CREATE TABLE "delta_iii_class_significant_dates" (
  "num" text,
  "shipyard" text,
  "name" text,
  "laid_down" text,
  "launched" text,
  "commissioned" text,
  "fleet" text,
  "status" text
);

Question: What is the status of vessel number K-223?
SQL: SELECT "status" FROM "delta_iii_class_significant_dates" WHERE "num"='K-223';