table: [['vessel', 'built', 'max speed', 'length', 'breadth', 'flag', 'propulsion'], ['gallion', '2010', '30 knots', '20 m', '6.5 m', 'united kingdom', 'prop'], ['gardian 1', '2010', '30 knots', '20 m', '6.5 m', 'united kingdom', 'prop'], ['gardian 2', '2010', '30 knots', '20 m', '6.5 m', 'united kingdom', 'prop'], ['gardian 7', '2010', '30 knots', '20 m', '6.5 m', 'united kingdom', 'prop'], ['gardian 9', '2010', '30 knots', '20 m', '6.5 m', 'united kingdom', 'prop'], ['marianarray', '2011', '26 knots', '17 m', '6 m', 'united kingdom', 'jet'], ['smeaton array', '2011', '30 knots', '20 m', '6 m', 'united kingdom', 'controllable pitch propeller']]
ref: Smeaton Array is the only ovessel with Controllable Pitch Propeller
template: [ENT] is the only ovessel with [ENT]