"Swordfish" surfaced successfully. However, during the up-angle the freshwater drain collecting tank vents were submerged and sucked contaminated water into the feed system. The steam generator water could not be analyzed immediately because nucleonics laboratory in the stern room had been inundated by the wave of bilgewater. After a while, the leading ELT found the necessary reagents and analyzed samples from both steam generators on the top hat in reactor compartment upper level. By this time the boat was in direct communication with Naval Reactors, which ordered the reactor shut down and cooled down and steam generators drained and refilled. The emergency diesel generator, located in engineroom lower level, initially had water in the generator from the incident but it was drained and the diesel was online before the reactor was shut down. The reactor was cooled down and steam generators were blown down with service air and refilled until all fresh water on the boat was exhausted, which was a couple of hours before arriving back in Pearl Harbor. Subsequent analysis of steam generator water revealed no leakage of reactor coolant into the steam generators.