Page 11: of Maritime Reporter Magazine (July 1974)

Bounce your underwater problems off one of our stainless steel props.

We make our stainless steel propellers to stay down there and take it. Go the long count between costly haulouts. (Often 3 or 4 times longer than ordinary props.)

What's our secret?

Well, there's stainless — and there's

Coolidge stainless.

We use all electric furnaces to get an alloy that's cleaner, stronger. A steel that can really take it under water. Plus a totally modern scientific manufacturing process that turns out the best stainless steel propellers in the business.

In sizes through 14-ft. diameter. And in 3-, 4- and 5-blade models. (Cast steel or bronze also available through 13-ft. diameter.)

If you're tired of prop trouble every time you turn around, get yourself a Coolidge stainless steel propeller.

And you've got yourself a real under- water champ.

Coolidge Propeller Company, 1608 Fair- view Avenue East, Seattle, Wash. 98102. . Telephone 206/325-5100.

TURNING POWER INTO PROGRESS AROUND THE WORLD

July 1, 1974 13