Yes, consider making a Karve which has 4 storage slots and sail to a copper deposit near the shore. Then just load the Karve's storage up with 4 stacks of 30 for 120 copper/tin and sail it back to base.

Or bring the materials for a workbench and cart. Head out to the ore deposit and place the workbench then build the cart. Now load up the cart, I would not really got past 2000-2,500 weight in the cart or it will become very hard to pull. Now pull the cart back to base.