Scillonian IV is a planned passenger ship to be based at Penzance in Cornwall, England, operated by the Isles of Scilly Steamship Company for the principal ferry service to the Isles of Scilly.
The ship was ordered as a replacement for RMV Scillonian III which has been in service since 1977. The new vessel, designed by BMT, will be 72m long and carry 600 passengers. It will be able to travel at 18 knots and is designed specifically to improve passenger comfort.
The Isles of Scilly Steamship Group signed contracts with French shipbuilding company Piriou in January 2024 for the construction of both the Scillonian IV and a new freight vessel due to be named Menawethan. The new vessels are expected to enter service in 2027.