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[edit] Bombs

Sail to great fish isle and speak to the postman, then sail to windfall island. Go to the back of the shop with the bomb on its sign, climb the vines and crawl through the small space. A scene will start in it one of the pirates will say the password ("swabbies") over and over again. Go to the pirate ship and say the password in the pirate ship; you must do a harder version of Nergo's test. You get bombs for completing it.

[edit] Get to Jabun

Sail to the back of Outset island and destroy the wall with your bombs and blow up the wall.