[Phoenix-D]

Fairly simple one.

At the begining, all ships make a check, based on whatever factors you like. Say its out of 100, all modifers equal (same ship design, whatever)

Lowest numbers move first. A tie for any particular ship, the defender goes first.

ex:
6 ships, 3 side A 3 side B. B defends.
A1 rolls 50
A2 rolls 25
A3 rolls 80

B1 rolls 80
B2 rolls 10
B3 rolls 30

So the order would go:
B2
A2
B3
A1
B1
A3

Another:
A1 rolls 85
A2 rolls 57
A3 rolls 87

B1 rolls 76
B2 rolls 47
B3 rolls 94

Order:
B2
A2
B1
A1
A3
B3