Sphyrna

The Sphyrna is a Tier 2 heavy submarine built for decisive underwater strikes—launching long-range heavy torpedoes that can cripple or outright delete capital ships.

With built-in stealth and strong endurance, it excels at stalking sea lanes, ambushing high-value targets, and forcing the enemy to commit to sonar nets and ASW escorts.

Best used for: Assassinating battleships/flagships, long-range underwater pressure, punishing unsupported fleets
Avoid: Surfacing into detection, lingering near sonar coverage, or fighting dedicated ASW forces without support