The Back Cove 34O is a 12.06-metre current production motor yacht from Back Cove Yachts. Official specifications list a 3.63-metre beam and 0.64-metre draft.
Back Cove lists Twin Mercury V8 300HP or twin Mercury V10 400HP outboards. Fuel capacity is 916 litres and fresh-water capacity is 227 litres. Back Cove publishes overall length including the outboard configuration as 12.06 metres.