I've always been curious if he would be okay if he could get to a country like Iceland. I know traveling to Iceland by plane is a no-go because of passenger man

I've always been curious if he would be okay if he could get to a country like Iceland. I know traveling to Iceland by plane is a no-go because of passenger manifests and the US government's willingness to down any plane to check if he is on board. However, I don't get why he hasn't attempted to get smuggled out of the country by boat via a northern port along Russia's huge coastline. With enough sympathetic supporters, I would imagine that this is a very workable plan since surveilling ocean ports and ocean vessels is an order of magnitude more challenging than surveilling air transport.