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Shipright
Post subject: Re: Prowler Class OPVPosted: March 12th, 2013, 1:49 pm
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I am not a fan of that severe angle on the aft face of the exhaust stack. I woul djust make it vertical or near vertical to the main deck.

I also second the VLS suggestion. The firing ark for that rotating NSSN mount is severly restricted due to the exhausts. I am not sure constantly being bathed in exhaust would be good for the mount either. How much beam are we estimating? Those things might be right up it!


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acelanceloet
Post subject: Re: Prowler Class OPVPosted: March 12th, 2013, 3:42 pm
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[ img ]
the source for those stacks, I suppose. or at least, proof it works.
that said, I wonder why the NSSM is even on board, and she will need an director (I suggest an STIR 180 if you keep it on board) but placement of this, best after the mount, would need some work to get it not blocked by the funnels and itself not blocking the SMILE radar of the I-Mast. even with Mk 48, this problem exists.

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Fox
Post subject: Re: Prowler Class OPVPosted: March 12th, 2013, 8:07 pm
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[ img ]

did I just fully block the SMILE or?
also cut the Mk48 in half so it would have a better emplacement.

Cargo crane has been moved to the other side.

also, what does SNNM stand for?
I figured it means something around Air-Defense

The reason why it has SNNM is because I believe it is Air-Defense.

now the OPV is a low priority fighter, mainly used against drugs operations.

now my AU (Slovada) is located on an island, so drug-traffic will be by Sea or Air - so will be terrorism.
I want to use my OPV as an last defense, so they might be needing bigger engines and when an enemy aircraft reaches land, damage will already be done so besides the standard Air-defense frigates I also want an more versatile OPV that can take on if needed - low priority fighters and or commercial airliners.
and the Marlin just isn't going to cut it.

my grammar leaves a bit to be wished for, but I hope I explained a bit of my motives.


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heuhen
Post subject: Re: Prowler Class OPVPosted: March 12th, 2013, 8:39 pm
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Quote:
Mk48
correct versions
[ img ]

from here:
http://www.shipbucket.com/forums/viewto ... =16&t=2755
Quote:
also, what does SNNM stand for?
I figured it means something around Air-Defense

The reason why it has SNNM is because I believe it is Air-Defense.
You mean NSSM and ESSM

NSSM = Nato (Naval) Sea Sparrow missile
ESSM = Evolved Sea Sparrow missile

Quote:
now the OPV is a low priority fighter, mainly used against drugs operations.
Just add an High speed RHIB and you have all you need for that together with the helicopter.
Quote:
now my AU (Slovada) is located on an island, so drug-traffic will be by Sea or Air - so will be terrorism.
I want to use my OPV as an last defense, so they might be needing bigger engines and when an enemy aircraft reaches land, damage will already be done so besides the standard Air-defense frigates I also want an more versatile OPV that can take on if needed - low priority fighters and or commercial airliners.
and the Marlin just isn't going to cut it.
I you can find space for it you can add an small gas turbine with an generator. you can also let you engine use generator to, that will give you and Diesel electirc drive with Gas/jet engine packed in there. My idea is Two gigantic Generators mounted in to a big gearbox where both Diesel engine and the single jet engine is also mounted in to, this can give you an fuel economy advantage with that you choose how many engine you want to run and how many generators you want to use. Disadvantage is that if the gearbox is damaged.... but then you can add in an direct drive from the Diesel engine to the shaft as and backup systems.


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Fox
Post subject: Re: Prowler Class OPVPosted: March 12th, 2013, 9:12 pm
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So I would need the Mod1?
to be placed on the side of the vessel?

also found out that the APAR is also an Illumination radar capable of guiding 32 missiles at the same time, do I really need the STIR 180?
(APAR is intergrated into the I-Mast)

Joker, is that capable on this vessel, and if not what do you think the cruise speed and max speed would be for this vessel, I have really no clue about the technical performance of vessels

Also I can't thank you guys enough, support is overwhelming, and I really feel like I'm learning from this! :D


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heuhen
Post subject: Re: Prowler Class OPVPosted: March 12th, 2013, 9:59 pm
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So I would need the Mod1?
to be placed on the side of the vessel?
Basically yes.
Quote:
also found out that the APAR is also an Illumination radar capable of guiding 32 missiles at the same time, do I really need the STIR 180?
(APAR is intergrated into the I-Mast)
I-Mast and APAR is two different radars. Ace.. have probably most knowledge about I-Mast and APAR radars and so one, and if he recommend the STIR 180 than you going to need it. Most likely because the I-Mast can't guide the NSSM Missiles.

