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Hello, boater! Iowa's online boating course has moved. Click here to go to the latest version of the Boat Iowa course—the official boating safety course of the Iowa Division of Natural Resources.

Go to the new Iowa course

The following course material is for reference only. Please go to the new course to complete your Iowa certification.

Types of Engines and Drives

The types of engines and drives on boats or other powered vessels, such as a PWC, are outboard, inboard, and stern drives. Outboards have more power per pound of weight than do inboard engines. Inboards have automotive engines adapted to operate in marine environments. Stern drives have quieter and more fuel-efficient engines.
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The Boater's Guide of Iowa, A Handbook of Boating Laws and Responsibilities
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Online boating license and certification course last modified: April 13, 2011
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