Related by context. Frequent words. (Click for all words.) 55 portholes 53 eyepiece 53 porthole 50 turret 49 binoculars 49 infra red 48 submersible 48 gun turret 46 camera lens 45 infrared camera 45 keyhole 44 telescope 44 turrets 44 viewfinder 43 robotic 43 submarine 43 joystick 43 telescopic 43 prow 42 robot 42 ROV 42 lens 42 sniper rifle 41 camera 41 cannon 41 contraption 41 infrared 41 searchlights 41 magnifier 40 magnifying glass 40 binocular 40 antennae 39 propellers 39 peered 39 spherical 39 pinhole 39 infrared sensors 39 optic 39 tripod 39 pirate ship 39 magnifying glasses 38 aperture 38 rudder 38 radars 38 infrared cameras 38 peephole 38 gantry 38 crouching 38 prisms 38 menacingly 38 starboard side 38 Hubble Telescope 38 underwater 38 robotic arm 38 lunar module 38 submarines 38 sensor 37 zoom 37 airship 37 thermal imaging 37 radar 37 orb 37 swivel 37 miniature 37 flashlight 37 convex 37 gunner 37 blimp 37 nozzle 37 gangway 37 watchtower 37 outer space 37 battleship 37 sentry 37 antenna 37 bird's eye view 37 deck 37 USS Enterprise 37 spaceship 37 infrared sensor 37 telescopes 37 compass 37 altimeter 36 torpedoes 36 Millennium Falcon 36 swivels 36 mouse cursor 36 AUV 36 electron microscope 36 Geiger counter 36 searchlight 36 thruster 36 zoom lens 36 strobe light 36 gunboat 36 propeller 36 Binoculars 36 submersibles 36 magnification 36 joysticks 36 hovercraft