this mod look so USEFUL! that barrel and the steer ship.. is quite useful! I am going to use it for my ship that i am working on. for a while!
and one question, the closed barrel, can you place it like how woods are placed (vertical or horizontal)
EDIT: i see that it cannot be placed vertically.. these closed barrel.. and i also noticed that its an incompleted mod.. but also WIP... which i noticed from this thread mentioning about "WIP"
there is one important thing you need to fix.. thats is "how to install the mod".. i found the instruction but its lacking few information. like i dont know if i needed the "Core" mod and the Medieval mod to make it work in minecraft.. That would make it clear and understood. so Please fix or improve your thread to provide a better information.. and that goes same for your own website of this mod.
i would like to suggest few ideas that could improve your mod better:
1) can you make the mod able to use the vanilla minecraft's texture pack but if its replaced by other resource pack.. which it also can use these texture pack.. (planks, woods, etc) for the models that you have created... NOTE: i have seen few mods that has the same capability of using texture/resource pack as a basis texture pack for the models such as firewoods, log chair or barrel chair.. a good example of mod would be "Fence Overhaul" it doesn't have any texture pack, so it used the minecraft's own texture pack or the resource pack i am using as a basis texture pack. You could look in it to improve your mod.
2) IF possible, you could make a feature where i can add any items into the empty barrel, but the maximum amount would be 64.. but i will let people decide the maximum amount that a barrel could hold.. if they support my suggestion.
One more thing to add: crate is more like a modern storage than barrel.. but i haven't seen in any history beyond 1900s that used crate in old ship and pirate ship. Accorded to my research that it was used in somewhere 1900s to 1930s to today.. so barrel is a classic storage that people used to store items/foods/drink/powder way before 1900s. Thats the reason why i suggested number 2 above.
Thats all i can think of.. I hope this suggestion could help you out with this mod.