NZ coastal trading ship 'Holmglen'

The vessel was only a few years old when she went down off the coast of Timaru in unusual circumstances. No reason could be found after the Navy sent down divers. She sat on the sea bed in upright position with no sign of any damage or malfunction: 15 hands were lost and a diver also died going down to visit the wreck. One of NZ's maritime mysteries. Oil on block canvas by Wallace W. Trickett

For more, see the book The Era of Coastal Shipping: the small motor ships