AAed the torpedoes with help of Paint.Net; added a scale by the dimensions.
New 'Replitorp' Torpedo Launch/Ordnance Handling System to be installed in the primary hull. It will be a large device around twenty-two meters long shaped like a thick, flat inverted U installed above the spinal weapon mount, with the actual launch components situated either side of the SWM. Its 'ordnance storage' is accomplished with large containers of powdered alloys for the hull, engine, guidance, and other torpedo components.
The replicator chambers are situated at the top of the inverted U, and they feed into magazines which enable a burst-fire capability of five rounds each for even the largest torpedo type. Replication is guided by editable computer-stored blueprints for these weapons. The system can manufacture standard photon torpedoes, but it is usually configured for any one of a family of very large, highly sophisticated, and very maneuverable weapons of unprecedented lethality.
The magazines feed into a simple 'F-22 Lightning' type drop launcher, vastly different from a standard photon tube's subspace accelerator barrel. This is enabled by the self-contained nature of the Replitorp missiles.
The 'smallest' member of this quartet of weaponsis used as an 'anti-ship' weapon and is a ten-meter-long device shaped like a highly-streamlined spike with fins. It sports a combined high-output warp/impulse engine mounted on a gimbal at the rear of the weapon. Anterior to this is the guidance computer; the missile's brain. Four popout fins act as aerosurfaces within atmosphere and mount secondary sensors. The warhead ahead of this is a very large M/AM charge driving a powerful and highly-destructive bomb-pumped graser for both a spherical blast and a 'shaped-charge' effect; in effect the Twenty-Fifth Century equivalent of a High-Explosive Dual-Purpose Munition. Estimated yield is 150 megatons spherical and 60 megatons beam yield with a beam dispersion of one hundred microradians. The nose cone tip houses the primary sensor and shield-disrupting 'penetration aid' devices to increase effectiveness against a shielded target. The M/AM charge can be replaced with a quantum warhead to double the spherical blast yield. This weapon is the Class Alpha Missile.
The next two are quite similar in most respects; being 16.2 and 16.5 meters long respectively, with 600MT(S)/200MT(B) yield. These are the Class Bravo and Bravo Prime weapons.
The large weapon is an incredible 18.3 meters long with a massive 1.1GT(S)/450MT(B) yield! This is the terrifying Class Charlie Missile.
Akula's Replitorp system can fabricate and launch Class Alphas at a rate of two per second per launcher. A Class Charlie can be fabbed and launched in ten seconds.
EDIT: updated pic.
EDIT: 22m long, not 19 for the Replitorp Machine.