THE EVOLUTION OF PLEASURE CRAFT COMMUNICATION
Next time you pick up a mobile phone to chat to another boat or log a trip report via the Coastguard APP, spare a thought for the boats of days gone by that had only one option (other than flags) for communications at sea. As a child I was fascinated by all these strange random words Zulu Mike Bravo Lima etc – my father being an ex-army comms man, morse was his thing. On holidays, myself and brothers were ‘made’ to listen to ships at sea and try to record the message, the winner i.e. most accurate, would win a chocolate.
WW follower Ken Ricketts is of an age that he has seen and experienced the evolution of New Zealand maritime radio communications and recently he wrote a comprehensive chronicle on the subject, which you will find below. It is worth a read to either educate or refresh yourself on the huge advances that have been made in the field. The story is peppered with a few tales directly relating some of our woody fleet (scroll over photos to ID the woodys) so hopefully that will keep those of you with a short attention span – awake 🙂 Enjoy
Maritime radio-telephony in Auckland pleasure craft, had its first & humble beginnings in 1946, at which time, Ken’s father, Ralph Ricketts, entered the fray, with the second ever such installation, in Auckland, (the original first one was on the REHIA owned by Bill & Phyl Ryan at that time — who told RR about it) RR immediately bought, (as ultimately almost everyone did, once they knew about them ), an ex WW II war assets double side band, (DSB), ZC1 MK II R.T., for 20 pounds, & fitted it to the Rickett’s launch – JULIANA, after which RR had a visit from a Govt radio inspector, who took diagrams of aerial format & layout, made various notes on his file of the installation, checked RR’s ability to use the set, made a test call himself, to “ZLD Auckland Radio,” sited at Musik Point at that time, on the entrance to the Tamaki Estuary, & made sure RR had a “Restricted Radio Operators License,” which was required in those days, by all radiotelephone operators, on all pleasure craft, – now long since discontinued, & he allocated JULIANA the call sign of ZMYP.
Originally, there was only one call frequency, & that was 2012Kh, in 1946, used for all purposes, but not too long after that, 2012 was reallocated exclusively for harbour control use, to the Auckland Harbour Board, & pleasure boaties were allocated 2182, the international distress frequency for initial calling to government shore stations, & 2162 for ship to shore working, & 2456 & 2638 for ship to ship gossiping.
The 2162 working frequency, was later changed to a duplex frequency, with 2162 for listening to ZLD, & them receiving on 2207.
The frequency of 2045, was allocated around 1950, for use for transmission between privately owned shore stations & boats, such has Port Charles Radio, (the legendary Jim Smith owner/operator ), Gt. Barrier radio , Awaroa Radio etc.
These shore stations were used extensively, for many years, from around 1950, by many commercial fishing boats, working throughout the Gulf, many of whom, reported in daily their positions, usually around 6 pm. There were also many pleasure craft which used the service, & RR was one of them. He joined the Port Charles association for most of his boating life with legendary Jim Smith the owner/operator. RR or Ken would call Jim every evening at around 6pm & report in our position at that time.
You paid a small annual fee usually, to join their non profit associations, to cover their running costs & they kept records of your locations, times of calls, assisted in any way they could, with any problems you may have had, etc., & these associations usually operated, for several set times, of about 15 to 30 minutes, each day. Ken thinks some may still exist on the VHF channels, possibly there is one on Gt. Barrier Island.
Auckland Coastguard was also allocated the frequency of 2128, (from recall), for ship to Coastguard use.
By the early 1950s ZLD had introduced a radio telegram service to land based recipients who had a telephone number available, as the address & the telegrams would be sent by ZLD to any entity via that phone number ( & later delivered in hard copy via normal post to the address of the phone number), & if a reply was quested, or anticipated, they would telephone it through immediately, whilst the ship waited on standby, & ZLD would call back with the reply ASAP.
The cost, was fairly expensive for the era, & on a cost per word basis & the costs were charged to the landline phone number. This service stayed in place as far as Ken knows right through in to the VHF era.
