World’s Most Powerful Outboard Nears Release

Get a quick look at Seven Marine's 557-hp outboard motor that was on display at the Annapolis Boat Show.

Seven Marine has developed the most powerful outboard motor in the world, a four-stroke that delivers a whopping 557-hp. Here, our longtime contributor, John Page Williams gets a brief synopsis from Eric Davis of Seven Marine aboard an Intrepid at the Annapolis Boat Show. Look for Boating‘s test of this engine coming soon.


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