CREATE TABLE table_name_75 (gross_tonnage INT, ship VARCHAR, material VARCHAR, date_commissioned VARCHAR)

Name the sum of gross tonnage for wood on date more tahn 1846 for comissioned and ship of esk
SELECT SUM(gross_tonnage) FROM table_name_75 WHERE material = "wood" AND date_commissioned > 1846 AND ship = "esk"
SELECT SUM("gross_tonnage") FROM "table_name_75" WHERE "date_commissioned" > 1846 AND "esk" = "ship" AND "material" = "wood"