The wallywhy100 is a 21.46-metre current production yacht in Wally's wallywhy family. Official technical data gives a 5.73-metre maximum beam and 1.70-metre draft.
Wally lists Volvo Penta D13 IPS 1350 propulsion. Published unladen displacement is approximately 48.00 tonnes. Fuel capacity is 4,600 litres. Water capacity is 900 litres. Maximum speed is up to 27 knots. Cruising speed is up to 24 knots. Published range at cruising speed is 340 nautical miles.