| Founded | c. 2I200 (507 AL) |
| Weyr | Ista? |
| Current Sea Holder | ? |
| Etymology of name | Shape of bay it's built on |
Half-Circle Sea Hold is an isolated sea hold on the western coast of the Nerat Penninsula. It was founded at the end of the Second Interval by a man named Rinir, and construction was still going on when the Third Pass begun. At the time, it was under Benden's protection. Half-Circle was the final destination of Mastercomposer Petiron and was the home of Menolly. The hold is very conservative.
It's most remarkable feature is an enormous cavern, protected by a volcanic overhand, large enough to hold its entire fishing fleet.