Straits (Copenhagen & Sicily)

[ichatz]

Straights should have a separate movement rule: They can march across expending all their movement.

In the 19th century it was almost impossible for enemy fleets to pass through the Strait of Copenhagen without being shot at by coastal batteries. The strait consists of 37/15 and 38/15.
Preconditions to shoot at fleets:
-there must be at least one large fortress on either 37/16 (initially Danish)or 38/14 (initially Swedish) -the passing fleet must be in a state of war with at least one of the owners of the fortresses.
Probability of being hit by shellfire % = 50- (MP/2)
MP: Movement points
Example: a 120 cannon battleship (20 MP) has a 40% chance of being struck.
Ships that are hit will suffer losses of between 5 and 10% of their tonnage in marines.
Passing fleets with at least 750 cannons can also shoot at the coastal batteries. There is then a chance that the fortress will be reduced from a large to a medium fortress. The probability is:

Straits of Copenhagen
Fleet Cannons Chance of Fortress Reduction
500-1000 25%

1001-1500 45%
1501+ 60%

If no large fortress is situated at the strait then no shooting will take place.
If a fleet is stopped by another fleet in the straits then it will suffer losses by the coastal batteries first and then it will have its sea battle.
If both fortresses can shoot at a fleet then only one will actually do so.
Ships will only suffer losses when moving into the strait, not when moving out of it.

Firing on fleets from land is only possible at these co-ordinates and at no other position on the maps.

The above enchancement should apply for LARGE and HUGE fortresses. Huge fortresses the hit probability should be 70-(MP/2)