While G101 , G103 and G104 sank , G102 ran aground during the attempt .
While G101 , G103 and G104 sank , G102 was sunk as a target by aircraft of the US Navy in 1921 .
While G101 , G103 and G104 sank , G102 ran aground during the attempt and was sunk as a target by aircraft of the US Navy in 1921 .