CREATE TABLE table_48872 ("Model" TEXT, "Length Over All" TEXT, "Beam" TEXT, "Sail Area" TEXT, "Crew" TEXT, "Comments" TEXT)

Which Crew has Comments of daggerboards. design: roy seaman?
SELECT "Crew" FROM table_48872 WHERE "Comments" = 'daggerboards. design: roy seaman'
SELECT "Crew" FROM "table_48872" WHERE "Comments" = 'daggerboards. design: roy seaman'