CREATE TABLE table_69906 ("Kanji" TEXT, "Name" TEXT, "Builder" TEXT, "Laid down" TEXT, "Launched" TEXT, "Completed" TEXT)

What is the completed date of ?
SELECT "Completed" FROM table_69906 WHERE "Kanji" = '蓬'
SELECT "Completed" FROM "table_69906" WHERE "Kanji" = '蓬'