Panels

Panels are the main way to protect the hull of your ship, from boarders, storms and cannonfire. They can be crafted at any Assembly Station, and come in a variety of types:

Small Panels
The basic panel, covers a small square area. When crafted they come in a number of different forms: corrugated, flat. Which design is seemingly random.

Medium Panels
Cover a medium rectangular area.

Large Panels
Cover a large rectangular area.

Window
These cover the same area as a small panel, but have a small hole in the middle.