CREATE TABLE "season_4" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "vessel_type" text,
  "vessel_operator" text,
  "narrated_by" text,
  "original_air_date" real
);

Question: Name the vessel type for beluga shipping
SQL: SELECT "vessel_type" FROM "season_4" WHERE "vessel_operator"='Beluga Shipping';

Question: Name the vessel type for dof subsea
SQL: SELECT "vessel_type" FROM "season_4" WHERE "vessel_operator"='DOF Subsea';

Question: Name the most number in season 
SQL: SELECT MIN("no_in_season") FROM "season_4";

Question: Name  the narraed by for beluga shipping
SQL: SELECT "narrated_by" FROM "season_4" WHERE "vessel_operator"='Beluga Shipping';

Question: Name the number of season for beluga shipping
SQL: SELECT COUNT("no_in_season") FROM "season_4" WHERE "vessel_operator"='Beluga Shipping';