Main Deck Aft Perisicope shears and antennas Main deck forward Spacer for image fit
Conning tower Spacer for image fit
Forward end of submarine Spacer for image fit
After end of submarine. Spacer for image fit
Center of submarine Spacer for image fit
Bottom of submarine Spacer for image fit
Main Deck Aft Perisicope shears and antennas Main Deck Forward Conning Tower After Torpedo Room Maneuvering Room Motor Room After Engine Room After Engine Room Lower Flat Forward Engine Room Forward Engine Room Lower Flat After Battery Compartment (Crew Berthing) Crew's Mess and the Galley Radio Room Control Room Pump Room Forward Battery (Officer's Country) Forward Torpedo Room
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Sanitary Tank #2 is located in the after end of the after battery compartment.

There is piping from the galley sink, scullery, crew's heads (toilets), and showers into this tank. To prevent floating matter from Pampanito being seen by the enemy alerting them to her presence, the sewage would be stored in the tank. When Pampanito was far from the enemy, the discharge valve was opened and compressed air used to blow the tank's contents to sea.

Because the tank has openings both inside of the boat and to sea it is a thick walled tank capable of withstanding full submergence pressure even though it would normally only be blown on the surface.

Sewage is corrosive and the interior framing of the tank has badly degraded, and the lacy material in the center cut away. These photos were taken just after cleaning, blasting to bare metal, and painting the tank.

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Version 2.00, 18 Mar 2017