Change to Shipbuilding/Upgrades

[GrubbyZebra]

Change the shipbuilding system to include a slot for each upgrade type. 

I.e.
Shipbuilder selects frame and planking wood type, mast type (rig refit module), structural mods (any module that increases HP or crew capacity),  and hull treatment (speed/turning mods). One slot for each (maybe 2 for structure) would eliminate stacking, and have thickness solely determined by planking wood choice.

If you have an existing ship and want to have the upgrades changed, then a shipyard must be used to "refit" the ship at a cost of gold and/or materials and labor hours.

Knowledge books (or officers like in NA:L) should be available to the end user to increase things like ship handling proficiency (yard turning, sail setting speed, rudder half time, gunnery accuracy, reload time, boarding, etc). 

Also, all upgrades and materials to make ships/upgrades should be craftable/mineable. 

Edited January 15, 2018 by BPHick