Domes, Cones & Cylinder shaped sensors

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Little h
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Re: Domes, Cones & Cylinder shaped sensors

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Type 23 Duke Class Frigates (continued)

The Type 23 Duke Class Frigates are fitted out with various combinations of the sensor types/shapes described above and can be mounted on either or both mast structures, also on the superstructure.

In this post the feature is a Cylinder/Canister shaped Dome that can be seen projecting stbd/aft from the foremast. When installed it is mounted atop/over a spindle at the end of a supporting arm. The supporting arm projects at an angle towards the stbd quarter quadrant.

For ease of identification the Cylinder/Canister shaped Dome is within a dark red outline.

1. Westminster F237; note that in both images, the dome appears to have a small stub attachment projecting upwards at the centre of the convex top surface. In the second attachment the dome has a 'two tone' appearance.
1 F237 HMS Westminster 012 Photos © U.S. Navy (by Mass Communication Specialist Seaman Kari R. Bergman) seaforces.org.jpg
1 hms westminster be861832773905134b559d5c5891c34fo FORO BASE NAVAL.jpg



2. Iron Duke F234; note that the second image shows clearly the installation of the dome when compared with Sutherland F81 that is without.
1 hms-iron-duke_8949628_1301455 fleetmon 10 Feb 2016.jpg
1 HMS Iron Duke & Sutherland Trondheim Feb-Mar 2016 Screenshot mod.uk.jpg


3. Westminster F237; seen at Gibraltar without the installation; note the supporting arm and spindle.
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Little h
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Re: Domes, Cones & Cylinder shaped sensors

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HMS Protector A173

When HMS Protector sailed from Portsmouth in 2013 she was still owned by GC Rieber and leased by the Royal Navy, since then the ship has been purchased by the Navy and her base port changed from Portsmouth to Plymouth which means this is the first time Protector has been to her new port other than for training.

Source; an article in the Royal Navy News MOD.UK website, titled HMS Protector is home from Antarctica 12/05/2015

An Inverted UHF Broadband bi-conical dipole complete with counter-poise skirt in the styLe of the type AJE(5), or later AJS/UK/SRA 102 series of aerials/antenna, giving the appearance of a Jury-Rig - however it is not so, because this rather 'Heath Robinson' configuration (if I may make so bold) ...seems to have endured long before the time of her lransfer into RN ownership (possibly the start of her lease).


z DmASKfuWwAEFfmZ (3) - Copy.jpg


Attachment derived from a photograph posted today in the NavyLookout twitter account of Save The Royal Navy .org
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Little h
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Re: Domes, Cones & Cylinder shaped sensors

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HMS Dauntless (D33) - Shaman CESM Antenna.


In the thread opening post (passages copied below), I included several attachments in support of observations made relating to the installation of the first 'Shaman' antenna mounted on HMS Defender (D36). Also included were passages from various articles associated with the images.

This post will show the similar combination of antenna observed having been installed on Dauntless (D33) whilst in dry dock during a period of refit and upgrade.


------------------------------
Little h wrote: Fri Aug 17, 2018 8:21 pm Type 45 Daring Class Destroyers .............. the addition of the tapered, slotted omni-directional D/F Array fitted around the Comms mainmast as part of the 'Shaman' CESM antenna/array configuration on HMS Defender (D36). Neither should we forget the re-emergence of deck-edge antenna/arrays along the ship sides port and starboard.

In this short series of posts under the above thread title, I will include a number of images showing some of the variations observed in various photographs and/or articles.
----------------

The following excerpt is taken from here; under an article titled 'HMS Defender returns to the fleet fitted for intelligence gathering' dated August 7, 2018.

Shaman

HMS Defender is now the described as “the most capable Type 45 in the Fleet.” The main upgrade in capability was the installation of the Shaman communications electronic support measures (CESM) fit to used to gather signals intelligence (SIGINT). The AS-4692 VHF/UHF tapered slotted array direction finding/acquisition array is fitted on the upper part of the pole mast. The AS-4293A VHF/UHF omnidirectional acquisition arrays are fitted half way up the foremast and on the hangar roof. Small HF antennas can be seen mounted on the deck edge amidships, two each port and starboard, just above the retractable companionway ladders.

Shaman is based on the US Navy’s AN/SSQ-130(V) Ship Signal Exploitation Equipment (SSEE) Increment F cryptologic exploitation system. 7 sets have been purchased from the United States at a cost of around $90M and will eventually equip all 6 Type 45s, plus a set for shore-based training. Also included are spares, training packages and support equipment. US personnel were sent to Portsmouth to assist in the initial stages of this sensitive project.

In simple terms, CESM allow the passive interception of adversaries transmissions across a broad part of the electromagnetic spectrum. The system can analyse, geolocate and in some cases may be able to decode encrypted communications. In a naval context, a warship may loiter off a coastline and be able to record signals from mobile phones and military and government radio communications. At sea, intercepts may provide critical detail and forewarning about the actions of adversary’s naval units. It is probable that the communications and capabilities of even our closest allies are also monitored to some extent.

The precise details of this sensitive subject are obviously highly classified but the exploitation of the electromagnetic spectrum by both states and non-state actors is a rapidly evolving art. Continued investment in a broad range of intelligence collection and analysis assets are critical to UK defence. Intelligence gathered at sea may provide part of the picture and be passed to military intelligence agencies and GCHQ that can assess capability and intent by potentially hostile actors.


