migrate to web-weevr

src/pages/astral/vessels.md

@@ -138,6 +138,21 @@ During each round of pursuit or combat, PCs occupying these roles may attempt to
 -   **Lyffan ships**: Always carry a Bombard as one of their weapons
 <!-- - **Stral ships**: -->
 
+### Upgrades
+
+#### Hide Covering
+
+The hide of one (or more) animals is spread out across the hull.
+
+-   Grants an AC bonus if the animal in question has better AC than the ship.
+-   For every 2 difference in AC, the ship gets +1.
+
+**Cost**: Varies by bonus.
+
+-   **+1** costs 20% of capacity in gp.
+-   **+2** costs 40% of capacity in gp.
+-   **+3** costs 80% of capacity in gp.
+
 ### Weapons
 
 #### Ballistae