The Heron Dinghy is a dinghy designed by Jack Holt of the United Kingdom as the Yachting World Cartopper (YW Cartopper). The Heron dinghy was designed to be built by a home handyman out of marine ply over a timber frame, but can now also be constructed from marine ply using a stitch and glue technique or from fibreglass. Modern dinghies will usually have built in buoyancy tanks; older craft will have bags or retrofitted tanks.
Since about 1980 boats have been increasingly made of fibreglass, although the Australian association has approved stitch and glue construction .
The Heron is sailed in the UK and Australia and New Zealand, with a few others spread around the world. UK class rules vary slightly from the Australian Rules.[how?] In the UK a spinnaker is permitted and a larger genoa can be used. The UK also permits the use of different rudder shapes and a Bermudan Mast. Other more minor differences exist between the rules.[1] The Heron cartop dinghy was popular in Ireland from the late 1950s until the arrival of the Mirror which was lighter, easier to build, and had built in buoyancy.[2]