Shipbucket

Here's one possible down-armed configuration. The single 20mm replaces the twin .50s on the helideck rear, the RAM is moved to the front and made wartime-only, and a crane is added where the 20mm gun was.


Edit: crane colour fixed

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Worklist:
FFG Halifax Redraw

I believe SPQ-9B is sufficient, if not ideal, for all of your needs. I don't really like the 20mm right aft as currently arranged; if you're going to block the helo deck, you might as well block it with something a lot more useful.

the holland class OPV's, which are a bit larger, have an 76, an 30mm, and 2 .50's. basically, this arrangement. maybe that ship is a bit large for it's load, but it is something to keep in mind. it has 3 of the 4 weapons forward though.

keeping that in mind......
what about placing the crane on the current position (but an a bit larger one, maybe foldable, which can service the helideck and over the sides), the .50's at the side of it, and the 20 mm forward. in the wartime config, the 20 mm can be replaced by the RAM. you don't need an 'coastguard' 20mm if you are at war. otherwise, if you loose the OPV role, you might loose the crane for the RAM. that gives you 360 degrees coverage against AA.

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Drawings are credited with J.Scholtens
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I'd put a crane on each side and the 20mm on the raised bit in the middle. In wartime you'd replace it with a RAM launcher for all round AA cover.

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Source Materiel is always welcome.

What do you mean by "on each side"? You mean alongside the superstructure?

Edit: Here's a version following Ace's suggestions, but lacking Thiel's 360 AA coverage.



I couldn't find a larger crane that didn't end up looking too large...

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Worklist:
FFG Halifax Redraw

Yes.

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“Close” only counts with horseshoes, hand grenades, and tactical nuclear weapons.
That which does not kill me has made a grave tactical error

Worklist

Source Materiel is always welcome.

Is this what you meant?

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Worklist:
FFG Halifax Redraw

For the ship's radar I would recommend the Saab Sea Giraffe or Thales Variant.

we have part-sheets with many cranes on, but I'm not at home so...

I honestly prefer the crane-rear version, and I'll certainly look for a bigger crane on the sheets (or maybe another ship if none fit); but I'm not at home for the next week. Which means not having the .pdn file whoch means no layers, which means annoying editing. I might however start the larger ship. If I wanted a pseudo-frigate with ESSM ans a hangar, what length would I look at?

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Worklist:
FFG Halifax Redraw