There are two Folktrax recordings of Bob Roberts.
Lou Killen has three: "A Seaman's Garland", "Sailors, Ships and Shanteys", and "Steady as She Goes".
The Boarding Party has three CDs.
There'a Coming of Age by Jim Mageean & Johnny Collins
There's Sam Larner's Now is the Time For Fishing
There are three fine ones by Danny Spooner
There are three CDs recorded at the Mystic Sea Music Festival

There are lots of other very good ones.
All available from CAMSCO Music, of course