Thank you for your gratifying comments.
Since January I moved to head another company. Since this boat section was just my toy ground (no profit no loss but time consuming) and my replacement not that addict to boats, this section has been closed and the know how gone.
Here are some other pieces that they did:
little speed boat:
Classic brass rivet planking dinghy:
23 launch:
5 meters sea kayak only 27 kg
This will surely never happen again