Underwater PBCF Installations Bring Fuel Savings

Posted by Michelle Howard
Tuesday, November 26, 2013

Last month Hydrex installed  Propeller Boss Cap Fins (PBCF) on two tankers during their respective stops in Ghent and Antwerp. As a result of the underwater operation, the ships will not have to wait for their next drydock visit to start benefitting from the fuel savings the PBCF’s will bring them.

The Propeller Boss Cap Fins (PBCF) is a device for propeller efficiency improvement developed by Mitsui O. S. K. Lines, Ltd. The PBCF can recover energy loss of a propeller hub vortex in the propeller’s backward flow. This decreases fuel consumption by 5% when operating at the same speed, or boosts speed by 2% with the same fuel consumption.

The 5% energy saving effect has been verified by world research institutes including International Towing Tank Conferences (ITTC) and by owners.

With the current emphasis on global environment problems, the demand for the PBCF has been continually growing and this as an energy saving device and an environment-friendly product because it realizes a 5% reduction in CO2, NOx and SOx gases emission from vessels.

The first operation was performed on a 183-meter tanker berthed in Ghent. After the team arrived at the vessel’s location with one of the Hydrex workboats, they started the operation with a full inspection of the propeller. Next the diver/technicians cleaned the area where the spinner cone (PBCF) was to be installed. They then lowered the cone into the water and positioned it on the propeller. When this was done, grease was inserted in the space underneath the propeller cone for lubrication and the bolts were put on torque and secured with wire, finishing the replacement of the PBCF. The Hydrex team worked around the clock to finish the operation as quickly as possible.

The exact same procedure was used during the operation in Antwerp on a 130-meter tanker. The alignment of both Propeller Boss Cap Fins was monitored on an underwater video camera and supervised by the manufacturer’s specialist on the workboat.

Last year Hydrex had already replaced two PBCF’s on a 110-meter tanker in Singapore. This was the first underwater installation of a PBCF, according to the manufacturer.

By performing the operation on-site and underwater, the owner of both tankers could immediately start enjoying the fuel savings the system offers. Otherwise he would have had to wait for the next scheduled drydocking before having the PBCF’s installed. This would have cost him up to two years of savings. Calculations show that he will have earned back the money of the underwater installation in about eight weeks, so the savings for the customer are enormous

Maritime Reporter January 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Bangladesh Aims to be World's 'First Solar Nation

Residents of Islampur, a remote village in the northern Bangladeshi district of Naogaon, were stunned one night last summer when the darkness was suddenly illuminated

India Not Pressurized by US-China Deal

Indian Prime Minister Narendra Modi said a climate deal between the United States and China does not put pressure on India, but that global warming itself was reason to take action.

U.S., India to Seal Nuclear Deal

The United States and India have reached a breakthrough on two issues holding up civil nuclear cooperation between them, U.S. President Barack Obama told a news conference in New Delhi on Sunday.

Marine Propulsion

Xunlong Shenzhen Orders Dutch-designed Ferry

CoCo Yachts B.V. inks contract with Xunlong Shenzhen Ferry Company for one Coastal Cruiser 300 Xunlong Shenzhen Ferry Company has ordered a Coastal Cruiser 300 ferry from CoCo Yachts,

Lindner Sees Strong 2015

On the last day of what proved to be a busy Workboat show in New Orleans, Mikael Lindner, President, Scania North America, sat with Maritime Reporter & Engineering

Vane Brothers Orders Two Tugs from Chesapeake

Chesapeake Shipbuilding has signed a contract with Vane Brothers to build two new tugs, marking the 13th and 14th tugs that Chesapeake will have built for Vane Brothers in the last several years.

Ship Repair & Conversion

MSC Sinfonia Upgradation at Fincantieri Shipyard

Extension operations on MSC Sinfonia, the second out of four MSC cruise ships to undergo the Renaissance Programme of enhancements, have begunin the past days at Fincantieri shipyard in Palermo.

Dales Marine Fills Its Scotland Docks

Ship repair and specialist fabrication firm Dales Marine reports a first time achievement as all of its seven docks around Scotland are full for the first time today.

Captains' Union Blasts McCain’s Keystone Amendment

International Organization of Masters, Mates & Pilots Asks: If Keystone is a “Jobs Bill” Why Would Congress Want to Send 400,000 Maritime Jobs in 26 States Overseas?    S.

Tanker Trends

Yamal LNG Inks Deal with Gazprom to Sell LNG in Asia

A trading subsidary of Russian gas producer Yamal LNG has signed a long-term supply contract with a trading subsidiary of Gazprom, under which liquefied natural

Maran Orders 4 LNGCs from DSME

Korean shipbuilder Daewoo Shipbuilding & Marine Engineering (DSME) will build four large Liquefied Natural Gas Carriers (LNGC) for Maran Gas.   The four LNGCs

Tepco, Chubu Buying 6 LNG cargoes from Vitol

Japan's Tokyo Electric Power Co and Chubu Electric Power Co,, are expected to buy a total of six cargoes of liquefied natural gas (LNG) from Vitol and GDF Suez in their first joint tender,

News

Bangladesh Aims to be World's 'First Solar Nation

Residents of Islampur, a remote village in the northern Bangladeshi district of Naogaon, were stunned one night last summer when the darkness was suddenly illuminated

India Not Pressurized by US-China Deal

Indian Prime Minister Narendra Modi said a climate deal between the United States and China does not put pressure on India, but that global warming itself was reason to take action.

U.S., India to Seal Nuclear Deal

The United States and India have reached a breakthrough on two issues holding up civil nuclear cooperation between them, U.S. President Barack Obama told a news conference in New Delhi on Sunday.

Underwater Engineering

Hofste, Montijn Nominated to Supervisory Board Fugro

Fugro N.V. announces that the Supervisory Board of Fugro nominates Mrs. P.H.M. Hofsté and Mrs. A.H. Montijn for appointment as members of the Supervisory Board

Subsea Crane Takes a Long Journey

Last September the test bed in Rostock was the stage of a single lift of the RL-K 7500 subsea crane. The same crane was then loaded and shipped to the South Korean customer.

Australia’s Submarine Dilemma

The government of Australia came under fresh pressure to reject Japanese submarines as the spearhead for a new undersea fleet, with one of the country’s top security

 
 
Maritime Careers / Shipboard Positions Maritime Security Naval Architecture Pipelines Pod Propulsion Port Authority Salvage Ship Electronics Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | terms and conditions | 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: 0.3406 sec (3 req/sec)