Why no periscope below 50 ft?

ollie1983 · 06-29-17, 08:35 AM

Surely they would raise the scope prior to reaching the right depth to ensure that they exposed only the minimum of mast?

At what depth can the scope be used safely? I assumed the thing was proofed for the same submerged depth as the sub itself, or it is held inside a part of the sail which is pressure proofed externally?

Or for that matter what about the crew compartment on top of the sail you see them stood when surfaced? Does this close up or is it too sealed by doors etc?

06-29-17, 08:35 AM	#3
ollie1983 Sailor man Join Date: Jun 2017 Posts: 45 Downloads: 5 Uploads: 0	Surely they would raise the scope prior to reaching the right depth to ensure that they exposed only the minimum of mast? At what depth can the scope be used safely? I assumed the thing was proofed for the same submerged depth as the sub itself, or it is held inside a part of the sail which is pressure proofed externally? Or for that matter what about the crew compartment on top of the sail you see them stood when surfaced? Does this close up or is it too sealed by doors etc?