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Could someone out there PLEASE tell me why WWII subs generally had two periscopes? Back-up? Different optics? A great many thanx.
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Some US subs had 3
Some US subs had 3 periscopes. Generally one was the search scope, and one was the attack scope. The attack scope was fitted in a smaller diameter tube to minimize its wake. The search scope usually had a larger field of view for a given range than the attack scope. Here's a periscope manual. -
Attack and Nav Scopes.. Nav
Attack and Nav Scopes.. Nav scope had higher definition and angle for star shooting etc. Some Boats had a 3rd scope for photo recon etc.Comment
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Guys, which boats had third
Guys, which boats had third scopes? This is new to me. Were they boats attached to SpyRon?Warm regards,
Paul Crozier
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