Land based parties, could also send radio telegrams to boaties, with the address, via the P & T telegram phone number, which must include the call sign & was as follows; (as a example) Mr. Smith Vessel ZMYP JULIANA C/- ZLD AUCKLAND RADIO.
ZLD at the end of its 3 or 4 hourly daily weather forecasts & shipping information, would give a list of all telegraphic traffic held for all vessels including of course, & very importantly, their call signs, & most would listen to these broadcasts, as often as possible, & advise friends on other boats, if they were near at the time, that ZLD had a message for them.
By about 1983 this communication with the outside world was taken a step further, & ZLD introduced a VHF radio telephone service, which many mature old time boaties may recall, where a ship could call ZLD, on channels 22 & 23, in the Auckland region, give them a landline number, which they would dial & then patch your call to ZLD through, to enable you to talk direct, to the subscriber, which whilst it was a good service, it had its shortcomings & limitations, shall we say, as any boatie who by chance or otherwise, dialled into ch. 22 or 23 on his boat, would inevitably be privy to what were sometimes surprising, & very private conversations, also necessarily, only one party at a time in the conversation could speak, & the other had to listen, & one had to say “over,” at the end of each segment of conversation, to enable the other party to know when to respond,
Calls to boaties from landlines could also be booked with ZLD & ZLD would call them back, when they were able to make contact the vessel, the land based party wished to contact.
There was one other form of radio communication which evolved & inevitably found its way in to the boating world for a period in the 1970s/80s & that was Citizen Band (CB) radio transmitting communication equipment, for short distance communication, unrestricted in it use, & it could be used by any person, at any place for any lawful purpose, but it was restricted, to a very low aerial output power in all sets, which could be bought & licensed extremely cheaply, much more so, than proper marine purpose built equipment, & this medium became popular for a period, in the 1970/80s, with some boaties, mostly in the smaller cheaper craft range, where cost was a really important issue for some, but whilst it was cheap, it had many shortcomings, including its very short transmission range, & as there was no structured organisation of any type, either private or govt., monitoring it, one simply in event of distress, had to rely on someone within the range for your set, hearing your call, & helping as best they could, one way or another. So whist it was so very limited in its rescue value, nevertheless it was better than having no communication at all, if in need of help.
These sets had a good number of preset channels & operated on the HF 26.500 Mh band in NZ., which was a different frequency range to many other countries, including Australia, which used 27.500Mh), & call signs were allocated to owners on a regional basis, depending on where you lived.
Ken installed one on his 40′ launch TIARRI, when launched in 1979, in order to have maximum possibility of assisting boats, in times of distress or breakdown. TIARRI’S main call sign was ZM3199, which, along with the radio, Ken took from his first boat, FLYING SCUD, which was issued to F.S. in December 1953, when she was built & launched by Roy Lidgard, just after the advent of the letter number era – only 1100 numbers in to the new system.
There were the very odd exceptions, to the above early days policy, & call signs, mostly around the 1940s era, almost all of which, were for boats, where they were owned by the owners of private islands, in the Hauraki Gulf & Northland, & perhaps the Sounds, where they had a licensed, private, island based set, on their island, & a special boat call sign allocated to their boats, for keeping in touch with their home bases, usually where these boats were their sole means of access, to the outside world, & these sometimes, were of a number letter combination, with just one or two numbers usually, & had just one specific frequency, to operate with.
All transmitting in DSB & SSB sets was technically very accurately totally controlled, often by a plug in type internal “Chrystal Control unit,” or similar, for each frequency,& fitted to all sets for all transmitting frequencies.
There were later several lower end of the High Frequency, (HF) band, frequencies added in the 3, 4, & 6, Mh bands, mostly used by off shore boats, out at sea.
