Thanks all for the positive comments - much appreciated . For those of you wondering how it was done , collision avoidance set to off . RTH set to hover , Landing LED light manually on to assist the downward looking ground proximity sensor . Loss off signal was never going to happen as I was inside the ship on the same deck as the drone , and never more than 200 feet away with direct line of sight . No GPS whilst flying inside the hull so drone in ATTI mode . I selected this day in particular as there was practically no wind which meant minimal drift while in ATTI mode . Biggest issue was if I landed in the ship , I could not take off as a compass calibration was required due to all the steel , which meant leaving the ship drone in hand to the shore , calibrating the compass and flying back in .