On a rolling 12-month basis, U.S. outboard engine wholesale shipments were up 6 percent year over year through April.

That was for the National Marine Manufacturers Association’s control group of manufacturers, which represents 95 percent of the market.

Gains were led by four-strokes and higher-powered engines, the NMMA reported.

Total retail sales based on warranty card registrations for the period were up 7.9 percent.