diff --git a/ui/PLAN.md b/ui/PLAN.md
index c4f3c97..0d975f3 100644
--- a/ui/PLAN.md
+++ b/ui/PLAN.md
@@ -3321,9 +3321,10 @@ Decisions:
    rendered result is verified by a high-contrast screenshot during
    development plus the existing fog / render-on-demand e2e.
 
-## Phase 30. Ship Class Calculator
+## ~~Phase 30. Ship Class Calculator~~
 
-Status: pending.
+Status: done (gitea `go-unit` + `ui-test` green; deployed to dev). UI
+polish deferred to a later pass; the core functionality is in place.
 
 Goal: replace the standalone Phase 17/18 ship-class designer with a
 fused designer + calculator living in the sidebar. It shows the ship