Iron and Wood Ship’s Signal or Line-throwing Cannon, 19th Century Consign Now DeptMaritime ArtsSizeHeight 6 in. Length 15 in. Width 6 ½ in. Sold for $1,270 Iron and Wood Ship’s Signal or Line-throwing Cannon, 19th Century. Height 6 in. Length 15 in. Width 6 ½ in. Please note that this auction has ended. Click here for an overview of this auction.