Other club boats include Ballyholme Insect "Mantis" - same as RNSA 14 but built for Ballyholme Yacht Club from late 1940's

(about RNSA 14)

http://www.arthur-ransome.org/Members/mikem/rnsa-14ft-dinghy/view

The Royal Naval Sailing Association 14 ft dinghy (known throughout the fleet as the “Rensa dinghy”) was the main recreational and racing dinghy carried by most ships of the British and Commonwealth Navies from the early 1920s to the mid 1960s when they were superseded by the grp bo’s’un class sailing dinghy. RNSAs were constructed in the dockyards (and at HMS Caledonia) by shipwright apprentices as a major test job, with all parts (including the phosphor bronze fittings) being made in the shipwright shop.   read on