Yesterday while I was riding my bicycle home from work, I swung through the Port Townsend boat yard to check out a pretty unique boat that was in the yard for a new coat of bottom paint. The boat is a 64 foot, SSBN Transit Protection System Screening Vessel, These boats are owned by the US Navy and operated by the US Coast Guard. (SSBN stands for: SS means SUBMARINE, the B means BALLISTIC NUCLEAR WEAPONS and the N mean NUCLEAR power plant). They are tasked with protecting the US Navy Nuclear Attack Submarines when they are moving into and out of ports. This particular boat is from US Naval Submarine Base Bangor, on the Hood Canal here in Washington State (a short distance from Port Townsend).
I don't know a lot about these boats, but I do know that they are US Navy owned and US Coast Guard operated. I would imagine this is because the USCG is technically not military, and as such are US Federal Law Enforcement Officers and can therefore enforce Civil Law, unlike the US Navy.
So, without further delay, here is an album of photos of this unique vessel: