Question:  what's the date entered service with ships name Koningin Wilhelmina
SQL: SELECT "Date entered service" FROM "1-11662133-3" WHERE "Ships name" = 'Koningin Wilhelmina';

Question:  what's the date where ships name is Zeeland entered service
SQL: SELECT "Date entered service" FROM "1-11662133-3" WHERE "Ships name" = 'Zeeland';

Question: what is the maximum tonnage where date entered service is 25 March 1986 
SQL: SELECT MAX("Tonnage") FROM "1-11662133-3" WHERE "Date entered service" = '25 March 1986';

Question: what are all the date withdrawn for service entered on 21 November 1945
SQL: SELECT "Date withdrawn" FROM "1-11662133-3" WHERE "Date entered service" = '21 November 1945';

Question: what are all the date withdrawn for Twin Screw Ro-Ro Motorship
SQL: SELECT "Date withdrawn" FROM "1-11662133-3" WHERE "Type of Ship" = 'Twin Screw Ro-Ro Motorship';

Question: what are all the date withdrawn for Koningin Beatrix
SQL: SELECT "Date withdrawn" FROM "1-11662133-3" WHERE "Ships name" = 'Koningin Beatrix';