During the summer peak period Julia, the Swansea–Cork ferry, has additional sailings which pass the lookout while we are on watch.  The Sunday daytime sailing usually departs Swansea Ferry Port at 09:00 and the duty watch keepers log the ship when it passes us an hour and twenty minutes or so later.
Here it is around 7 nautical miles away passing Worm's Head Julia passing the lookout, 08 Aug 10outside the Helwick Bank on the 8th August 2010. 
Photo By Mike Relph.

Other photos of Julia can be seen here while details of sailing times, etc. can be found here.

Previous articles on the Swansea-Cork ferry can be found here and here.