Yanmar: Single-minded Power

Friday, April 05, 2002
The age-old argument among mariners concerning twin-engine versus single-screw boats has taken a new twist. Recent results comparing a single-engine Yanmar 6LP-series diesel sterndrive to twin gas outboards gave the diesel engine advantages in nearly every category. Producing 300 crankshaft hp at 3,800 rpm, the 6-cylinder, 6LP-STZE is one of Yanmar Diesel's most popular engines among boatbuilders. Its light weight and small footprint have made it the choice for many gas-to-diesel and diesel-to-diesel repowering projects as well. Equipped with a Mercruiser Bravo Three sterndrive, the combination weighs only 1,100 pounds and, on a 31-ft. open console fishing boat, burns less than 11 gph at nearly 35 mph. That's over three miles per gallon. According to Richard Mastry of Mastry Engine Center, the engine will outperform twin gas outboards, hands-down. "Tests were run comparing a single Yanmar 6LP against twin 250-hp EFI gas outboards on the identical boat. The Yanmar engine produced a 40% increase in cruising range over the outboards. That's important, especially for offshore fishermen." According to Yanmar Diesel's Greg Eck, a single 6LP-STZE offers other advantages over outboards besides fuel economy. "Since the diesel engine is mounted below decks rather than hanging off the transom with a bracket, the boat's center of gravity is lower," said Eck. "This has definite advantages in boat handling, especially in rough waters." Eck further explained that the diesel has additional advantages over outboards when used on the tender for larger yachts. "It is a matter of safety," said Eck. "If there is an emergency aboard the yacht, a crewmember can quickly deploy the tender and head to shore to pick up parts, medical supplies or additional personnel. The diesel engine's economy provides the extended range necessary for the tender to make the trip quickly without running out of fuel." Yanmar Diesel, addition to the 6LP-STZE, manufactures other marine engines from 9.1 to 500 hp. Circle 4 on Reader Service Card www.marinenewsinfo.com
Maritime Reporter June 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Volvo Penta Offer D4, D6 Series Engine Keel Cooling Option

Volvo Penta of the Americas has announced the availability of a keel cooling option with D4 and D6 marine diesel engines to meet customer demands in the North American marine commercial market.

Giant Vessel to Change Offshore Decommissioning Game: Analyst

The new Allseas vessel, 'Pieter Schelte', is able to replace the previous slower method of removing topsides piece by piece with one lift, meaning a decommissioning

DMC Builds the Smallest Ever Nozzle

Damen Marine Components (DMC), part of Damen Shipyards Group, announced it has smashed its propeller nozzle world record by 33 percent downwards. This downsizing

Marine Propulsion

Volvo Penta Offer D4, D6 Series Engine Keel Cooling Option

Volvo Penta of the Americas has announced the availability of a keel cooling option with D4 and D6 marine diesel engines to meet customer demands in the North American marine commercial market.

Wärtsilä's JV with CSSC to Expands Engines Range

Wärtsilä and China State Shipbuilding Corporation (CSSC) have signed an agreement to establish a joint venture for manufacturing medium and large bore medium speed diesel and dual-fuel engines.

Wärtsilä and CSSC in 2-stroke engine JV

Wärtsilä and China State Shipbuilding Corporation (CSSC) have signed an agreement to establish a joint venture, which will take over Wärtsilä’s 2-stroke engine business.

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Navigation Offshore Oil Port Authority Ship Electronics Ship Simulators Sonar Winch
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: 0.1044 sec (10 req/sec)