Ram
From YPPedia
When one ship (in sea battle) attempts to move into the square that another ship is occupying, the other ship is rammed and both ships suffer damage. If a ship hits a rock, it takes a small amount of damage. The edges of the board also act as rocks, except for the far edge (opposite the safe zone) of a flotilla, blockade or Atlantis board, which acts like a wind current facing inward.
There are four size classes of ships: small (sloops, cutters and dhows), medium (longships, baghlahs, merchant brigs and war brigs), large (merchant galleons and war frigates), and grand (grand frigates). If the ramming ship is in a larger size class than the ship being rammed, the smaller ship is usually "pushed" out of the square it was in, although collision mechanics can often be more complicated than this.
When a ship hits another ship, it inflicts damage upon the other ship based on its size. For example, if a sloop rams a merchant brig, the sloop receives the equivalent of 0.667 medium cannonballs worth of damage, and the merchant brig receives the equivalent of 0.5 small cannonballs worth of damage.
Ram damage
| Ship Name | Equivalent no. of hits by shot size | Size class | ||
|---|---|---|---|---|
| Small | Medium | Large | ||
| Sloop | 0.5 | 0.333 | 0.25 | Small |
| Cutter | 0.5 | 0.333 | 0.25 | Small |
| Dhow | 0.5 | 0.333 | 0.25 | Small |
| Longship | 0.5 | 0.333 | 0.25 | Medium |
| Baghlah | 1 | 0.667 | 0.5 | Medium |
| Merchant brig | 1 | 0.667 | 0.5 | Medium |
| War brig | 2 | 1.333 | 1 | Medium |
| Merchant galleon | 2.5 | 1.667 | 1.25 | Large |
| Xebec | 2.5 | 1.667 | 1.25 | Large |
| War frigate | 3 | 2 | 1.5 | Large |
| Grand frigate | 4 | 2.667 | 2 | Grand |
Note that, if two ships are facing each other and both move, the results will be different depending on the size classes of the ships. If the ships are in the same size class, they'll move into each other simultaneously, and deal a single collision's worth of damage to each ship. However, if they are in different size classes, two collisions worth of damage are dealt to each ship. Our best explanation for this is that the larger class sizes move "before" smaller class sizes within a single phase of ship movement. For further details, and more complex collisions, and those involving winds and whilpools, see the article on Collision mechanics.
When a ship hits the edge of the map or rocks, it takes the amount of damage shown in the table below. For example, if a grand frigate hits rocks it receives the equivalent of 1.5 large cannonballs worth of damage. The numbers correspond to exactly 3 SF blocks worth of damage to the ship, or one twelfth full SF damage.
Rock damage
| Ship Name | Equivalent no. of hits by shot size | ||
|---|---|---|---|
| Small | Medium | Large | |
| Sloop | 0.5 | 0.333 | 0.25 |
| Cutter | 0.625 | 0.417 | 0.3125 |
| Dhow | 0.625 | 0.417 | 0.3125 |
| Longship | 0.75 | 0.5 | 0.375 |
| Baghlah | 1 | 0.667 | 0.5 |
| Merchant brig | 1 | 0.667 | 0.5 |
| War brig | 1.25 | 0.833 | 0.625 |
| Merchant galleon | 1.5 | 1 | 0.75 |
| Xebec | 1.75 | 1.167 | 0.875 |
| War frigate | 2.5 | 1.667 | 1.25 |
| Grand frigate | 3 | 2 | 1.5 |
Historical Note
Prior to release 2004-04-28, there was no such thing as grappling. The swordfight began when both ships occupied the same square on the battle navigation board. Also, before this, the edges of the board acted like winds that pushed ships back onto the board.
