MovieChat Forums > U-571 (2000) Discussion > Replacing the Deck Gun.

Replacing the Deck Gun.


Seeing as though the deck gun is now obsolete on submarines why don't they fit them with a battery of RIM-7 Sea Sparrows? That could fire at helos (that are conducting ASW warfare) or other fixed wing aircraft at periscope depth or a little deeper?

EDIT: After asking this question I found that the German Navy is trying some form of a missile like this called IDAS (Interactive Defence and Attack System for Submarines) I wonder if the US Navy has experimented with this?

http://en.wikipedia.org/wiki/IDAS_%28missile%29



Who are we, detective? We straight nightmares. We the walking, talking exigent circumstances.

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The IDAS is a fiber-optically guided missle. Cool concept but in general it still has 2 major problems. Number one you have to be at a shallow depth to fire it. That in itself opens the sub up to many problems. Number 2 the sub has to have a way to know the helo(and helos are all it will be targetting) is there. For that to happen they will need to at least peak with one of their masts or periscopes.

The German Navy and its operational needs are fairly limited to littoral, aka shallow water, operations. I can see the possibility, though not a definite one, for the need to be able to counter asw air threats in a littoral environment. Outside of this theater, the norm will be to go deep and sneak the hell out of dodge. But in limited engagements in the shallows this may be an option. With a Diesel Sub and a need to snorkel, this may be a safety precaution worth spending on but, outside of that I don't see it happening.

Modern Littoral operating environments however are what the US Navy will face. Multiple platforms on a not so limited scale. The Sea Sparrow and its new incarnation the Evolved Sea Sparrow Missle are radar guided. Meaning the firing platform must use a high energy fire control radar to guide the missle to its target. That is an arrangement that simply wont work for a submarine. I dont believe a optically guided SAM would suit the needs for the US Navy. An autonomous, fire and forget weapon may be something the US would look at but, I believe submariners would prefer to hide. The Virginia Class is particularly suited to hiding in Littoral areas.

Im also not fully sold on guiding a missle optically onto a moving aircraft, even one that is just hovering. This would undoubtedly take up a space in a Torpedo room or a cell in a VLS, removing another offensive weapon from the loadout.

Warmonger by day, poet by night!

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Drones are the future. Just like Churchill said. They will inherit the earth.
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eurosceptic

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The UK Royal Navy between the world wars had a series of big gun submarines, some that had up to 10" guns on them. All of them had some serious issues and were abandoned.

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If a US sub even SUSPECTS there is a helo or other fixed wing ASW asset overhead they will not go anywhere near the surface.

Why?
A picture is worth a 1000 words....
http://upload.wikimedia.org/wikipedia/commons/5/59/USS_Chicago_(SSN_72 1)_at_periscope_depth_off_Malaysia.jpg

I joined the Navy to see the world, only to discover the world is 2/3 water!

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