A night visual approach resulted in illusions that resulted in a water impact. Everyone on board was rescued but not before highlighting many survivability & SAR enhancements, as well as triggering improved helideck lighting and TAWS improvements.
A 40s loss of control occurred during the transition from visual to instrument flight during a disorientating night offshore TO without an external horizon.
A Fire Dept set up a landing site at night under the edge of powerlines. The HEMS pilot looked for the wires using NVGs but could only see the towers.