Some vendors, most notably camera
specialty stores, will only ship to the credit card's billing address no matter what. Most will ship your stuff wherever you want it shipped--boatyards and marinas
are usually good options, or a friend. In third-world places I would check carefully with other boaters before having anything shipped. Some places your stuff is very likely to never show up, and in other places there are certain protocols to follow that might not be obvious--like possibly using a freight forwarding agency that bundles lots of shipments into a container.