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Hood
Post subject: Re: A little different frigate!Posted: April 23rd, 2023, 8:59 am
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Its coming together nicely.

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heuhen
Post subject: Re: A little different frigate!Posted: April 29th, 2023, 2:48 am
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What I think this idea/concept could look like.

At a glance:
Power:
- two LM2500, at minimum 25.000hp each, getting air from air intake in the main superstructure (There are more air intake on the port side of the main superstructure) and supplemented with extra from the aft funnel.
- Top speed should be at minimum 27 knots, but ideal it should be at US/NATO fleet speed, due to Norway doctrine of escorting allied supply ships and other warship into Norway during war, but also due to that they also occasionaly escort US carrier
- Range should be around the same as current class

Armament:
- Two 76mm guns, instead of 56mm. Since that is the main armament in the Norwegian Navy. (But I wouldn't be surprised if they would go for 56 or 40mm)
- Forward MK41 VLS will most likely be replaced by the new VLS USA is developing for the Future destroyers. In a combination of new VLS and MK48 or Mk41 SDLS basic for ESSM, while the new VLS take care of larger missiles.
- Increased the amount of NSM it carry, compared to FN class

Aviation:
- Hangar would stretch from forward part of the lift to aft of Helicopter landing pad "1 port". on a deck lower and aft, there is space for one USV or two, with possible space for Captas or similar
- Flight deck should be capable to operate 2 medium helicopters
- are next to the lift on the flight deck, should be a stand-by location for helicopter with multiple anchorage points for a helicopter.
- Flight deck should be FLEX-capable and be able to store various of "mission" containers
- Hangar should have space for: 2 medium helicopters. 5-10 UAV in various configuration (some dismantled and some ready for flight)
- forward flight deck, have 3 pads for UAV and a catapult for small/medium UAV (landing is possible on flight deck but not marked on drawing)

Crew:
- Bellow aft helicopter pad, is one of the largest crew berthing with space (depending on layout) for 60 to 90 men/woman in 6 man cabins. Rest of the berthing places is spread around the ships in either 4 man or 6 man cabins.

Other stuff:
- The overall internal Volum is probably increased around 20%+ compared to FN class.
- Radars is either Americans or European. (on drawing it is just generic radar panels)
- Main radar structure is of composite/grp

Note that weapons, electronics, radar, equipment on drawings are more or less generic, since it's unknown what will be used in 10-15 years into the future
[ img ]


This drawing bellow illustrate the size difference between the Fridtjof Nansen class frigates and the FFX frigate I have drawn.
- Grey illustrate the approx size of the dock and hall. The dock it 140 meter long, 24 meted wide and 37 meter tall at the lowest point.
--- It is around 8-10 meter taller under the steel roof.
--- Can be moved up higher the future if needed
--- The lowest point of the dock, can't be changed, due to a building on top of the mountain. (not Impossible if the "stupid" amount of money is there)
- The hall is 150 meter long
--- can be enlarged by moving the dock gate, more out into the sea.
--- it is also possible to lengthen it into the mountain, but the roof height is limited (see previous comment)
--- The is space to increase the width of the dock and hall (If the Aviation frigate version with a sponson on port side was to be chosen) (was done with the previous frigate program, since it was run on a separate budget then the frigate program)

The drawing is right at the limit, off what is possible for the dock ar Haakonsvern. But I belive future Navy ships in most countries will become bigger but with smaller crew, mainly due to the electronics needed, but the armament on those ships would most likely not increase by much,only its capability.
[ img ]


Note from the picture bellow:
The dock have build in, extra hole in the dock floor, to give some extra work space for: Sonar, Propellers, rudders, and so that the Azimuth truster can be lowered fully and be pulled out.
The yellow arms, are designed on paper to withstand pressure if something unwanted was to happen, like for example an close by explosion that manage to get the ship to shift in position (What I am informed). As I was informed: "it is not to make sure the ship survive, an explosion is an explosion, but make it easier for us to pull out the ship or what is left of it. Then having a massive and dangerous clean up operation for years inside the dock"

The Dock at Haakonsvern:
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Hood
Post subject: Re: A little different frigate!Posted: April 29th, 2023, 8:47 am
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Looks good, it turned out very nicely and its certainly an interesting concept.

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adenandy
Post subject: Re: A little different frigate!Posted: May 5th, 2023, 12:03 pm
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Excellent work Heuhen!

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heuhen
Post subject: Re: A little different frigate!Posted: November 5th, 2023, 12:37 am
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A continuation of my "little" frigats with a bit different taste.

It all started with the version "A1" some are on the first page. This version of the "A1" is "different"... so I call it version "B1".

This drawing is max 147 meter long and under 21 meter wide!

What are seen in the drawing:
- Large helicopter hangar/flex deck
- Large RORO-type deck for USV.
- enlarged helicopter deck
- Armament is split and spread more out, to prevent "one hit, knocks all out" (A little resemblance to the Danish frigates), even on the center weapon deck, VLS is splitted to S and P to prevent a mishap in one damage the other one!
- twin jet, twin diesel. If not impossible, fleet speed would be ideal as absolute max/min.

