The submarine is a Project 613 (Whiskey-class) vessel originally built by the Soviet Union in 1952.
KRI Pasopati 410 was one of the twelve submarines delivered to the Indonesian Navy as part of a procurement program in the early 1960s.
The interior retains its authentic original layout, including narrow corridors and original control instrumentation.
The submarine underwent a restoration process to ensure it could be safely opened to the public as a stationary exhibit.
The vessel measures approximately 76.6 meters in length.
Monumen Kapal Selam, or Monkasel, is a decommissioned Soviet-era Whiskey-class submarine preserved as a museum in the heart of Surabaya. The KRI Pasopati 410 served in the Indonesian Navy starting in 1962 before being retired and transformed into this landmark. Visitors can walk through the original internal compartments, including the torpedo rooms, command center, and sleeping quarters. The vessel is displayed in a purpose-built park setting along the banks of the Kalimas River. The site features an air-conditioned audiovisual room explaining the vessel's history and military significance. The facility also provides access to a children's play area and a small outdoor pool near the riverbank.
The view from the riverbank looking up at the full length of the submarine's hull, or standing on the deck near the conning tower.
Climb through the hatches carefully, as the passageways are extremely narrow and feature low ceilings.
Visit during weekdays to avoid large school groups and weekend crowds, which can make maneuvering through the tight interior difficult.
Carry a small bag or wear a backpack on your front to avoid getting caught on interior equipment.
Avoid visiting during the peak heat of the day, as the interior of the metal hull can become very warm despite ventilation systems.
Remove hats or bulky accessories before entering the cramped submarine interior; maintain silence inside the command deck.
