Electric propulsion is also significantly quieter than a gas or diesel motor. In Maine, the small but fast-growing segment includes nearly 200 farms for shellfish, fin fish, and edible seaweed. Strater and Leathers are among the first in their business to trade gas motors for electric propulsion — a switch they say they’re hoping to accelerate. He said he wants to see other small business owners able to “take a reasonable swing” at electric propulsion. (Photo by Julia Tilton / The Daily Yonder)Like Leathers, Strater and Planson also work year-round.