http://dl.dropbox.com/u/63276563/dutch% ... et%202.png
Quote:
Joker, is that capable on this vessel, and if not what do you think the cruise speed and max speed would be for this vessel, I have really no clue about the technical performance of vessels
A vessel of thise type use to have a cruise speed around 23-25 knots with a cruise speed of 13-15 knots depends on engine and so one.
Quote:
Also I can't thank you guys enough, support is overwhelming, and I really feel like I'm learning from this! :D
That's what we are here for 8-)


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erik_t
Post subject: Re: Prowler Class OPVPosted: March 13th, 2013, 3:26 am
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A few thoughts:
  • For best functionality, the bow thrusters should be AT the bow. M = r x F, after all.
  • The armament seems exceedingly heavy. Sea Sparrow, 120mm gun, multiple CIWS... how is this not a frigate? Aside from the single helo and lack of sonar, this is in every way more effective than a modern Perry.
  • The long HF comms antennas should be vertical, as this is optimal for skywave propagation. More separation between them would be optimal if you wish to have four. It would be reasonable to only have two, one on each beam.
  • You don't need a rotating surface search radar -- this functionality is already present in the I-mast.
  • I have no idea why you have two separate stbd-side green navigation lights. I also think they're supposed to be forward of the white masthead light (and therefore should be on the sides of your bridge), but I'm not totally sure.
  • If you separated your STIRs from the mast further, they would have much more effective bearing of coverage. Right now they're nearly limited to +-90deg. You might as well put the forward one atop the bridge, and the aft one right at the break in the deck line. The satcom dome doesn't need to be able to look straight forward, anyway.


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acelanceloet
Post subject: Re: Prowler Class OPVPosted: March 13th, 2013, 8:01 am
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@ Erik, the I-mast has no nav radar function, so you need separate nav radars.
on the rest I agree (although the holland class has it's HF antenna's angled like that as well, possibly to have them not interfere with the I-mast)

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Fox
Post subject: Re: Prowler Class OPVPosted: March 13th, 2013, 2:06 pm
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Quote:
[*]For best functionality, the bow thrusters should be AT the bow. M = r x F, after all.
Could you explain this further?
Quote:
[*]The armament seems exceedingly heavy. Sea Sparrow, 120mm gun, multiple CIWS... how is this not a frigate? Aside from the single helo and lack of sonar, this is in every way more effective than a modern Perry.
OPV Holland class - Remotely controlled: 1 x 76 mm gun, 1 x 20-30 mm gun, 2 (+2) machine-guns - I am going to change the 120mm gun it's an placeholder
second CIWS gun is there because of the fact that my front CIWS gun is not capable of looking to the aft.
Quote:
[*]The long HF comms antennas should be vertical, as this is optimal for skywave propagation. More separation between them would be optimal if you wish to have four. It would be reasonable to only have two, one on each beam.
Changing them to 2
Quote:
[*]You don't need a rotating surface search radar -- this functionality is already present in the I-mast.
Acelanceloet posted on this matter
Quote:
[*]I have no idea why you have two separate starboard-side green navigation lights. I also think they're supposed to be forward of the white masthead light (and therefore should be on the sides of your bridge), but I'm not totally sure.
not details are finished yet, and more often I post to get opinions, however

this is for an motor vessel larger vessel than 50m
[ img ]

on the matter of 2 Nav lights.

http://www.shipbucket.com/images.php?di ... INCIEN.png

I hope this is what you meant
Quote:
[*]If you separated your STIRs from the mast further, they would have much more effective bearing of coverage. Right now they're nearly limited to +-90deg. You might as well put the forward one atop the bridge, and the aft one right at the break in the deck line. The satcom dome doesn't need to be able to look straight forward, anyway.
Thank you, you confirmed my feelings just wanted to be sure!


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heuhen
Post subject: Re: Prowler Class OPVPosted: March 13th, 2013, 2:47 pm
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Fox wrote:
Quote:
[*]For best functionality, the bow thrusters should be AT the bow. M = r x F, after all.
Could you explain this further?
He mean that you need to move the bow thruster more forward, since it is there to move the bow and not the entire ship. place it about 2-3 meter from the bow.

thise one have an ice strengthen bow but it give you the idea.
[ img ]


Another possibility is to have an pod that can be lifted up ito the hull like this one:
[ img ]


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