The Seraphim destroyer has a few attributes which need to be noted.
1. Lazer cannons.
2. Higher proportionate torpeedo damage.
3. Shorter ranged main cannons.
4. Submerge capability
5. Completely helpless vs air.
All these capabilities combined mean that it is highly ammenable to micro control and strategic gameplay. Such as the following (I hope you don't mind my creative names)
The
Hi-Lo: Enter firing range and focus fire on vunerable targets with main cannon. Then submerge and retreat, or attach with torps. Useful for engaging a fleet of vunerable vessels with surface fire escort. Such as UEF torpeedo boats with destroyer/frigate escort.
The
Lo-Hi: Close range while submerged. Then surface while in close manouvering position. Useful against vessels with surface guns which outrange. Such as Cybran and Aeon Destroyers, or Battleships. Eliminates the firing range advantage.
The
NIGYYSOAB (Now I've Got You You Son of a Bitch) Manouver: Send an entire submerged battle group consisting of T2 Destroyer, T1 Submarine and T3 Submarine hunter. Undetectable to radar. The T3 subs offer AA when surfaced. The formation can blow up a base or ACU before there is time to respond. No place is safe.