Part 2: Anything we can do to make operation that much more efficient is best.
By Diane M. Byrne — April 2004
Peter Fredriksen, director of communications and marketing for Viking Yachts, attests to the success of working with the company. Fredriksen says Viking has been using Delta “T” axial fans on all models for about a year now, and he says the average normal-operation temperature inside its engine rooms is about 95°F. “Anything we can do to make operation that much more efficient is best,” he explains, adding, “after all, what you don’t see can cause problems down the line.”
But airflow isn’t the only concern you should have for your engine room. Eliminating moisture is also important. Consider the following scenario: You’re out for a day’s cruise or even running offshore in pursuit of game fish when your boat gets hit by a wave and ends up drawing spray in through the exterior vents. Chances are it’s probably happened to you or someone you know. Delta “T” designed moisture eliminators to filter out fine mist and water droplets from the air in large yachts’ engine room, and now it’s done the same for boats in the 40- to 60-foot range.
Regardless of whether a boatbuilder’s models regularly encounter large waves or only occasionally head offshore, Delta “T” designs the moisture eliminators to be mounted on the air-intake vents leading to the engine room. As the illustration on the previous page shows, the units have narrow vertical channels that simultaneously allow dry air to pass through and catch fine mist or large droplets. The moisture runs into the channel walls and collects in special gutters, thereby draining away and preventing engine corrosion and wear.
Scott Kinney of Grand Banks says the moisture eliminators have worked well for its yachts so far. The Eastbay 58 Flybridge, equipped with standard 800-hp Caterpillar 3406E diesels (twin 1,400-hp Caterpillar 3412s are optional powerplants), features the unit. “In some boats, one can find salt residue throughout the engine room, but not when using Delta “T” Systems’ equipment,” he explains.
So now that the big-boat ventilation systems have trickled down to medium-size craft, will further advances in technology allow even smaller boats to benefit in the coming years? Murray sees the potential, but “with a give and take”: Since smaller boats naturally have smaller engine rooms and therefore less available space, inevitably some room will have to be taken away from the accommodations space.
Of course, this is a trade-off battle that some builders have been waging with owners for years when it comes to other engine-room features. Perhaps now buyers and builders alike will learn to cool it, literally and figuratively.
Delta “T” Systems Phone: (561) 848-1311. www.deltatsystems.com.
This article originally appeared in the March 2004 issue of Power & Motoryacht magazine.