Questions I have before the drawings!:
1. Radars, what would be a good fit, "simpleish" radar, or radars like SPY-series, etc.
2. Mk.41 VLS or Mk.57 VLS?
3. Shorten the hull to 139 meter as the previous drawing. By reducing the length og helicopter hangar/flex deck, or changing layout of center weapon deck. Or remove center weapon deck and go for a more traditional bow weapon deck

[ img ]


Question after the drawings:
a. any slaughter?


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sebu
Post subject: Re: A little different frigate!Posted: November 7th, 2023, 3:14 pm
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Well, Finns are building a vessel of 4300tons, 117x16x5m with ice class 1A; claiming it is a corvette... :) Your design might be between frigate/destroyer...? Our friends Danes made good work with Absalon; quite same measurememts as your design and they call it frigate.
As you know, I've always loved your designs, but aren't they a bit... how could I say... chubby? You like chubby, don't you? 8-)

We have mix of Saab Sea Giraffe 4A FF AESA 3D radar and Saab Sea Giraffe 1X short-range 3D radar in future Pohjanmaa class + Saab Ceros 200 x2. But it is only for Baltic conditions. The VLS solution might be purely weight management, I quess? As for lenght; steel is cheap. How it is affect on hydrodynamics of this; I really don't know... But it looks good, so go on!


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heuhen
Post subject: Re: A little different frigate!Posted: November 14th, 2023, 3:46 pm
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3 Variants of the previous design, in 3 sizes, where one of them have an theoretical fit.

The variant's are: 145m, 153 and a 139 meter frigates. Where the 145m frigate give you best volume for future upgrade and thus also possible for best range, and 139m give you best bang for bucks. It all come down to, do you want the volume, or do you not need that extra volume. Power-plant would be the same over all 3 plattform, but the 145m will have space for more, if future system/weapons need more energy.

What main radar that is used, can be changed. there is space for everything from a single powerful radar to a 2 radar setup (for and aft).
Theoretically it is possible to move the center weapon deck, aft of the aft funnel, and more the aft funnel into the forward funnel. Thus make one large/long funnel, only divided by ventilation.

[ img ]


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heuhen
Post subject: Re: A little different frigate!Posted: November 15th, 2023, 12:20 am
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Smallest variant of the drawing above. For simplicity I call it 139M.

Some notes:
- 138.9 meter long
- 20,72 meter beam
- 6,4 meter draft (hull); 9,3 meter draft (sonar)
- Currently drawing is drawn for 2 LM2500 (in a +- 25.000hp mode) and 4 large diesel-generators and several small generators spread around the ship. (I am thinking the ship could be a Hybrid!?)
- 6500-8000 tons (compared to similar size frigates)
- Drawing show max weapon package: 1 x 76mm; 4 x 40mm; 2 x 35 cell Mk41 VLS; 2 x twin torpedo tubes; 4 x quad NSM launcher; Nulka; "more to come"

- I have used SPY-4 as yard stick for the radar facets
- Radars can be either in the SPY-family (with adjustment to the tower, or German Atlas (with adjustment to the tower)
- With simple modification, the main radar tower can be changed to a multiple faced tower*
- bellow deck flex deck, with interchangeably modules: RHIB, VDS, supply, USV, transport, hospital.
- Smaller hangar facility then the two larger variant's but still space for Medium helicopter and UAV's

Feel free to come with suggestion. The only question I have for now; "shall I go back to a "Fridtjof Nansen class" type of radar tower, but larger for more space for integrated faces."

[ img ]


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heuhen
Post subject: Re: A little different frigate!Posted: November 16th, 2023, 3:54 pm
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Updated version of previous drawing, but now with 4 phased plates.

To do:
- fixing some small details.
- adding some small details.
- fixing the placements of rafts.
- adding 12.7mm, stations.

What is currently on the drawing:
- 4 phased plats in similar size of SPY-4 plates.
- 1 x 127 mm cannon.
- 4 x 40 mm cannons (playing with the idea of having a 2 x 40mm and 2 CIWS, in a cross formation! Would be weird) (second tough, would just be better to upgrade 40mm with it's own radar/illuminator, have seen some proposed guns with that solution.)
- 3 x 35 cell VLS Mk41.
- 4 x quad NSM.
- 2 x twin Torpedo launcher.
- 2 x twin launcher for anti torpedo weapons.
- The space between the aft 40mm guns. Would have been hilarious to place a NASAM launcher there!
- large (twin) hatch aft for RHIB/USV/UUV, The idea between a twin hatch, is for the possibility to pull in an container or more, for increased capability.
- marked out hatch for two types of towed VDS/Sonar.

[ img ]


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Hood
Post subject: Re: A little different frigate!Posted: November 18th, 2023, 3:30 pm
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It's looking good!
The four-array version does seem easier on the eye for some reason.

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