WWII - Air Defence Radars in Shetland - An Introduction

In the next year or so I hope to produce articles about each of the RAF radar sites constructed in Shetland during WWII. This short piece is meant to show where these units were located and to give a brief explanation  as to why they were built. At the start of WWII there were no operational air defence radars in Shetland. The famous Chain Home system, which performed an invaluable service in the Battle of Britain, did not reach these northern latitudes until later.  Chain Home(CH) eventually covered the whole of the UK coastline but at the start of the war the most northerly site was at Netherbutton in Orkney, where the equipment was designed to look to the south-east. Work on the Netherbutton installation began in May 1939 and the initial Advance CH station was handed over to the RAF the following month. The main purpose of this unit was to give early warning of possible air raids, originating in Germany or the Low Countries, against the Home Fleet in Scapa Flow; hence the orientation of the radar cover.

The Royal Navy had organised its own radar stations  for the Northern Isles. Six Coastal Defence U boat sites (CDU's) were built from the northern tip of mainland Scotland right up to the north end of the Shetland Isles - these were known as Admiralty Experimental Stations (AES) 1 to 6. Four of these stations were built in Shetland, the first (AES1) at Sumburgh Head, opened in Dec 1939. AES 2 & 3, both on Fair Isle, followed a few months later and AES 4 on Saxa Vord opened in Sep 1940. The main function of all  of these RN stations was the detection and tracking of submarine and surface contacts. In the early part of the war the data they obtained was passed though landlines to the Naval HQ. These stations were equipped with similar equipment to RAF Chain Home LOW (CHL) radar units and, although quite capable of detecting aircraft in their vicinity, this was not their primary role and, initially at least, the communications system was inadequate for passing information on airborne intruders rapidly to airfields or fighter aircraft. Furthermore; in the early days, Shetland lacked adequate fighter cover. For the first 9 months of the war the only aircraft fulfilling this role were 3 Gloster Gladiator biplanes (top speed around 250mph). Most of the German intruders in the area were Heinkel 111's with a top speed of about 270mph and Ju 88's, capable of nearly 320mph.

The German invasion of Denmark and Norway in April 1940 brought about major changes in RAF planning and better radar cover in the Shetland area was provided with some urgency, particularly to the east and north. Almost immediately a transportable radar unit was formed and deployed to Shetland, see:

http://ahistoryofrafsaxavord.blogspot.co.uk/2013/01/the-first-radar-on-unst.html

Many sites throughout the UK had been surveyed to assess their suitability as locations for radar installations, including some on Shetland. It was decided to go ahead and construct Chain Home Stations at two sites in Shetland, at Lambaness (Inner Skaw) on Unst and at Noss Hill, just over 3 miles north west of Sumburgh Airfield.  

In addition; in July 1940 a few Hurricane Mk1's were deployed to the grass field at Sumburgh, providing a much more potent fighter force.

The building of the Chain Home System was probably one of the biggest construction programmes ever undertaken in the UK but the remote Shetland Islands provided a particularly difficult challenge. All of the timber, steel, cement and electronic components had to be shipped up from mainland Scotland in wartime conditions. Not only were the materials required but skilled workmen employed by specialist contractors had to brought into the islands and accommodated. Firms like Watsons, JL Eve , &  Riley and Neat, were heavily involved. Vast quantities of bricks from Lothian brickyards were shipped up from Leith. Considering the difficulties it is surprising to me that the Advance CH stations were operational as early as they were. RAF Noss Hill was on the air in December 1940, followed by RAF Skaw in January 1941 - the transport of materials to a site on Unst being a little more complicated. To digress slightly, as mentioned above, Noss Hill and Skaw both opened as Advance CH stations. These were fully operational sites with transmitter, receiver and generator huts protected by blast walls. The aerials were on 90ft wooden masts. Work continued at both sites to bring them up to full CH status.  The ACH layout at Noss Hill; for example, can be seen in this recent Flash Earth image:

The final CH sites would have hardened bunkers to protect their receivers, transmitters and standby generators. New 240ft wooden receiver towers and 350ft steel transmitter towers would also be erected.

 The question of achieving better coverage against low-flying aircraft was also addressed. In June 1941 it was decided to build two RAF Chain Home Low stations, one to the west of Walls on the Shetland mainland (RAF Watsness) and the other on the island Whalsay (RAF Clett). There were delays in these sites becoming operational, bad weather and late delivery of components affected both units, whilst Clett had further complications  caused by an extra sea crossing and by a pier at Symbister which hadn't been designed for heavy equipment! RAF Watsness became operational in February 1942 and RAF Clett in the following month.

The  site of the RN radar at AES 1 Sumburgh Head was excellent for giving coverage south towards Scapa Flow and for monitoring the gap between the Shetland Mainland and Fair Isle. However; it was a poor site for much else, with the foghorn and lighthouse tower obscuring large segments of the sky around the site. The modern picture below shows the transmitter building (in the centre with a peaked roof). The original roof would probably have been flat and, at the beginning, would have had a hand rotated CHL aerial on a wooden gantry above it - with a similar aerial above the roof of the receiver hut.

