OVERVIEW: The French E14 is a submarine-launched, passive acoustic-homing torpedo introduced in 1960 for anti-ship use at short range. It was developed to equip French 550 mm submarines and was notably used by the Aréthuse and Daphné classes.

DETAILS: The E14 began service in 1960 as a compact version of the E12, with updates over its operational life that doubled its range and increased speed by roughly 10 knots through battery and motor upgrades. It uses a nickel-cadmium electric battery and passive-only acoustic seeker to home in on surface ship noise. Specifications include a length of ~4.28 m, a diameter of 55 cm, weight approximately 1 650 kg, speed ~25.5 kn, and range ~5 500 yd (~5 000 m), with a 200‑kg aluminium Tolite warhead. It underwent at least two modernization phases over 30 years, improving seeker sensitivity and propulsion.

TYPE: Heavyweight Anti‑Ship Torpedo

FUNCTION: Fired from submerged submarines, the E14 passively detects and homes on acoustic emissions from target ships. Its electric propulsion ensures a stealthy approach in short-range engagements.

NOTE:
IOC: 1960 (E14)
Manufacturer: France (DCN / Naval Group)
Operators: France, Portugal (on Daphné‑class submarines) 
Platforms: Aréthuse‑class, Daphné‑class submarines

SOURCE: 
Naval Encyclopedia “Daphné class”: https://naval-encyclopedia.com/cold-war/france/daphne-class-submarines.php ; Naval Encyclopedia “Aréthuse class”: https://naval-encyclopedia.com/cold-war/france/arethuse-class-submarines.php