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National Shipbuilding Strategy

SANO member Philip Simons has commented on the National Shipbuilding Strategy report, featured earlier in Sussex Navy News.

MoD had commissioned a report by Sir John Parker to inform a National Shipbuilding Strategy aimed at driving changes in the naval shipbuilding sector.  Sir John’s report said the UK has a vibrant shipbuilding and marine engineering sector, improving competitiveness and innovation.  However, building RN ships takes too long and suffers from lack of pace – affecting timescales and costs – lack of a governance system and unclear project ownership and responsibility.  More attention needs to be paid to export potential, production-friendly designs and avoiding unnecessarily expensive standards.  He made 34 recommendations.

Philip Simons commented:

“Sir John Parker’s report on naval shipbuilding is a no-nonsense review of all the ridiculous practices that have plagued our naval shipbuilding practices, capability and efficiency, it seems for ever.

What he suggests is precise and sensible, however I haven’t the confidence to think that such a radical reform of such entrenched bad practices is achievable.  It will take a lot of cajoling and reform of staid thinking and settled practices, before this could come to fruition.

However, to save the shipbuilding industry in this country and especially to continue building our own warships, then this needs to happen.  Watch this space!!!!!”

Parker Report here.  A handy summary, in the form of a covering letter, here.

The Bomber NAVCENTRE                                                   

SANO Chairman Richard Stanton, a seasoned submariner, sent in a pair of articles from the Ship’s Magazine of RN Polaris submarine HMS Renown, 1968 – 96, setting out 2 senior rates’ views on this and related weighty matters.

In view of the number of in jokes in the articles (which I mostly failed to spot – Webs), our leader is prepared to explain all, over quantities of alcohol bought at enquirers’ expense in any suitable (TN22) hostelry.

Read on below. 

The Bomber NAVCENTRE – Two Views

The two articles below appeared in the Hi Ho Journal, the Ship’s Magazine of Renown (Stbd). The Hi Ho Journal was produced weekly when at sea, some 20 copies being photocopied and delivered to departments and messdecks. At least two sets still exist, one donated to the Submarine Museum by the Editor, POCEL Eric Wilding, and the other by the family of the late CREL Denis Elgar.

‘The NAV CENTRE’, first below, appeared in the 7 March 1969 edition. The author was CRMech Tony Marvin (AJM). The second article, ‘THE NAVCENTRE (The Full Inside Story)’, was the response the following week, written by Denis Elgar under the pen-name Ragle.


Though this compartment, aft of the Control Room on 1 deck, serves more purpose than just POLARIS, it is essential to the Polaris Weapon System because it supplies vital information to the MCC (Missile Control Centre) to allow the DGBCs (Digital Geoballistic Computers) to compute the “Missile Ballistic Problem”, i.e. how to get the missile to land at the right place. The NAVCENTRE crew you will know from your Commissioning Brochures, or if you never receive this seaview impression of HMS RENOWN, your religious service sheets. This goes for the rest of us too.

They have the problem of determining at any time the exact position of the ship! To this end they have SINS (Ship’s Inertial Navigation System), which relies upon accelerometers to measure and update a digital computer every time there is a change in the ship’s position. To aid and verify this are the British Decca Navigator and the American LORAN, which give positional fixes. There is a conventional ship’s gyro and a satellite tracking system to ensure, guarantee if you like, that at any finite time the DGBCs know exactly where our ship is for computing the Ballistic Problem.

The Navigation System is connected to the Polaris Weapon System in two separate and distinct ways.

  1. The simplest: It is used by the alignment group in an optical manner to act as a reference to the “Trollies” in the MCC Upper Level and thus the missiles to measure any loading errors; also to cause the weapon NOT to be released if any flexures due to deep dives and bumps etc would cause the missile to go to the wrong place. A measure of the loading errors is needed and used in the DGBCs to compensate the missile flight for this mechanical loading error.
  1. This is most important to me: The navigators supply my compartment, the MCC, with the latitude and longitude of the ship’s position for use in the DGBCs to compute velocities to be gained.

