I had my 50ft
boat with 14'8" beam and 8'6"
draft shipped in 2004 with no problem. I know of a friend's 75'
race boat shipped
Seattle to Chicago this year. The shipper will probably need two chase cars, have to
route off I-5 depending on height, and have an oversize load
permit. Bridge clearance was the routing issue. Additionally, the driver with have restrictions on the hours that the oversize load can be on the road at certain points, i.e. not at night, not in/thru a city at rush hour, etc.
Before you ship, consider yard prices, as I know Seattle is more expensive than Socal.