A Heavenly Twins HT27 cruising catamaran in the slings at Southsea Marina, Portsmouth for a marine pre-purchase survey. These sturdy cruising catamarans are often used for low budget blue water cruising as they offer a huge amount of accommodation for a relatively low cost with their small length – thus making mooring fees, hoisting fees and ancillary maintenance costs much lower than one might find with larger yachts. This type has been found to be very stable and several of the type have made long distance passages without incident. As with any older vessel, a marine surveyor is on the look out for structural issues, this one had major GRP work to the bridgedeck area some years ago by JWS Marine Services in Southsea. Rudders can also be an issue with this design, often appearing fairly weak and in need of reinforcement.