Time to throttle back

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Viking 50 Convertible

Time to back

Posted 31 July Written by Landry

Fuel and a economy have and designers on efficiency of horsepower

you punched hole in fuel tank a 50-plus-foot the diesel gush out than the at which engines devour fuel, says marine industry

It’s no Boatbuilders, engine — and themselves — powerboats consume amounts of making them the least forms of That’s the we pay. the helicopter be worse,” naval architect Codega. “Water dense, and only so you can to move out of way.”

Codega some effective to improve and cut on fuel at a boatbuilding conference. lighter and boats, scale accommodations, and the latest technologies. That Codega’s message.

hear,” his said after lecture, titled Speed Powerboats, Less be They praised philosophy, shook hand firmly patted him the back.

that was extent of response. Virtually changed.

A later, companies still building same wide, planing hulls, down with heads, galleys, triple-spreader outriggers a gazillion

But there signs things changing. With prices on rise again the economy slumping, some and designers realizing they embrace a attitude, one stresses more engineering and speed and

“I guess am in enviable position getting to ‘I told so,’ ” Codega, who 20 years been turning proven designs the likes Regulator, Carolina Hines-Farley and Manufacturing (Great trawlers). “Now is a It’s easier do this when times good.”

Will become more Will the accept or ask for changes once economy turns In other will it business as or the of something Ken Fickett change will

“The days the stylists boats are says Fickett, of Mirage which builds trawlers and fishing boats ). “I think we go back where we We need pay a more attention the engineering goes into boat. As come out the recession, be the who have their homework will rise the top.”

Even if begin to more fuel-efficient there’s no that consumers be interested, Michael Peters, and president Michael Peters Design (www.mpyd.net in Sarasota, He believes will be to give their 900-hp, vessels.

“These and $5 gallon [fuel] will have hit us third and time,” he “Until then, don’t think will change boating habits boat companies turn the

Case in is a Peters designed the mid-1980s a 48-foot displacement boat a beam just 11 and a of 14,000 A pair 145-hp diesels the boat 26 knots. was built that was he says.

also believes will be to accept boat with accommodations in interests of the load burning less “To build lighter, narrower you have give up hell of lot of says Peters, has designed Chris-Craft, Cabo Regal, as as many powerboats.

Unlike Fickett believes the if-you-build-it-they-will-come especially given economic and climates. He’s on a 40- to dayboat that get an 2 nautical per gallon a pair 300-hp Volvo IPS pod Codega is the vessel.

going to a lot the beach,” Codega (www.loucodegana.com referring to and amenities. be fully long and but it be enclosed sort of an enclosed boat.”

Good

To combat inherent inefficiency, must be lighter, which more boats cored construction than solid and wood according to and builders. a number applications, new, efficient propulsion such as and Cummins Diesel’s Zeus, be used of conventional though they initial cost. boats must narrower, not to cut on weight also to them to through the more efficiently.

All of elements went the design, and building the express from mJm (www.mjmyachts.com ), are known their efficiency. got to it through,” Doug Zurn, designed the 34z and 40z. “You just throw in a shell and for the

Zurn says hours of went into 40z (the is for The entire and deck cored, impregnated epoxy resin a vacuum-bagging Both boats a waterline-length waterline-beam ratio about 3.5 1, relatively for an cruiser. The with twin gets about nmpg at knots. The with a 380-hp Yanmar and conventional and shaft, 2 nmpg the same In the of boats, pretty efficient, the speed. it down and things get better.

knots is to some and slow others. No what the you can fuel by down and the boat/engine’s economical rpm — the “sweet spot.”

Stefan Czuplak a 105-foot with twin MTU Detroit At 20.5 the Azimut 159 gallons hour; at knots it 26 gph. can burn gallons and 500 miles go 1,300 and burn same amount fuel,” going says Czuplak.

Down East Duffy 31 ) with single 380-hp diesel consumes gph at knots, or 2 nmpg. her down 12 knots, she burns gph, or nmpg. That’s good mileage a recreational

In contrast, 33-foot twin gasoline inboard cruiser burns 30 gph 29 knots is lucky get 1 Push that to 34 and the rate can than double. big center with triple 4-strokes traveling 45 knots more than gph for more than nmpg. You a price speed.

In recent sea a Viking Convertible at comfortable cruise 30 knots 74 gph its twin MAN 12-cylinder diesels. That to 0.4 and a of 496 miles on 1,200-gallon fuel And keep mind that numbers were during ideal says Peter Viking director communications (www.vikingyachts.com


“This boat fresh, with clean bottom, tuned custom and a payload of fuel, water, he says. boat’s speed connected at hip not to horsepower weight, but to the pertaining to bottom, the of water, state, fuel and various factors. Also, boats are propped or using propellers are out pitch, and factors are detrimental to efficiency.”

Many owners — those with boats — do well put their on extreme and not everything they when simply for a of fishing cruising.

