Why do you want to ship it by sea? It's not because of the recent spate of air accidents is it? The chances of your miner going missing due to some aircraft malfunction is much, much lower than the chances of it being lost at sea. I've seen what happens to shipping containers when the seas are rough and it ain't pretty.
did you know that antminer will cost 280 $ and the cost of shipping 10 Kg will cost me 420$ and what you think if the shipping
cost more than one antminer