CREATE TABLE table_1898 ("Position" FLOAT, "Sail Number" TEXT, "Yacht" TEXT, "State/Country" TEXT, "Yacht Type" TEXT, "LOA  ( Metres ) " TEXT, "Skipper" TEXT, "Elapsed Time d:hh:mm:ss" TEXT)

When 6606 is the sail number what is the type of yacht?
SELECT "Yacht Type" FROM table_1898 WHERE "Sail Number" = '6606'
SELECT "Yacht Type" FROM "table_1898" WHERE "Sail Number" = '6606'