Operating boat properly a difference, says Codega. see so boats running their bows far down,” says. “Pay to trim When running calm water, as much the boat of the as possible. [the bow] till it and then it back a bit.”

single

Twin of course, a slew benefits to boating experience, as redundancy get-home power one engine and better maneuverability. Plus, single engine to be harder to the same as twins, power plant factors into equation.

On flip side, engines consume fuel than maintenance and costs double, a twin-screw often leaves access in engine room.

2002, when bought a with a engine, people me funny says John who had Grand Banks Maramor, built a single Caterpillar diesel. I think of single-engine is increasing. of that due to bow thruster how much helps.”

Pod-drive has softened of the drawbacks, says a Soundings writer whose 2008 article his trawler the new Grand Banks “The performance pod drives truly a leap over drives,” he “The smaller of the machinery and design enable its isolation the accommodations improving access.”

Both Volvo and Cummins claim that with their get 20 30 percent mileage than conventional inboard But the in efficiency often offset installing larger says Love. American market demanded a amount of and, as result, lower-horsepower of these are not available,” he

Viking 50 Convertible

That demand ever-increasing horsepower be waning, boatbuilders say. have become aware of rates, says Sweetland, a at Atlantic Company in Maine, builder Duffy boats. few years people hardly asked us much fuel boat burns,” says. “Now a consideration.”

Darren Plymale, manager of Yachts in Fla. a Cruisers and dealer, agrees. says owners must run boats great to compete fishing tournaments, example, are so at speeds — to 14 — and aside more to reach destinations. “It’s chugging,” says “Today, it’s chic to money.”

Capt. Wright is chugger. “Bosses trying different to save he says. we save boss money, save our So instead running a 74 at knots and 142 gallons hour on passage from City to Maria, Fla. chugged at average of knots and only 10 “I was blown away the fuel says Wright. trip took and his crew six It would taken him and crew three — three-and-a-half days 29 knots, with a heftier fuel

It’s not the big looking to fuel. Doug runs a Oldport launch a semi- pilothouse and cuddy cabin V-berth and head. A Isuzu diesel the semidisplacement “It’s very driven and at about knots,” says who is Stony Creek, At 12.5 the boat

5 nmpg, in the couple of he has keeping it 10 knots conserve fuel. Logan’s version chugging.

Walter Szeezil Terra Ceia, would love get 5 though he’s getting about

nmpg at knots aboard Contender 27 center console. sweet spot his twin Yamaha HPDI is 3,200 and those the engines were recommended that boat the Contender online forum. had considered with 4-strokes, he’s now he didn’t. Contender isn’t to handle extra 250 of twin on the says Szeezil, ventures offshore fish the of Mexico. certainly strong the hull porpoises too Lesson: If have the pick your carefully.

Change mentality

Efficiency just about or saving Just because boat owner well-off financially not mean or she happy spending amounts of to run vessel, says Polster, vice of displacement builder Kadey-Krogen (www.kadeykrogen.com). “They want to 40, 50, gallons per says Polster.

points to pool of A decade the majority buyers were now they for less half of company’s business, says. “People moving to from other says Polster. fuel efficiency a big why some moving to displacement boat. typical motoryacht, points out, seven to times the to just twice as as a trawler. The 44, for gets 3.5 at 7

Some boaters dream of at

7 but the factor can deceiving and differences minimized, Polster. Think and hare. a trawler, wake up get under he says. crew can some breakfast, a shower, the paper. have to all of things before under way dealing with faster planing

Larry Graf developed a new powerboat sips fuel goes faster 7 or knots. Graf, former president Glacier Bay has launched new company, Power Catamarans ). His 26-foot prototype powered with single 110-hp mounted in starboard sponson. shape of sponson offsets pulling power the right-hand to maintain tracking. Graf it “Hydro-Warp” The sponson also 35 smaller than port hull, cuts down drag and The result: 15 knots, boat gets estimated 5.6 he says.

“I wanted create something really fits today’s time fuel prices what people asking for,” says. “It’s I think boating industry and if wasn’t doing like this, boating becomes elite sport. $1,000 to on fuel a weekend not realistic a lot people.”

The production Aspen cat is 28-footer powered a 150-hp and it scheduled for in August, Graf, whose is based Snohomish, Wash.

the opposite of the Augusto “Kiko” has the goal as but he to get in a — specifically, single-screw semidisplacement similar to Maine lobster The boat envisions is single-screw 34-footer a plumb and narrow a long and a bottom. With 315-hp diesel, would get 4 nmpg 16 knots. need to that if have [a that does to 40 or more will have expenditures in says Villalon, founder of Concepts in Coral, Fla. built the for some the biggest brands in business.

The for today’s is to a different in new or the class,” as calls them. need a class that still enjoy without so speed,” he “[They] have stop and the roses.”

related articles:

article originally in the 2009 issue.

Viking 50 Convertible
Viking 50 Convertible
Viking 50 Convertible
Viking 50 Convertible
Viking 50 Convertible
Viking 50 Convertible
Viking 50 Convertible

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