Also sent to the MCC is a reference of ship’s heading, pitch and roll, which are used to make corrections to the missile, making it appear to the missile itself that it is taking off from a stable platform, i.e. a solid launch pad instead of a submarine.

Should the navigation team at any time doubt the accuracy of this information sent to the MCC, which incidentally is checked via WISSERT (WSRT – Weapons System Readiness Test) daily, they can put a hold on the whole weapon system until once again they are confident the DGBC is able to compute valid information.

Author’s CV:

Tony Marvin (AJM), joined the RN in June 1952. He trained in Radio and Radar in HMS Collingwood. Served in various ships and Shore Wireless Stations with various promotion/specialist training until joining Submarine Service in 1965.

Trained in the Polaris Weapon System at Dam Neck, Virginia, USA. Joined the Renown programme at Cammell Laird, Birkenhead, remaining with her during the Build, Work-ups, Missile Tests and several patrols to refit at Rosyth in May 1973. Joined Revenge in June 1973 to Refit September 1974, then back to Renown September 1974 to January 1975. This period involved many Patrol periods as Missile Fire Control Chief.

January 1975 to January 1976 served in Neptune, Dolphin and Nelson to retirement and onto second career in the computer industry, to third career: Retirement and voluntary activities.

THE NAVCENTRE (The Full Inside Story)

I was amazed, nay astounded, that some person, namely AJM, whose name does not appear on the roll of honour on the Nav Shack Door, and is consequently not a welcome visitor to that place, should dare to write about its function and purpose, neither of which are understood by many on this submarine (or ashore for that matter); but in the interests of further education and Part 3 qualification I will give you all for free the full inside story, uncleared by customs, censors or security.

The Navcentre is manned (I use the term loosely) by a very exclusive types of Homo sapiens, who are recruited or press ganged from the “Ellarewe” tribe inhabiting the primitive rain forests of the North Finchley Bypass. Once recruited they are trained (house) regardless of expense. This is a most difficult process, invented in the USA by Professor Neck, hence their expression of disgust ‘Dam Neck’.

The Navcentre is situated just abaft (sailoreze for behind) the Control Room. Its domed roof is painted and tastefully embellished with festoons of wires and pipes, and it presents a sight not to be missed by any tourist. It has been compared unfavourably with that of the Sistene Chapel, but on contemplation does grow on one while on watch.

Suspended neatly from this magnificent scene are two large bowls, of washing up variety. Contrary to popular belief these are not the heart of the system; one is in the process of being constructed into a breeding cage for budgies, and the other contains umpteen gallons of fermenting home brew for the Chiefs’ Mess.

The real heart of the system comprises two pieces of ‘lodestone’ and a boy scout’s compass removed from my son’s toy box. These lodestones are suspended Fore & Aft and Athwartships (Chinese Style) on pieces of electrical string. Cammell Lairds took six months setting it up; it should take the duty watch of chefs about ten minutes. Now as you all know “A drunken stone gathers no moss when it is moving”, and these stones are loaded. Now providing moss can be grown on these stones, any movement of the boat can be measured by the growth of the moss on them. Thus by careful measurement of the moss length on the sides of the stones, extremely complicated mathematics, a quick shufti through the periscope and a look at the boy scout’s compass, we can tell at any time exactly where the ship is. The moss used is of a very special type, and requires an exact controlled environment to ensure a constant rate of growth when not moving. Now, every 8 hours or so this moss is too long to be measured by our yardstick or guessing stick, which depends on tile colour of the watch on. The stones are then shaved with an electric razor. To save waste the shavings are then dried, ground and powdered and added to the tea; hence our preference for coffee, but it does save a few pennies on the catering allowance.

This and a large number of boxes – black, grey and red fablon covered – comprise the Nav Sub system. There are a large number of computers, each with its own specialised function, i.e. Missed Meals money, travelling expenses, RA, Football pools, watchkeeping lists, etc. The cupboards contain a large supply of paper and pencils for working out ‘Anagrams’ in the various crosswords attempted by the staff.

