gas engines that have a combined output of 3,410 kW at 1,000 rpm and are directly coupled to Rolls-Royce US35 azimuth thrusters, each fitted with a 3m dia CP propeller in a nozzle. The propulsion package also includes a vertically-mounted gas tank to save space. The single cryogenic fuel tank has a capacity of 80m³, containing enough fuel to last up to five or six days and can be bunkered in around 45 mins. The rest of the fuel system is split and duplicated into two separate gas supply lines and power trains. Each is monitored by the sophisticated Rolls-Royce Acon safety, alarm and control system with gas detection in all areas. The two parallel propulsion trains provide full redundancy. Unlike conventional diesels which require fuel pumps, filters and injectors, gas is fed to the engines by pressure in the LNG storage tank. This will mean significantly less maintenance for the fuel supply system over time.

The Environment
The benefits of LNG as a marine fuel, particularly for inshore harbour craft which often operate in pre-defined areas where access to bunkering facilities does not present the same challenge as for deep-sea operators. And, a 25 percent and 80-90 per cent reduction in CO2 and NOx emissions respectively, and the virtual elimination of SOx emissions and particulates – means that Rolls-Royce gas fuelled Bergen engines meet IMO Tier II and Tier III regulations as well as US Environmental Protection Agency rules on NOx. The tugs are expected to have improved fuel consumption, lower maintenance costs, reduced lube oil consumption and a much-improved working environment for ships’ crews.



(As published in the February 2014 edition of Marine News - www.marinelink.com)

 


Shipbuilding

Matson Orders Two ConRo Ships from NASSCO

Matson Navigation Company, Inc., a subsidiary of container shipper Matson, Inc., has signed a contract with U.S. shipbuilder General Dynamics NASSCO to build two

MN100: Conrad Shipyard

The Company: Conrad Shipyard was established in 1948 and is headquartered in Morgan City, Louisiana. The company designs, builds and overhauls tugboats, ferries,

Heavy Lifting: Giant Pipe Racks Shipped for New FPSO

From Brazil to China and then back to Brazil, five pipe racks and three modules weighing a total of 1,871.51 metric tons and measuring 24,075 m³ will be transported

Workboats

Tuco’s New Arctic Workboat to Debut at SMM

Danish producer Tuco Marine said it will reveal a new Arctic workboat daughter craft at next month’s SMM in Hamburg.   Many arctic patrol vessels, icebrakers

COSCO Delivers PSV and Two Jack-up Rigs

Cosco (Dalian) Shipyard Co., Ltd., a subsidiary of its 51 percent owned Cosco Shipyard Group Co., Ltd., has delivered two jackups to the Foresight Group of companies

MN100: All American Marine, Inc.

The Company: All American Marine Inc. was founded in 1987 and specializes in the construction of custom tailored aluminum boats from 30 to 150 feet LOA. Today,

Marine Power

MN100: R.W. Fernstrum & Company

The Company: R.W. Fernstrum & Company set the standard in marine heat exchangers over 65 years ago, building a reputation focused on innovation. Today, its commitment is to continual improvement,

US Navy Ships Conduct Astern Replenishment-at-sea

“While replenishments-at-sea are routine, astern refueling is unique and requires precise navigation and coordination,” said Lt. Cmdr. Jason Ileto, fleet replenishment scheduler for Commander,

Better Turbocharger Performance, Proven Tech

Engineer wisdom: Nothing is worse as the right idea at the wrong time. But with the new ECOCHARGE Two-Stage Turbocharging System MAN D&T has reached both goals.

LNG

Viking Grace Marks 1,000 LNG Bunkering Milestone

From the very beginning, the M/S Viking Grace – delivered in January 2013 – was an environmental milestone.   The vessel attracted global attention as an environmental

Hoegh LNG Profits Dip

Norway-based owner and operator of floating LNG import terminals, Höegh LNG  reported a second quarter profit after tax of US$3.5 million, down from $6.3 million in the first quarter 2016.

SMM 2016: World Premieres from around the Globe

Some 50,000 trade visitors from the whole of the world are expected in Hamburg for the start of SMM in less than two weeks. And once again, it is fully booked – with a total of more than 2,

News

NOAA Engineers a Better Current Sensor for Mariners

Navigating into seaports is now safer and more efficient for mariners thanks to improved NOAA technology that ships rely on to give them information about currents.

Matson Orders Two ConRo Ships from NASSCO

Matson Navigation Company, Inc., a subsidiary of container shipper Matson, Inc., has signed a contract with U.S. shipbuilder General Dynamics NASSCO to build two

Iran Vessels Make 'High Speed Intercept' of US Ship

Four of Iran's Islamic Revolutionary Guard Corps (IRGC) vessels "harassed" a U.S. warship on Tuesday near the Strait of Hormuz, a U.S. defense official said, amid

Marine Equipment

MN100: R.W. Fernstrum & Company

The Company: R.W. Fernstrum & Company set the standard in marine heat exchangers over 65 years ago, building a reputation focused on innovation. Today, its commitment is to continual improvement,

Heavy Lifting: Giant Pipe Racks Shipped for New FPSO

From Brazil to China and then back to Brazil, five pipe racks and three modules weighing a total of 1,871.51 metric tons and measuring 24,075 m³ will be transported

Alfa Laval Launches DuroShell LPG/E Cargo Condenser

With the new Alfa Laval DuroShell plate-and-shell heat exchanger, Alfa Laval aims to strengthen its offering in LPG/E cargo reliquefaction with a construction that

Vessels

Matson Orders Two ConRo Ships from NASSCO

Matson Navigation Company, Inc., a subsidiary of container shipper Matson, Inc., has signed a contract with U.S. shipbuilder General Dynamics NASSCO to build two

Former HMS Illustrious Sold for Scrap

The former aircraft carrier HMS Illustrious will be recycled after 32 years of service, announced the U.K. Ministry of Defense (MOD) who sold the ship to Turkish

Tuco’s New Arctic Workboat to Debut at SMM

Danish producer Tuco Marine said it will reveal a new Arctic workboat daughter craft at next month’s SMM in Hamburg.   Many arctic patrol vessels, icebrakers

 
 
Maritime Security Naval Architecture Offshore Oil Pod Propulsion Port Authority Salvage Ship Electronics Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1726 sec (6 req/sec)