PS Monarch is one of the three active paddle steamers in the United Kingdom.

Construction started in 1984 and it was launched in 1994, although the steam plant originated as a 19th-century tar pump from Caerphilly gas works.

[3] The Monarch was designed and built by Brian Waters, who was a key volunteer in finally restoring the paddle steamer Kingswear Castle.

Construction was originally started in 1984, but it took him almost twenty years before she was finally finished, entering commercial service in 2003.

The PS Monarch was based at Island Harbour Marina on the Isle of Wight for three seasons from 2008 until 2010, offering excursions in the River Medina.