The very high sheen on the floor is entirely due to the assistance of the Forward ERA and his staff, who supply seemingly unlimited quantities of oil (Hydraulic A.P.111111111) at any time Day or Night. Another outside supply, and for which thanks are given to the After Ends, is chilled water. This is required to cool the Coca Cola of those who were brainwashed in the States, when it’s 110 degrees down aft and the phone rings; remember, Coca Cola at any temperature above 60 degrees doesn’t taste at all nice unless your oppo’s tot is in it. (Moral: no chilled water, then give us your tot).

Some of you are fortunate enough to supply us with a wireless aerial or help drape one around the missile compartment. The reason this aerial is required is that we must have constant reception on Radio One or we won’t be able to keep our top 20 chart up to date. A loss of reception of just three minutes could mean missing a record and, as a consequence, us dropping a record from the list. If you consider your duty arduous, try listening to pop music for four hours, or even counting lists to determine which is No. 1. (No prizes are offered for guessing who is No. 1 on this boat). A large number of loudspeakers are also fitted, but their quality of reproduction leaves much to be desired. It is hoped at the first refit to have the Navcentre wired for sterophonic sound. 3D video has been suggested, but it is felt that in the interest of National Economy their Lordships would not be able to approve it. Various telephone systems are fitted to allow us to call our reliefs, book late meals from the galley or complain to various parts of the ship whenever we feel so inclined.

The whole reason for having a Navcentre completely escapes me; the most obvious one is to allow the Officer of the Watch to nip in for a crafty burn without letting the watchkeepers have one all round. The list of names on the door is not, as you may have been led to believe, for security but we are limited to the number of cups of coffee we can bring through the Control Room per watch. Some members of the staff get nasty when they dip out on our perpetual coffee boat.


‘Ragle’ was the most commonly appearing pen name used in the Hi Ho Journal, by CREL Denis Elgar. This article is published by kind permission of his widow, Vivienne.

CREL Denis A Elgar was born in 1931. Denis served with Eric Wilding (Editor of the Hi Ho Journal) in HMS Tiger before joining boats. Already married to Vivienne, he joined submarines in Dolphin in January 1966. With Eric, he stood by Renown building in Birkenhead and did the work-up, DASO and first two Starboard crew patrols, making his home in Helensburgh. Denis was drafted to HMS Forest Moor in Yorkshire in late 1969, then HMS Neptune in 1970. Leaving the RN in 1972, he worked at RAF Northolt and then for North East Gas. Sadly, he died in 1997. Like Eric Wilding, he retained copies of the Hi Ho Journal after leaving Renown, these now being split between his two sons, Simon and David. Denis was a talented and unassuming author.

Sadly, Eric died in October 2018.


SINS …as I was taught! 

The inertial navigation system, and hence the vessel, knows where it is at all times. It knows this because it knows where it isn’t. By subtracting where it is from where it isn’t (or where it isn’t from where it is depending on which is the greater) it obtains a difference or deviation. The internal guidance system uses deviations to generate corrective commands to direct the vessel from a position where it is to a position where it wasn’t. Consequently, the position where it was is now the position where it isn’t.

In the event that the position where it is now is not the same as the position where it originally wasn’t the system will acquire a variation (variations are caused by external factors and discussions of these are beyond the scope of this simple explanation).

The variation is the difference between where the vessel is and where the vessel wasn’t. If the variation is considered to be a significant factor, it too may be corrected by the internal guidance system. The vessel must now know where it was.

The ‘thought process’ of the equipment is as follows: because a variation has modified some of the navigation information which the vessel acquired, it is not sure where it is. However, it is sure where it isn’t and it knows where it was. It now subtracts where it should be from where it wasn’t (or vice-versa) and by differentiating this from the algebraic difference between where it shouldn’t be and where it was, it is able to obtain the difference between its deviation and its variation; this difference being called error ….


Fascinating. If the Navcentre really did rely on Decca and Loran, Moscow need not have trembled – the missiles would have landed somewhere in Siberia. Love the Parry dit!

Hydraulic oil at this time was PRI 1192, which stands for Pennsylvania Research Institute, PROJECT 1192. Later britishised to OX 30.