---

1. It drains into the rigging tunnel and it very useful. The earlier boats didn't have this drain, and water always accumulated on the forward deck (from dive gear, swimming, etc.) until you got on plane.

2. Spru marks from the manufacturing process.

3. Don't know where the seam is on the transom, but I recall someone posting years ago that repairs are best done with the cap on, on the 21.