Page 48: of Maritime Reporter Magazine (June 2022)

TECH FEATURE PROPULSION a close-knit group of owners, and if one ? nds a reliable drive lows the engines to operate at a slightly lower RPM while train solution, that information is shared amongst current po- still maintaining the power required to fully use the water jets. tential customers. Last but not least, one of the most exciting This results in less cavitation within the jets, more reliable recent applications is the Mack 900, a 46-ft. Viking sport ? sh- product, and less breakdowns within the jets, while simulta- ing vessel. Our Northeast distributor, Mack Boring & Parts, neously equating to increased fuel economy for the operators. had to invest signi? cant resources to secure this opportunity. I think it’s also important to understand the bene? ts of the

Since the launch of the boat, it’s been traveling up and down Scania quad engine solution. Many of the CTVs in our horse- the east coast competing in sport ? shing tournaments, and par- power range have traditionally used larger, twin engine ap- ticipating in the Viking displays at many of the winter boat plications, and with the current emission requirements, this shows. The attention it’s getting is rather astonishing, which would require costly and complex exhaust aftertreatments.

is due to the exceptional performance and fuel ef? ciency. This By using quad engines, we eliminate the need for those af- is a 46-ft., 40,000 pound plus sport ? shing boat that tops out tertreatments, offer more available horsepower, and should a over 40 knots, cruises at 34 to 36 knots, all while burning less failure occur, you’re only losing 25% of your propulsion ver- than 60 gallons per hour combined. sus 50%.

Plus, we provided greater variance in operation con? gura- tions. For example, should the need be there, you could utilize

Dave, I know from some previous discussions one engine, two engines, three, or all four based on the load that the Scania D16 is a particularly interest- on their operating requirements. Another major bene? t, given ing unit for you today. What is it about the

CTVs are commonly catamaran style hulls, the quad engine

DI16 that makes it interesting for pairing with solution takes up less real estate in the engine room. Not only water jets and CTV applications?

The Scania engine’s torque tends to plateau earlier in the because the footprints are smaller, but you don’t have that power curve [compared to other engines in its class]. This al- complex and bulky aftertreatment to worry about.

“Another pure pleasure applicat on that we’re seeing success in is the

Nordhavn vessels. They have an N68, an expedit on yacht, and expedit on customers demand reliability.”

Photo courtesy Scania 48 Maritime Reporter & Engineering News • June 2022

MR #6 (34-49).indd 48 6/6/2022 9:05:21 AM