GP ship impounded during anti-Trident action
jk | 25.02.2007 11:28
...
Later that day:
UPDATE: Twenty military police stormed the ship and smashed their way onto the bridge of the Arctic Sunrise shortly after 5pm following the day-long stand-off. The military police cut the anchor chain and towed the ship into the nuclear base. All onboard have been arrested for being in a restricted area.
See

and

The Arctic Sunrise is due to berth on the Thames in early March, ahead of the parliamentary debate and vote on Trident replacement.
jk