Mirror dinghy specification

A technical specification drawing of a Mirror dinghy dating to around 1963

The Mirror is a small, light (i.e. hull less than 10lbs/foot), easy to sail, easy to transport, pram dinghy (pram means it has transoms at both bow and stern). It is the classic dinghy for training, cruising and racing. A stable family boat suitable for all ages and abilities, ideal for just "messing about", it is also raced widely and actively both in the UK and abroad. It's ease of handling makes it a very good single-hander sailed with main and jib. It can also be sailed with the mast in the forward position (if fitted) and no jib (i.e. cat rig). It also has a conventional (i.e. symmetric) spinnaker so all the skills needed on a three sail boat can be used. For racing the crew is two, but when pottering three can be carried. The boat can be rowed or fitted with a small outboard motor - it can then accommodate four or five people. Ideal for training young people, it used to be (sadly no longer) an RYA-recognised Junior Class. Many of the UK's top sailors started in a Mirror! A strict one-design, the Mirror became an International Class, administered by World Sailing (ex ISAF, ex IYRU), in 1990.

These are the specifications for the Mirror.

Portsmouth Yardstick

1387  (double handed, with spinnaker) & 1377 (single handed, no spinnaker) from the 2023 list. The 2009 list also had 1365 (single-handed, with spinnaker). At that time the double handed, with spinnaker PY was 1386, and single handed, no spinnaker was 1371.
LOA = 10 ft 10 ins (3.30 metres)
Beam = 4 ft 7 ins (1.39 metres)
Draft (Board raised) = 4 ins (0.09 metres)
Draft (Board down) = 28 ins (0.70 metres)
Rig = Bermudan or Gunter sloop with optional spinnaker, or cat rig (just the mainsail)
Bermuda mast height (above deck) = 16 ft (4.9 metres)
Gunter mast Length = 10 ft 8 ins (3.3 metres)
Gaff Length = 9 ft 3 ins (2.8 metres)
Boom Length = 7 ft 6 ins (2.3 metres)
Sail Area - Main = 49 sq ft (4.6 square metres)
                 - Jib = 20 sq ft (1.9 square metres)
                 - Spinnaker = 47 sq ft (4.4 square metres)
Hull construction GRP foam sandwich, GRP, GRP/wood composite or plywood
Weight - complete = 135 lbs (61.29 kgs)
              - Hull only = 98lbs (45.5 kgs)
Volume of Hull below Sheerline = 1.15 cubic metres
Volume of Buoyancy Tanks = 0.53 cubic metres
  (46% of Hull)

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