CREATE TABLE table_8846 ("Year" FLOAT, "Ship" CLOB, "Departed From" CLOB, "Departed On" CLOB, "Returned On" CLOB)

From how many years did tampa, FL depart?
SELECT SUM("Year") FROM table_8846 WHERE "Departed From" = 'tampa, fl'
SELECT SUM("Year") FROM "table_8846" WHERE "Departed From" = 'tampa, fl'