The receiver aerial, to the west of the transmitter was also obstructed by the buildings causing more "blind sectors". It was decided to build a new unit on a site a little further north at Compass Head. Developments in radar, such as powered turning for the aerials rather than hand-cranking by  manual operators, meant that it was simpler to provide 360 degree cover around each CHL/CDU site. Better equipment was installed at Compass Head and the radar at Sumburgh Head became a back-up facility. In 1943 the site was transferred to RAF control as RAF Grutness. The next picture shows the location of the radars with the CHL/CDU units marked in white:

With continued advances in radar technology all of the 8 static sites in Shetland were modernised as new equipment became available. Improvements in communications also played an important part in achieving success. For example, AES4 on Saxa Vord was largely dependent on a single GPO line connecting though the Haroldswick Post Office when it first became operational. Personnel became frustrated when they could see hostile aircraft and friendly fighters on their radar but were unable pass vectors to the fighters, resulting in a number of missed interceptions. Speedier W/T, R/T and landline links enabled fighters to be directed against enemy intruders more efficiently and led to the destruction of, or damage to, numerous German raiders. Over the coming months I hope to write more about each of the RAF units in detail. After that I may carry on to write to write about AES 1, 2 & 3 - a piece on AES 4 has already been issued here:

http://ahistoryofrafsaxavord.blogspot.co.uk/2012/07/admiralty-experimental-station-4-unst.html

Should anyone have any data or pictures of any of the Shetland radar sites I would be pleased to hear from them: gordon.carleATgmail.com (replace the AT with the usual symbol).

Some further articles (added Jul 18)

RAF Clett 1942 - 1945, AMES 96a
http://ahistoryofrafsaxavord.blogspot.co.uk/2015/06/raf-clett-1942-to-1945-air-ministry.html

RAF Watsness 1942 - 1945, AMES 55a
 http://ahistoryofrafsaxavord.blogspot.co.uk/2015/05/raf-watsness-1942-to-1945-air-ministry.html

RAF Noss Hill - Air Ministry Experimental Station (AMES) No 54 http://ahistoryofrafsaxavord.blogspot.com/2016/03/raf-noss-hill-air-ministry-experimental.html

RAF Skaw (AMES 56) - Part 1 - Inception to Jan '41 (15/o4/18)
http://ahistoryofrafsaxavord.blogspot.co.uk/2018/04/a-history-of-raf-skaw-ames-no56-part-1.html
RAF Skaw (AMES 56) - Part 2 - Advance CH - From Jan 41 to May 42 (16 May 2018)
http://ahistoryofrafsaxavord.blogspot.co.uk/2018/05/a-history-of-raf-skaw-ames-56-part-2.html
RAF Skaw (AMES 56) - Part 3 - CH Ops
http://ahistoryofrafsaxavord.blogspot.com/2018/05/a-history-of-raf-skaw-ames-56-part-3-ch.html
RAF Skaw (AMES 56) - Part 4 - Transmitters & Receivers
http://ahistoryofrafsaxavord.blogspot.com/2018/06/a-history-of-raf-skaw-ames-no-56-part-4.html

CONTENTS LIST

http://ahistoryofrafsaxavord.blogspot.co.uk/2012/03/contents-list.html

 

 

 

Tony Sparkes - Saxa Vord Dec 63 to Jun 65

Tony Sparkes had a memorable introduction to life in Shetland. He left Aberdeen on the MV St Clair on 30 Dec 63 and arrived in Lerwick the following morning.  (Left click on pictures to enlarge):

He describes his first day in Shetland - "A dark wet quayside in Lerwick was my first view of the islands and then, in those days a visit to the local travel agents (Leask’s) to collect tickets for the ‘overland’ was required, I was surprised that not only did they know who I was as soon as I walked through the door but also where I was going to work and how long I was there for. A trip across the islands in the half-light resulted in an arrival late afternoon at Saxa Vord, just in time to be given a place to sleep before it was time to join the New Year celebrations in the NAAFI. I can still vaguely remember being introduced to the Station Commander Sqn Ldr Whiley (very popular CO) about 3 o’clock in the morning after consuming several cans of ‘Red Cap’ surrounded by most of the rest of the camp personnel who were celebrating New Year in typical style, and that was my introduction, and apart from sleeping, my first day at Saxa Vord."

