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

Technology

Next Generation Bridge Concept

Rolls-Royce, VTT team on new Ship Intelligence Vison   For decades the maritime industry has long-theorized of emulating the “airline model” in uniformity and

Wärtsilä Propulsion Solution for 3 Tugs

Three large new escort tugs contracted by Norwegian operator Østensjø Rederi, will feature Wärtsilä dual-fuel (DF) engines integrated with a customized gas storage

Oman to Implement Maritime Communications Network

Oman to roll out the national maritime communications network along its lengthy coastline soon, says Al-Madakhel Investment that has been tasked with design, construction

Marine Propulsion

New YANMAR EPA Tier III Engine

YANMAR America introduced its new EPA Tier III compliant commercial marine diesel engine. Rated at 755 mHP and 1,900 rpm, the new 20.38-liter 6AYAM-ET uses a full mechanical control system.

Volvo Penta Debuts New Marine Engines

Volvo Penta introduced the first two models of its next-generation sterndrive marine gasoline engines. The new 4.3-liter catalyzed V6 engines, rated at 200 and 240 hp,

The Art of Propeller Making

The world’s biggest propellers have their cradle in the North of Germany. MMG – Mecklenburger Metallguss GmbH – has manufactured for more than 65 years propellers for ships,

 
 
Maritime Contracts Maritime Standards Naval Architecture Pod Propulsion Port Authority Salvage Ship Simulators Shipbuilding / Vessel Construction 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: 0.1804 sec (6 req/sec)