You could try and build a chest. Mine what you think you need and put it in the chest. Build teleport to get back there quickly. Now use that first bosses power to run only ore to where ever you are going to process it and teleport back to get another load. Rinse and repeat.
Sailing is kinda pointless with karve, with longboat moving 2-3 nodes(or 2-3 crypts) at once is much more viable