- - Submarine's eye?
- - Seagoing eye
- - tubular optical device allowing a viewer to see objects which are not directly in the line of sight
- - Overseeing helper?
- - Optical instrument that provides a view of an otherwise obstructed field
- - Badly-designed piers deal with submarine viewer
- - Old submarine's observation device
- - Undersea overseer?
- - Pope cries out for sub's viewer
- - One sees what's up, in the main
- - it's used by observant underseamen
- - Submarine's viewer
- - Video live-streaming app owned by Twitter
- - Aid which helps you see pier and copse if blurred
- - Revise pro's piece that provides views with reflections
- - Optical instrument must be awfully precise when surgery's involved
- - View provider on a U-boat
- - Means of looking above and beyond
- - Sherman tank device
- - Tubular submarine device
- - Submarine's viewing instrument
- - Sub apparatus
- - View enhancer
- - Viewer on the Nautilus
- - View-finder for Rickover
- - Submarine instrument.
- - Optical instrument at sea.
- - Optical instrument with mirrors.
- - Nautilus adjunct.
- - Optical instrument used in trenches.
- - Sub viewer
- - Sub need
- - Submarine device
- - Sub feature
- - Optical instrument
- - pipe's core unusually found in a submarine
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