You will be launching into water, so make sure your craft floats. Wherever possible select materials which are lighter than water (wood and plastics) rather than metal. Obviously there may be parts of the craft which require metal in their design, in which case, make sure these are attached to some kind of flotation device.
Only human power is permitted – no motors, rockets, battery power or sneaky elastic bands.
Your entry must be entirely designed and constructed by the Team; you cannot adapt a light aircraft or hang-gliders.
Your design must be no wider than 5m from wing-tip to wing-tip (assuming it has such things as wings), no longer than 6m from nose to tail (assuming it has these too).
Craft and pilot combined cannot exceed 180 kgs. The pilot on top of the craft must be in a good crouch position, not exceeding 2.5m high, from the top of their head to the flight deck. For two-part crafts (where the base separates from the craft) the launcher base cannot exceed a height of 1.5 metres.
Your aircraft needs to get up the flight deck ramp and be recovered from the harbour, so make it as light as possible – and preferably use materials which don’t become waterlogged (like heavy fabrics). This also applies to your costumes.
Avoid the use of any toxic material or substance which may dissolve into the water. We have a duty to protect the environment we’re using and this means selecting build materials carefully. You are also strongly advised not to use materials which may fragment or be hard to clean up.
When you are designing and building, consider what is likely to happen when it hits the water. Make sure there are no hard or sharp surfaces around the cockpit which may cause injury. Round off those corners and make sure no nails, screws or other sharp fixings project near handholds or the Pilot.
All crafts will be recovered from the water by the safety team and they will dispose of the crafts thoughtfully.