At 10.00 hours on 1 June 1943, U-178 fired a spread of two torpedoes at convoy CD-20 and heard one detonation but could not observe the results. The Salabangka (Master H.A. Broere) in station #51 was struck by one torpedo on the starboard side in the engine room. The explosion killed ten men and destroyed the starboard lifeboats. The ship lost all electrical power and developed a heavy list to port, so the crew was forced to abandon ship after ten minutes.

• Stichting Maritiem Historische Databank.
  Salabangka ID 5664.
• Uboat.net.
  Crew list Slabangka.
• Haersolte, J.W.J. van (ed) (1947).
  Scheepsrampen in oorlogstijd, nr. 270.