Further articles were carried here titled:-
Sea Platforms
First UK Type 45 at sea with Shaman CESM fit
Richard Scott, London - Jane's Navy International
05 June 2018
______________________


Defender (D36); showing some of her Shaman CESM antenna (included for comparison purposes)
2 HMS Defender 31337172268_6776a68d90_o Flickr HMS Defender D36 (5) @ The Solent 08-10-18 A Christy...jpg

Note - the inclusion of captions relating to:-
- the suspected 4th (aft) deck edge antenna on ship side below the flight deck (also mentioned in the thread opening post)
- the addition of two suspected deck edge antenna on the transom


Dauntless (D33); showing some of her Shaman CESM antenna visible from off the stbd qtr - appears similar/identical to the installation on Defender (D36)
2 HMS Dauntless Photo S. Wenham upgrade Dx5-IBmXQAAoTqf.jpg large.. (2).jpg


Attributions; attachments derived from original images see:-
- Defender (D36) - Flickr HMS Defender D36 (5) @ The Solent 08-10-18 A Christy
- Dauntless (D33) - NavyLookout on Twitter Photo by S. Wenham upgrade Dx5-IBmXQAAoTqf.jpg large.

This Wiki image of Defender (D36) shows the port side and stern before the Shaman CESM antenna installation. Note that the two suspected deck edge antenna on the transom inboard of the deck landing lights (port & stbd).
wiki HMS_Defender_(D36)_hamburg_stern wiki.jpg
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ivorthediver
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Re: Domes, Cones & Cylinder shaped sensors

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Well spotted Harry , will follow this now I'm aware of it thanks, and know what it is in basic terms :oops:
"What Ever Floats your Boat"
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Re: Domes, Cones & Cylinder shaped sensors

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Zumwalt Class DDG - In the case of the never to be seen 'cone shaped sensor'

Take a look at the following short excerpt; especially the passage I have bolded within the last paragraph:-

-----------------------------

Throughout, Zumwalt features systems that open or retract or lift or lower, many of them classified or restricted. A towed array system and towed torpedo countermeasures system will be installed aft. Side doors to handle underway replenishment will open to extend handling gear, special radars will rise on retractable masts.

Except for the flight deck, sailors will rarely appear topside when the ship is underway. Foredeck lifelines will be retracted when the ship is at sea. Embarkation and mooring stations are hidden behind doors in the hull.

One concession to conventionality has been to install a small mast at the forward end of the superstructure to carry the national ensign, a change made more convenient when a small conical structure carrying sensors was deleted.

Source; an article in the Military Times titled:-
Meet the Zumwalt: The Navy's stealth destroyer will go to sea next spring
By: Christopher P. Cavas   September 28, 2014

-----------------------------

One wonders what it was that could so readily be dispensed with, in favour to an ensign carrying mast?

Zumwalt DDG 1000 could be seen in images with a deck house that looked somewhat cheesy - and subsequently rather tlumpy. Recently she has been caught in images displaying a number of lumps atop the deck house ... but with no sign of that 'conical structure carrying sensors'

-----------------------------


Navy's Revamped Stealth Destroyer Looks Less Stealthy As It Leaves San Diego For Trials
Zumwalt class destroyers consistently shed capabilities as costs ballooned. Now the Navy is bolting components directly to their stealthy deckhouses. By Tyler Rogoway September 12, 2018

​​​​USS Zumwalt (DDG-1000) is a controversial ship, to say the least. After much fanfare among the mainstream press, the truth about the ship's watered-down design, tiny fleet size, useless deck guns, and the implications of these factors, among others, became much more clear. As we reported two years ago, in yet another cost-cutting move, the Navy decided to forego the ship's very stealth concept—which is the major reason the ships look the way they do, cost as much as they do, and have certain design tradeoffs for doing so—and bolt on communications systems and some sensors in a very unstealthy manner. These corner-cutting measures even included the addition of a rickety looking mast above the ship's deckhouse. Now we are getting our first glimpses of this disappointing configuration.


The Ensign staff;
161015-N-AT895-158.jpg


The lumps;
imagesvc.timeincapp.com dodrive.jpg
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Little h
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ivorthediver
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Re: Domes, Cones & Cylinder shaped sensors

Unread post by ivorthediver »

Will we be able to get a Haynes manual on this one Harry ;)
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Little h
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Re: Domes, Cones & Cylinder shaped sensors

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ivorthediver wrote: Thu Feb 07, 2019 5:40 pm Will we be able to get a Haynes manual on this one Harry ;)
Not seen one on the horizon yet.
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Re: Domes, Cones & Cylinder shaped sensors

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Well how surprising .....the publishers managed to have our front line Destroyers printed in America yet we can't get theirs .....hmmm there is a morale there some where me thinks ;)
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Re: Domes, Cones & Cylinder shaped sensors

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HMS Dauntless (D33) - Shaman CESM Antenna.


Rob Hinton on Twitter
@TugmasterRob

A rather moist move for Dauntless today

___________________________________________________________

Getting tugged out!!
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Re: Domes, Cones & Cylinder shaped sensors

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Domes, Cones & Cylinder shaped sensors ... now we have Wedge shaped antenna

Further to the posts relating to the Beehive ESM/ECM antenna on USS Enterprise CVN-65 and their subsequent removal along with the SCANFAR AN/SPS-32 & AN/SPS-33 in the US Navy forum - whilst reading the history contained in Seaforces-online, I noticed a reference to AN/SLQ-17 equipment type; and never having encountered said reference I proceeded to investigate.

Screenshot (5366).png
Screenshot (5367).png

Sources; 1st & 2nd attachments; Seaforces-online


AN-SLQ-17 1978-01-01.jpg

Sources; DPLA Digital Public Library of America
&
U.S. National Archives Public Domain ArchiveNot developed or endorsed by NARA.

EW Technicians operate AN-SLQ-17.png

Source; U.S. National Archives Public Domain Archive Not developed or endorsed by NARA
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