Please select your home edition
Raymarine AUS 2018 Aug - Axiom - Leaderboard

Back Cove tests twin 300-hp Yamaha and 350-hp Suzuki outboards on its new 34O

by Peter Janssen 10 Sep 2018 02:22 UTC
Back Cove 34O © Peter Janssen

It's not often that you can compare the performance of a brand-new boat with different power configurations, but Back Cove has just released that information for its new 34O (for outboard) cruiser that will make its public debut at the Newport International Boat Show, starting Sept. 13. The standard power for the Maine-built couple's cruiser is two 300-hp Yamaha outboards; two 350-hp Suzukis are an option. Here's how they performed.

Back Cove tested the two power options three days apart in mid-August with about the same fuel, water and load in similar sea conditions on West Penobscot Bay near the factory in Rockland, Maine. In both cases, the time to plane was the same: 4.5 seconds. So was the time of 0 to 30 mph: 9.8 seconds.

At top speed, the Suzukis were 3 knots faster, 40.5 knots to the Yamahas' 37.5 knots.

And at the lower end, 3000 rpm, the Suzukis were more than 2 knots faster, 13.6 knots to the Yamahas' 11.5 knots. At that rpm, the Suzukis also were more efficient, burning 12.6 gph for a range of 243 nm, while the Yamahas burned 12.5 gph for a range of 207 nm. The sound levels were the same, at 72 dB(A).

Throughout the normal cruising range the two were generally not far apart.

At a normal cruising speed of 3500 rpm, the Yamahas ran at 17.0 knots, burning 17 gph, with a range of 225 nm and dB(A) of 76.

At 3500 rpm the Suzukis ran at 18.5 knots, burning 18.0 gph, with a range of 231 nm and a dB(A) of 78.

At 5000 rpm, the Yamahas ran at 31.4 knots, burning 37.5 gph, with a range of 188 nm and a dB(A) of 78.

At 5000 rpm, the Suzukis ran at 32.4 knots, burning 36.6 gph, with a range of 199 nm and a dB(A) of 85.

At a wide-open 6000 rpm, the Yamahas ran at 37.5 knots, burning 52.9 gph, with a range of 159 nm and a dB(A) of 86.

At 6000 rpm, the Suzukis ran at 40.5 knots, burning 58.4 gph with a range of 156 nm and a dB(A) of 88.

To read more visit

This article has been provided by the courtesy of the Cruising Odyssey.

Related Articles

Mystic Moon cruises up to Glacier Bay, Alaska
John and Kathy Youngblood living the dream John and Kathy Youngblood have just left Glacier Bay, one of the most beautiful spots in the world, on their 2004 Selene 53 Mystic Moon. The picture above shows Kathy in front of Reid Glacier, one of the 50 named glaciers there; it's 11 miles long. Posted on 20 Apr
Outer Reef 70 on Australia's Great Barrier Reef
Take a look at Aroona, a 70-foot Outer Reef in Australia's famed Great Barrier Reef If you're thinking about a real charter adventure, take a look at Aroona, a 70-foot Outer Reef in Australia's famed Great Barrier Reef, home to some of the most exotic cruising, fishing and diving grounds in the world. Posted on 14 Apr
Nordhavn building new 80 footer
Contemporary styling and 12-knot performance Nordhavn is building its first 80, another battleship-solid, blue-water cruiser but with a new, more contemporary look and styling. Powered by twin 375-hp John Deere diesels, the new Nordhavn 80 will top out at 12 knots and cruise at 9 knots Posted on 13 Apr
The Hamiltons Cruise from Amsterdam up to Sweden
Pushing the season, they left Amsterdam at 0500 on March 19 The worldwide cruising adventures of James and Jennifer Hamilton continue, as the Seattle couple arrived earlier this week in the Swedish town of Kalmar on the Baltic Sea on their Nordhavn 52 Dirona. Posted on 8 Apr
New floating bungalows
How to downsize with a boat/home on the water Here's something new: Floating Bungalows, built to ABYC standards, complete with a hull number and 550-square feet of living space. They cost only $225,000. Posted on 1 Apr
Sign up now for CUBAR Rally
Next fall from San Diego to La Paz, Mexico Planning for next fall's CUBAR rally, 910 nm from San Diego to La Paz, Mexico, is well under way, with a kickoff dinner on May 18 at the San Diego Yacht Club. The rally, which is open to powerboats with a minimum range of 450 nm at 8.5 knots Posted on 31 Mar
Lyman-Morse starts building new, creative cruiser
The new, high-performing Hood 57 Downeast boat The new, high-performing Hood 57, a Downeast boat with creative input from many directions, is now under construction at the Lyman-Morse yard in Thomaston, Maine. Posted on 30 Mar
Is your boat smarter than you are?
Now we're getting smart boats too Numarine will introduce its new 78HTS as "the world's most innovative smart yacht" at the Palm Beach International Boat Show. The boat actually was displayed at the Consumer Electronics Show in Las Vegas to promote its new artificial intelligence systems Posted on 16 Mar
Your old GPS might not work after April 6
Warning from the Dept. of Homeland Security If you're cruising anywhere on or after April 6, you might want to check your GPS, particularly if it's an older one. It might not be working. Posted on 2 Mar
New 30 Power Cat with twin outboards at Miami Show
The new 30 has a single cabin and a head and shower Aquila is introducing its newest power cat, a 30-footer with twin Mercury outboards, at the Miami International Boat Show. The latest entry into the Aquila fleet, which goes up to 48-feet, the new 30 has a single cabin and a head and shower. Posted on 16 Feb
BandG AUS Triton2 FOOTERMarina Exchange FOOTER 1Multihull Central Aquila 36 FOOTER