expensive, development discontinued. ANT 23.2 Polarstern Nov 2005 - Dec 2005 Use of same cameras facing strictly forward, but mounted under roof of Polarstern's crow's nest and passively gimballed against [...] impeding automatic whale detections. Polarstern PS115/1 Aug - Sep 2018 ~60 TByte data collected Ship based operation of FIRST-Navy infrared imager on RV Polarstern for marine mammal mitigation during seismic [...] occasion, ship's antennas cause frequent false positives. Polarstern MOSAiC Ship based operation of FIRST-Navy infrared imager on RV Polarstern for polar bear surveillance. PS128 765 h operational FIRST-Navy