At the age of 18 it must have been an interesting experience. For the next year and a half Tony worked at Transmitters on the Ward of Norwick, with occasional visits to Receivers on Sothers Field. The climate of Unst ensured that his work was not always of a technical nature:

A few of the photos he took from Transmitters & Receivers are shown below, the first is looking NE towards Outer Skaw:

The next is looking in the same direction but on a slightly colder day:

This next photo was taken looking a little more to the east and includes the old GPO building, which was extended in the early 70's to include Radio Norwick:

The hill on the right in the following picture is Clibberswick (525'),  which is to the SE of Transmitters:

Hill Ness can just be seen just to the right of centre in the next photo, which was taken a short distance to the east of Receivers, looking NE:

 

The next shot shows the top of Saxa Vord with the then recently completed Type 80 Radome:

The next group of Tony's photos show the Ops Site and a few views from the road up the hill, they were possibly taken during a watch changeover. The first shot was from just outside the gates of the Ops Site and shows the SE corner of the Site and the view towards Muckle Flugga:

The next shot was taken from close by, looking south towards Burrafirth and Loch of Cliff. Local peat banks can be seen in the foreground:

Two pictures taken from just outside the Mid Site and show the road up to the Top Site and the radar heads, a Land rover disappearing into the distance:

The following photo was taken near the turn-off to Receivers and Transmitters looking across Burrafirth towards part of Hermaness. The small valley in the centre of the picture is that of the Burn of Winnaswarta Dale, which flows into Burrafirth just north of Fiska Geo - which can be seen to the left of the Burn:

The next view of Hermaness & Muckle Flugga was taken from a little further down the hill, just north of a rock feature known as "The White Haggle":

In much of mainland UK there was a massive surge in the sale of Television Sets just before the Coronation in 1953. The sale in Shetland were not affected by this event. In fact TV didn't arrive in Shetland until 15 Apr 64, when a new transmitter on Bressay started relaying a single BBC channel. The signal was available in Unst when you were lucky! Tony remembers "reception was very ‘hit and miss’ and that was if the relay transmitter was on the air. If it failed somebody had to come up from Aberdeen to fix it. Where the locals acquired their first televisions from I’m not sure but some of them were very antiquated even from those days and several appeared at transmitters for us to try and fix. (it is interesting to note that this was also the year of Andy Stewart’s visit, a coincidence or the good old BBC playing politics even in those days)"

Although Tony's first trip from Scotland to Shetland was on board the St Clair, subsequent return journeys were made in British European Airways Handley Page Heralds.  The next picture was taken from one of these aircraft when it was on the ground at KIrkwall in Orkney.

The next two were taken at Sumburgh

Heading north from Sumburgh it was the well-known overland trip, familiar to many servicemen at Saxa before the RoRo Ferries were introduced in the early 70's. Firstly, Lerwick (for those with an interest in the fishing industry, LK509 was the Jessie Sinclair, a seine-netter):

and later on, the crossing of Yell Sound:

 

arriving at Ulsta about 20 minutes later where, hopefully, there was a coach waiting:

The coach would transport you to Mid Yell, where it was necessary to decant & transfer to another bus. The Earl of Zetland, which delivered cargo and passengers between the islands occasionally called at Mid Yell:

The new bus would take you to Gutcher, near the north end of Yell. From there another small ferry would transport you across Blue Mull Sound to Unst (for more of the overland see: http://ahistoryofrafsaxavord.blogspot.co.uk/2011/09/overland-part-2.html).

Tony also remembers what was possibly the first Rugby game on Unst. Although some rugby had been played in Shetland in the 19th century, participation amongst the locals had ceased until 1972, when the Lerwick Rugby Club was formed. Saxa didn't have the manpower to send 15 men teams to the UK mainland with the travel arrangements as they were, so this first game would have been between sections. In Tony's words, " What was I suspect the first rugby match to ever be played on the island. That must have been in 1964, it was played at Burrafirth and we had to chase seals off the pitch before we could play and it you kicked the ball into the water you went and got it out! I don’t think the locals could believe what they were seeing."

Saxa had a Skittle Alley for most of its life, though it was not always the same one - new ones were constructed and older ones were refurbished. Tony can remember that there was one opened, probably early 1965, in a building round the back of the Ice Cap.

Tony also took a number of pictures of the Domestic Site and its surroundings. The first two were taken in the winter months. This one was taken from the area of the Billets towards Lambaness and the hill up to Skaw (known as "The Floggie"):

A picture, taken from beside the Site, with the old Wesleyan Kirk in the foreground and the Ward of Norwick & Transmitters in the background, is next:

A couple of views taken in better weather follow. The first is of the area of the main gate and the second is of the Ice Cap (cinema):

One of the local shops, Sandisons at Haroldswick, is featured next. Sandisons also owned the larger store and bakery at Baltasound, known as Skibhoul:

Tonys last Unst picture is of one of Shetlands famous exports. Shetland Ponies have long been bred on Unst for selling to the south folk, mainly as working animals in the early days but more lately as pets:

My thanks to Tony for allowing us to share his photos & memories of Unst.

CONTENTS LIST

http://ahistoryofrafsaxavord.blogspot.co.uk/2012/03/contents-list.html

 

 

 

Arctic Circular - October 1982

 

The quality of the copy that I have is poor and therefore the reproduction is not too good. An interesting inclusion in this issue is a list of the allocation of Married Quarters at SHE (Left click or zoom to enlarge),

 

 

CONTENTS LIST

http://ahistoryofrafsaxavord.blogspot.co.uk/2012/03/contents-list.html