Maine has no boating license, but qualifying operators must carry a Boating Safety Education Card. Anyone born on or after January 1, 1999 must be at least 12, complete an approved course, and carry the certificate to operate a recreational motorboat over 25 horsepower. Children under 12 may operate under 10 horsepower alone; from 10 through 25 horsepower they need supervision. Personal watercraft operators must be at least 16, with the same birth date cutoff for education.

Authorized motorboat renters may take a rental agent’s temporary course, valid up to 14 days or the rental term, whichever is earlier. Exemptions include qualifying Maine guides, certain Coast Guard credential holders, and supervised dealer test drives. Maine IFW administers the requirement.

Source: Maine Department of Inland Fisheries and Wildlife (maine.gov)

In Maine, carry approved life jackets, stay sober, use properly registered boats, follow personal watercraft limits, and protect inland waters from invasive species. The Maine Department of Inland Fisheries and Wildlife requires a Coast Guard approved wearable life jacket for each person; children 12 or younger must wear one while a recreational watercraft is underway, subject to listed exceptions. BUI includes 0.08% BAC or higher for operators 21 and older and any alcohol for operators under 21. Motorboats generally must be registered, with the registration aboard. No one under 16 may operate a PWC, and PWCs cannot run between sunset and sunrise. Motorized craft on inland waters must display a Lake and River Protection Sticker.

Source: Maine Department of Inland Fisheries and Wildlife, maine.gov/ifw (maine.gov)

The best time for most Maine boating is late June through August, with July and August the peak for the warmest water and busiest coastal destinations. Inland lakes warm faster and are prime from late June through August, while ocean water remains brisk even when temperatures peak in late July and August.

Late May to mid-June and September are shoulder periods, but northern and mountain lakes may remain ice-covered until mid-to-late May, and spring and fall water is cold. River flows are generally highest during spring runoff and lower in summer and fall. Atlantic hurricane season runs June 1 through November 30, with activity typically highest from mid-August into October.

Source: Maine Bureau of Parks and Lands and Maine Geological Survey (maine.gov)

Some of Maine’s best boating choices are Casco Bay, Moosehead Lake, Flagstaff Lake, the Penobscot River Corridor and Chain of Ponds. Casco Bay offers saltwater boating in the Greater Portland and Midcoast region, while Moosehead provides a vast inland lake at the gateway to the North Woods.

In western Maine, Flagstaff Lake is a large, shallow reservoir north of the Bigelow Mountains. The Penobscot River Corridor offers remote river and lake paddling through Maine’s undeveloped forest. Near the Quebec border, Chain of Ponds links Natanis, Long, Bag and Lower ponds by short thoroughfares.

Source: Maine Bureau of Parks and Lands (maine.gov)

Popular Maine boating destinations include Portland’s Casco Bay, Peaks Island, Boothbay Harbor, Linekin Bay and Camden on Penobscot Bay. Casco Bay draws boaters with islands, beaches, coves and inlets; Peaks Island is an easy ferry outing from Portland with walking and bicycling options. Boothbay Harbor has a strong maritime character, while nearby Linekin Bay is explored on tours that continue to lighthouses, islands and marine wildlife. Camden sits in the heart of Penobscot Bay, with a working harbor full of fishing boats and schooners.

Source: Maine Office of Tourism (visitmaine.com)

Alongside the marinas on this page, Casco has 2 boat rentals.