The Ship Model Forum

Hey Mick, A little late to answer, but after lightening up the photo, you see that there is only one rudder. The other 2 items are posts to help stabilize the ship in drydock.

Regards,
Darren

_________________
Darren (Admiral Hawk)
In the not so tropical climate of the Great White North.

I was browsing through my inbox today for something completely unrelated when I came across a series of emails that Neptune sent to several of us 13 months ago containing Russian plans in .zip files for Peter the Great. If interested, you can message Neptune and he can probably send them to you, or he can give permission to me to resend them.

These plans are similar to the one Bob posted earlier, showing the "intake scoops".

_________________
De quoi s'agit-il?

..

If Trumpeter used the same plans that I mentioned above, it would not be surprising that they would put that in.

_________________
De quoi s'agit-il?

Bob I was interested in what you showed here and will be interesting to find out which ship has it or not.


Velikiy in Drydock or is it Velikiy?

_________________
Building
1/72 Admiral Kuznetsov
1/72 Frunze Russian Battle cruiser
1/72 Steregushchy-class corvette

Mick
Tumut Australia

The scoops are for the steam plant, not the reactors. They are scoop injection for the main seawater system. Ships motion thru the water pushes the water thru the main/auxiliary condensers. Typical of surface ship propulsion plants and some soviet submarines. At low speeds, they use a smaller pump to circulate the water until ships speed can provide required flow.

Thanks for that bit of info - however, do you know if the Kirovs indeed had them or just that if they did have them, that's what they would be for?

_________________
De quoi s'agit-il?

If Kirov had them that is what they are for. I've not seen one in drydock and cannot say much more than that.

Here's some nice video footage of Peter the Great.

http://news.bbc.co.uk/1/hi/7628899.stm

Check out those Kashtans.

_________________
Give me a ping, Vasily. One ping only.

Wish me luck. It has been 35 years since I have built a model. I chose the Moskva by Trumpeter. Also picked up the Photo Etched set from White Ensign Models. Have collected many photos of this cruiser and have found many more on this site. Hmmmm. The decals seem to lacking. Is there an after market set I could pick up? Any tips will be greatly appreciated.

..

Hmm, I wonder what kind of sensor suite could be in those pods. It might be reasoned to remember, that the Sovremenny were slated for Amphibious Operations Support - they're a NSFS platform and surface combatant. Udaloy by comparison is an ASW asset, and vicariously so is the Kirov, with her primary armament. One could reason it's some form or sensor suite, related to ASW, and thus its presence on the Udaloy? Just a stab in the dark.

_________________
Die Panzerschiffe - Putting the Heavy in Heavy Cruiser since 1940.

It's not Overkill, it's Insurance.

If you think my plastic is crazy, check out my Line Art!
http://s37.photobucket.com/albums/e58/S ... %20Images/

The ones in that Udaloy may have a fuller teardrop pod shape, rather than the crescent blades that are on the Kirov kit - it's rather hard to tell.

If in the shape of crescent blades as in the kit, it might serve similarly to the winglets on aircraft, improving waterflow in that area and increasing efficiency? A far fetched idea, I suppose, but it's not like we have anything better.

_________________
De quoi s'agit-il?

..

..

Looking a the location of the fins directly outboard the screws, would it be possible that they channel water past the top arc of the screw to maintain pressure and minimize cavitation thereby increasing efficiency? Think partial ducted screw. The Soviet"s are/were very innovative with hydrodynamics. If it worked, they kept it. If it didn't, it would then have been removed during drydocking.

As far as I know Slava too has such a variable Depth Sonar. Practically they put a crane outside to recover the thing, however at one point the fish comes just below the ship by pulling it in, and during that phase I think the hollow section helps by either channeling the water or just by slowly scraping the fish to the middle of the stern where the crane can catch it. As for the boats, I'm not sure about that, I'll check on it too. I also have pics of Ropucha's who have shrouded props, but the props are also brought up in hal circular tunnels in the hull (obviously to reduce the draught) yet again tunneling stuff in the hulls... They seemed to have liked such things

As for the extensions on Udaloy, check again my (now updated) topic on that ship. You'll see the shape of these extensions on an Udaloy. Practically it has big bulbs on the outside and much smaller ones on the inside. In between there is a ridge connecting the bulbs and, as speculated here, creating a half duct on the upper side of the prop. The reason for the smaller bulb on the inside seems to be the need for steering.
One rudder and two props is already a disaster for steering a ship, as the rudder only comes in the slipstream of the prop when it has already a considerable degree off centre. When you have two rudders, one straight behind the prop, it's immediately in the slipstream and hence a small deviation from the rudder will already create some steering force. (less rudder angle, more speed).
So practically I think by using these bulbs they either just improve the propulsion efficiency for the props, reducing noise by reducing the cavitation, or they improve propulsion and steering. The fact that on later Udaloys the feature can still be seen, might, as SSN suggests, mean that it's an effective solution...
(another small note on this, the bulbs might have had, as a main purpose, improvement of propulsion and reduction of noise, while possibly the smaller bulb is only there to MAINTAIN steering rather than really improve it. Possibly steering got worse when they used a big bulb on each side and hence reduction of the inner bulb might have brought them back to normal steering capabilities).

_________________
The merchant shipyard

Hi guy,

Happy 2010...Carry on modeling!! Back to business, I found a photo and don't know what class of ship belongs to?? It show a Ka27 inside the hanger bay... so it must be a russian warship, but which class should it be?? sure not Kirov Please can anyone tols me?? Thanks!

Tiny guy

I think it would be an Udaloy, possibly Chabanenko due to the two blue stripes - the slanted surface of the doors, the double-doors, the half-sunken hangar floor, and the stripes on the deck match.

_________________
De quoi s'agit-il?

Yes it is Chabanko, I'm building this hangar in my Tributs model. Nice picture, it'll help me too. It kind of confirms what I was assuming and building. Doesn't go all the way down and the elevator is quite short al together.

_________________
The merchant shipyard