In order to make the structural junction in a sailing boat, for example between the shell and the bulkheads, many nautical builders use overlap joints. This technique is expensive and could be replaced by direct adhesive junction without overlap. Structural adhesive bonding has been tested on three boats prototypes : a motor boat of 5.75 m long, and two sailing boats one of 5.5 m long and one of 10 m long. The originality of those boats is the measurement device using strain gages included on some of the junctions during the boats construction. Gages and sensors have also been placed on the shell, the keel and the rigging: the stress state of the bonded junctions under sailing in different conditions can then be qualified. Therefore, testing has been managed on specimens. A coupled loads tests (bending + compression) on tee samples seems more pertinent to qualify tee junction for shipbuilding applications.