CREATE TABLE table_60638 ("Order Year" TEXT, "Builder" TEXT, "Model" TEXT, "Length  ( ft. ) " TEXT, "Engine/Transmission" TEXT)

What is the order year of obi builder and 05.505 model that is 30 feet long?
SELECT "Order Year" FROM table_60638 WHERE "Builder" = 'obi' AND "Length (ft.)" = '30' AND "Model" = '05.505'
SELECT "Order Year" FROM "table_60638" WHERE "Builder" = 'obi' AND "Length (ft.)" = '30' AND "Model" = '05.505'