[Spaceships] Pair of wing-mounted weapons

[Stormcrow]

Suppose you've got a ship with a pair of fixed, wing-mounted beam weapons that always fire together, as might appear in some older science-fiction films. How are those represented in Spaceships?

• A single major battery, with the understanding that the two weapons count as a single weapon in the system?
• Two major battery systems, with the understanding that a hit with one is a hit with both, but one can be disabled or destroyed while the other can still fire?
• A medium battery with two weapons plus cargo space?
• Something else?