The survey includes K13's flooding during a dive, K1's collision and scuttling, K5's unexplained loss, K15 sinking at its moorings, and other depth and grounding incidents. K3 descended beyond her intended depth, while K12 and K16 were able to recover after becoming trapped on the bottom. These episodes show the operational burden imposed by complex machinery, many openings, great weight, and difficult surface handling. Most boats were discarded by 1926, although K26 survived until the 1930 London Naval Treaty forced her disposal. The familiar 'calamity class' label can still obscure the different causes of loss and the boats' ability to survive severe damage.
Chapter · 39:04-43:32
What the K-class accident record actually shows
Flooding, collisions, uncontrolled dives, groundings, and sinkings made the class dangerous, but its losses were not caused by enemy action.