
PADI Divemaster Dave Sienko
360-220-6228
Saving money is what Sound Divers is all about. Cutting fuel consumption
and increasing efficiency improves your bottom line, not the oil companies.
As your boat sits in the water marine fouling occurs, especially in salt water. It's a
well documented fact that a clean slick surface maximizes the efficiency of any vessel.
And while those facts now go undisputed, and owners who regularly use our service can
testify to, the following references can now put some dollars and sense behind our
service.
The U.S. Navy, which arguably consumes the most fuel of any fleet a float, has done
extensive studies. The navy found that on the average fuel consumption went up 10 to 15
percent if the hull of the ship had just a coat of slime! According to OMC Stern Drive
these same figures can be transferred to smaller pleasure boats. In documents outlining
ways to increase performance and save fuel, they claimed the slimed hull would increase
fuel consumption by 10 to 15 percent. And OMC's tests were conducted in freshwater,
providing some startling results, since saltwater growth is more damaging with barnacles
and tube worms. Further Navy studies showed that moderate or heavy fouling causes fuel
consumption to more than double or triple.
The up shot for the Navy was that ships needed to be cleaned at least every four to
seven months to maintain performance. After three months performance loss is near 5
percent and after seven it's topping 10 percent. Just imagine the fuel savings you could
enjoy, by cutting your fuel consumption. That's money in your pocket not the gas
companies.
While fuel savings can increase your interest, imagine keeping your boat at peak
performance and getting up on plane faster! Now imagine all that extra weight barnacles
and mussels hanging from your keel. That picture of speed and performance suddenly
disappear. Just another key reason for keep your hull clean!
Let's not forget our props. While a dirty hull can cut performance by 15 percent, a
fouled prop can cut it by another 10 to 15 percent, the two combined can be nearly 30
percent! And the U.S. Navy found that "cleaning propellers only, will result in a
recovery of 50 percent of the recoverable fuel penalty due to fouling since the ship was
last cleaned."