CREATE TABLE table_27779 ("Position" FLOAT, "Sail number" TEXT, "Yacht" TEXT, "State/country" TEXT, "Yacht type" TEXT, "LOA  ( Metres ) " TEXT, "Skipper" TEXT, "Corrected time d:hh:mm:ss" TEXT)

What was the sail number of Two True?
SELECT "Sail number" FROM table_27779 WHERE "Yacht" = 'Two True'
SELECT "Sail number" FROM "table_27779" WHERE "Yacht" = 'Two True'