Marine Log
OCTOBER 4, 2012 — Helsinki, Finland, headquartered Eniram Limited has completed an analysis on the effects of hull fouling on cruise vessels in different sea areas.
Eniram, which provides realtime decision support solutions for the shipping industry, undertook a study on 60 cruise ships (90-120,000 GRT) sailing through a variety of sea areas. It says its study is one of the most comprehensive of its kind due to the volume of data collected and high frequency of observations, up to 25 per second.
The sea areas included in the study are the Caribbean, coastal seas round California and Alaska as well as the Mediterranean and the Baltic.
The study also takes into account the impact of washing and drydocking on fouling by using data from over 38,000 operative sea days complemented with temperatures and salinity databases.
The results reveal the high levels of fouling faced by the industry and in particular indicates the considerable differences in fouling build-up between cruising areas, with the Caribbean causing on average the most fouling and the Alaskan area the least.
Eniram created benchmarks for fouling to help ship owners and operators estimate the impact of operating in different areas. This shows that the financial implications of operating in areas with a heavy development of fouling could increase costs close to $500,000 per year on a single cruise vessel.
Data collected to understand the effects of dry and in-water cleaning indicated that even though as a combined figure, the first and the second wash decreased the added power consumption by 2% depending on the coating, fouling continued to increase quite rapidly after the washes, and brushing removed some parts of the coating from the hull. On the other hand, dry dock cleaning had a significant impact on fouling, reducing it by 5%.
In order to ensure the fairest possible results, the sample size of over 60 cruise vessels only took into account vessels that were sailing for a minimum of 30 days in the same area, so as to avoid the interference of possible vegetation from other areas. Furthermore, vessels that were clearly identified as showing unusual fouling results –such as a higher degree of coating erosion– were discarded and excluded from the study.
Henrik Dahl, CTO at Eniram highlighted that "the ability to measure hull fouling build up and its financial consequences stems from Eniram's onshore performance monitoring tools and analysis skills using data obtained from the onboard Eniram data collection platform. With Eniram tools the crew is able to accurately identify at all times all the factors that directly affect a vessel's fuel consumption and performance".
The current study monitored the impact of hull fouling on real fuel savings on cruise vessels. Results have shown that this monitoring helps, customers to distinguish the potential fuel impact of different anti-fouling coating systems sailing in different seas and what impact cleaning strategies have on vessel performance over time. Similar Eniram studies are being planned in the future to bring more concrete examples of the costs of untimely cleaning and study the effects of different in-water cleaning techniques and coating systems to hull fouling.
Download the study HERE
OCTOBER 4, 2012 — Midship Marine's Harvey, La., shipyard is building two Incat Crowther design 25 m catamaran passenger ferries to operate in St Thomas in the U.S. Virgin Islands.
They feature a half-height wheelhouse allowing a completely open upper passenger deck with seating for 72 passengers while the main deck passenger cabin will be fitted with seats for 131, plus a pair of wheelchair spaces.
The aft deck houses an ADA compliant toilet and luggage racks. Boarding will be via fold down ramps situated on all four corners of the vessel.
Designed and built to USCG Subchapter K, these boats will meet the recent updates to fire and safety regulations (NVIC 9-97 Change 1) requiring the protection of the embarkation and muster stations from the effects of fire and flooding. To meet these regulations, the vessels will be fitted with A-class structural fire protection and fire doors to the main passenger cabin.
The vessels will be powered by a pair of Caterpillar C32 ACERT main engines, each producing 1,300hp. The vessels will have a loaded service speed of 27 knots, and a maximum speed in excess of 30 knots. The required speed of 30 knots will be achieved at 75 percent MCR.
Length Overall: 26.4 m
Length Waterline: 23.3 m
Beam: 7.75 m
Draft Max: 2.05 m
Draft Hull: 1.3 m
Depth: 2.95 m
Passengers: 200
Crew: 4
Fuel: 3 800 liters
Fresh Water: 750 liters
Sullage: 750 liters
Service Speed: 27 knots
Maximum Speed: 30 knots
Main Engines: 2 x Caterpillar C32 ACERT
Installed Power: 2 x 970 kW (1300hp) @ 2100rpm
Propulsion: 2 x Propeller
Generators: 2 x NL M6502.25 65 kW
Construction Material: Marine Grade Aluminium
Flag: U.S. Virgin Islands
Class: USCG Subchapter K
NOVEMBER 12, 2012 — Seadrill has received a Letter of Award from Husky Oil Operations Limited for a new five-year contract for the newbuild harsh environment semi-submersible rig West Mira for operations in Canada and Greenland. Total estimated revenue potential for the contract, including mobilization and performance bonus is approximately US$1.18 billion for the five firm years.
