Velero III under construction [1090B], [1930-1931]

"Velero [III] launching". View of port side Velero III (from aft forward) under construction in dry dock, Captain Allan Hancock looks on, workman handling hot rivets, Hancock drives the first rivet, workmen on scaffolding around ship skeleton, view of port side Velero III (from aft forward) under construction in dry dock, rotating driveshaft in engine room of Velero III, cams moving pistons up and down, workmen on scaffolding around ship skeleton (upsidedown and black/white inverted footage), cams rotating around driveshaft, Hancock looks on as large hull plate is maneuvered, workman handling hot rivets, Hancock drives the first rivet, workmen on scaffolding, [Los Angeles Harbor, Los Angeles, California, USA, 1930-1931].