CREATE TABLE "jdf_coast_guard" (
  "name_of_ship" text,
  "length" text,
  "max_speed" text,
  "crew_capacity" text,
  "class" text,
  "builder" text,
  "delivery" real
);

Question: Who built the ship that is 42.8 m long and was delivered in 2007?
SQL: SELECT "builder" FROM "jdf_coast_guard" WHERE "length"='42.8 m' AND "delivery"=2007;