list_ship = []

class Ship():
    def __init__(self, length,name):
        self.length = length
        self.name = name
sh_1_1 = Ship(1,"sh_1_1")
list_ship.append(sh_1_1)
sh_1_2 = Ship(1,"sh_1_2")
list_ship.append(sh_1_2)
sh_1_3 = Ship(1,"sh_1_3")
list_ship.append(sh_1_3)
sh_1_4 = Ship(1,"sh_1_4")
list_ship.append(sh_1_4)
sh_2_1 = Ship(2,"sh_2_1")
list_ship.append(sh_2_1)
sh_2_2 = Ship(2,"sh_2_2")
list_ship.append(sh_2_2)
sh_2_3 = Ship(2,"sh_2_3")
list_ship.append(sh_2_3)
sh_3_1 = Ship(3,"sh_3_1")
list_ship.append(sh_3_1)
sh_3_2 = Ship(3,"sh_3_2")
list_ship.append(sh_3_2)
sh_4_1 = Ship(4,"sh_4_1")
list_ship.append(sh_4_1)