The West Mira is currently under construction at the Hyundai Samho Shipyard in South Korea and delivery is scheduled for fourth quarter 2014. On delivery from the shipbuilder, the rig will commence transit to the east coast of Canada. Start-up of operations is estimated during second quarter 2015. The West Mira is designed for drilling in harsh environments and water depths up to 10,000 ft. The unit will be equipped with DP-3 (dynamic positioning) as well as 12 point mooring capability, potential for two six ram blowout preventers along with 1,000 ton load path capacity.
The West Mira is one of ten semi-submersible rigs in the Seadrill fleet capable of operations in harsh environments, eight of which have been delivered since 2008. Seadrill has another harsh environment newbuild currently still available for contract, the West Rigel, of similar design to the West Mira, which will be delivered in first quarter 2015 from the Jurong shipyard in Singapore .
John Fredriksen Chairman of Seadrill Limited says, "The West Mira will be the second rig Seadrill will operate in Eastern Canada. This award is the result of the reputation for safe and efficient operations that Seadrill has developed within the offshore drilling industry. After enjoying a safe and successful drilling campaign with Husky Energy in China with the West Hercules, we are pleased that Husky has chosen to extend that relationship with a contract for a newbuild offshore Eastern Canada."
"The award of a five-year contract with commencement in 2015 is also a clear sign of the present tightness in the harsh environment/deepwater drilling market," says Mr. Fredriksen. "Seadrill currently has several options/proposals to increase the newbuild program within this field further. Based on close discussions with our customers we also see several additional attractive long-term chartering opportunities. A decision regarding further investment within this segment is likely to be taken shortly and might also include direct investments from North Atlantic Drilling Ltd."
May 21, 2012 —An unwanted anchor chain accoutrement is preventing a 31,883 dwt bulker from heading for the U.S. from Brazil with a cargo of pig iron. Actor and human rights activist Q'orianka Kilcher has become the latest in a succession of Greenpeace protesters climbed the anchor chain of Clipper Bulk's Clipper Hope.
Dressed in a blue all-weather suit, Ms. Kilcher, who played Pocahontas in Terence Malik's 2006 Oscar nominated "The New World," is currently sitting 20 ft above the water on a makeshift platform. She is accompanied by fellow activist 27 year old Brazilian Leonor Cristina Silva Souza.
Greenpeace says that new research shows how pig iron is helping to destroy the Amazon rainforest and even contributing to slave labor in the region.
Speaking from the anchor chain, Ms. Kilcher said:
"Things like slavery and illegal logging belong in the history books, but sadly they're still a problem for people in modern Brazil. I'm sitting on this anchor chain with my fellow activist Leonor because young people like us around the world will inherit the problems that the older generation has left behind.
"People living in the forest are having their home destroyed just to shave a few cents off the price of a new car. It's time for companies like Ford and GM to get a grip on this problem, and for the Brazilian President to show that she is committed to protecting the Amazon."
Greenpeace says that Brazilian President Dilma Rousseff is currently considering whether to veto changes to the country's forest code that scientists and environmentalists say would lead to an upsurge in deforestation in the Amazon. She has until this Friday to make a decision. Greenpeace and many other groups are urging her to veto the entire new text.
Pig iron is produced by heating iron ore in giant blast furnaces that require huge amounts of wood charcoal to operate. A new Greenpeace report called "Driving Destruction in the Amazon" says that this charcoal is often sourced from rainforest trees and is produced using slave labor. Uncontacted tribes such as the Awa are also under serious threat from the trade.
The pig iron is then exported to the U.S., where it is eventually converted into steel and bought by some of the biggest auto makers in the world including Ford, GM Mercedes and BMW.
JUNE 13, 2012 — New York City-headquartered McAllister Towing & Transportation reports that its latest newbuild plans will see it build a Jensen Maritime designed 5,150 hp twin ASD tractor tug powered by 3516CHD Tier III Caterpillar engines at Senesco Marine LLC, North Kingstown, RI.
The vessel will be the 24th tractor tug and the first Tier III tug in McAllister's fleet.
The newbuild is named for fifth generation family member, and McAllister Towing CFO, Eric M. McAllister.
The tug will be classed with ABS as: Maltese Cross A-1 Towing, Escort Service, FiFi 1 and Maltese Cross AMS.
Towing machinery will include: a JonRie 250 Escort winch with full render/recover on the bow and a JonRie 512 Tow winch with a spool capacity of 2,100 ft of 2 ¼ in wire on the stern.
Senesco Marine LLC has in the last few years constructed twenty ocean going, ABS classed, double hull petroleum barges fitted with ATB coupler systems, and delivered three 4,200 HP, ATB fitted, ABS classed tugs.
On delivery in 2013, McAllister plans to base the tug in the New Bedford, MA, area primarily doing escort work in Buzzards Bay.
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