Directed-energy pattern. The catalog’s only non-projectile weapon; whether it operates on laser, plasma, or another principle is reserved for the writers’ room.
Plausible specialty issue rather than standard kit. May be a Threshold technology or Watcher-architecture-derived (per the gravimetric-drive precedent).
Open canon: power source, beam type, sustained-fire envelope, and origin (human-engineered vs Watcher-derived) are reserved for the writers’ room. The fleet’s “no fanservice” register applies; if this weapon appears, it should carry weight.