Sweet bro, thanks for sharing this!! +1I just got back from a recent trip from my town to another in Southeast Alaska.
We are an island chain, served by the Alaska Marine Highway, aka the Alaska Ferry. The road systems here are pretty much limited to one island at a time, until you get as far north as Haines or Skagway. Using the ferry lets me go from one town to another and have my bike when I get there. This is also open to touring bikers or adventurers, which is why I am posting this.
The driver of a vehicle gets a discount on their fare, mine was 50% on the last trip.
On the ferry, the bike stays on the car deck. You bring your own tie down straps, there are attachment points aplenty to secure to. The car deck is closed to passengers once the ship is underway, so the bike is secure. The crew helps spot you off in corners to be out of the way of larger vehicles.
Once your bike is secure, you take your bags and go up the stairs or elevator to the other decks. Staterooms with shower and toilet are available, or many camp out on the floor of the observation deck or solarium deck. It is best to reserve ahead if you want a stateroom. There are public restrooms and showers if you dont get a stateroom. There are coin operated storage lockers to secure your stuff.
There is a cafeteria serving three meals a day, plus sandwiches etc.
Towns along the route vary in the time of layover. Many are long enough to take a walk, many people traveling with dogs take advantage of this.
You can stop for a few days in any town, and then catch another ferry to go on. With a bike it is very flexible for space availability. If you are prepared to camp, it can be even more of an adventure on the backcountry road systems of each island.
The view as you cruise in the ferry is the inside passage of the Alexander Archipelago. Whales, eagles, porpoise, fish, fishing boats, yachts.and large tracts of forested wilderness.
Just want to advise of this option as a nice bike adventure, anywhere from Bellingham, WA to Haines, AK. Google the Alaska Marine Highway for more details. It can be a round trip, or one leg with a more interior route through British Columbia on the other leg. Think about it, maybe see this special place...