This cumbersome, & red tape process, of registration, continued for a good number of years, right through the initial era of “ Double side Band “ transmission, & in to the upgrading of that era, to “single side band” (SSB) transmission, circa 1970s
After single side band transmissions became compulsory, around the 1970s this required the purchase of a new set, & the only double side band frequency which was still legally usable, was the international distress frequency of 2182 Kh, & this could only be used for calls to govt shore stations (ZLD for Auck) or ZLW for Wellington, as examples), for emergencies only, & craft which did not wish to outlay for a new SSB set, or alternatively still keep a 2182 set after they bought a VHF set after they were introduced, could modify & keep their old set, & were then reallocated a compulsory special “ZMX” based call sign, starting at ZMX2001.
These days ZLD has left Musik Point, & the government’s ZLD & ZLW (& ZLB in the South Island,) which all later came under the umbrella of Telecom, being the replacement that took over from the old P & T., which in turn, has now become a totally new entity, as “Maritime Radio,” & under the umbrella through various subsidiaries, to “Maritime NZ.,” being another different Govt Dept, with the transfer becoming effective from midnight, & starting on the 1st October 1993 & the operators of which, are now all based in the Old Radio NZ Avalon building, in Avalon, Lower Hutt, Wellington, with transmission facilities, in Wellington & Taupo, plus a network of repeaters, scattered around the country monitoring the whole country, which is now all controlled from this one location.
In the later 1970s early 80s Very High Frequency, (VHF) maritime radio was introduced, which gave many benefits, with all its ongoing ever increasing refinements, & installation of shore based repeaters, on high ground, throughout the country, which has now ultimately totally replaced the old Medium Frequency DSB & SSB sets, with many advantages to all users, for all local NZ & inshore boating, along with the discontinuation of licensing of individual operators, & inspections by govt inspectors, of all boats so fitted, with RT equipment.
Also, Radio Spectrum Management, the govt department which these days controls allocates & administers all radio & TV transmissions, call signs & frequencies, has vested in NZ Coastguard, the authority to issue calls signs on its behalf, of a mixed letter number type, such as, (possible examples only), ZMQ 2947, ZMW4526, ZMR 2937, & so on, as a result of the huge demand for these, these days, & the time consuming process it used to be, for R.S.M.
Originally in 1946, this was all under the umbrella of the Post & Telegraph Department to later become Telecom, & remained so for many years, until 1987, when it all started to change & we have ended up, for a good number of years now, with RSM, as the entity in control.
The pleasure craft call sign evolution, & changes to it, are as follows;
As above, all craft up until c1953, were all 4 letters alone.
As they were beginning to run out of call signs, around 1953, the Govt. wrote to all pleasure craft owners, requesting they approve the replacement of their existing all letter call signs with a letter number combination, starting originally, with the first reissued call sign of ZM2001.
It is important to note that the Govt., could not insist on this by law, & only request it, & if the owners did not consent to the allocation of a new call sign, the original then remained with the boat, & there are a few of boats that still have their original all letter call signs even today.
Neither Ken’s father nor the owner/builder of GAY DAWN, Bill Waters, who RR bought the boat off in 1956, surrendered their original all letter call signs, for their respective boats, — (see image above of GAY DAWN taken c1965, showing clearly, a typical DSB aerial set up as used for many of the DSB, SSB, medium frequency sets of that era), — RR sold JULIANA in 1956 with ZMYP, (which was somewhere along the way, later either abandoned, or replaced, with letter number combo call sign), & now, as referred to below, is reinstated to her for life. RR bought in 1956 & sold in 1970, GAY DAWN, with ZMIV in place, which however, also later along the way, was replaced by persons unknown, with a letter number combo, at least once, note: ZMIV has now been reallocated to the Rickett’s family and used on the vessel ROSEANNE, which is owned by Ken’s daughter.
Such was the ever increasing size of the “snowball,” of pleasure craft sets, that it was not all that long, before the original issue of the ZM2001 to ZM9999 were all allocated, & we then saw the issue of ZMA2001 to ZMA9999, followed by the final issue to the SSB era, which was ZMY2001 to ZMY9999.
It is important to note, that all call sign issues right from ZM 4 letter, ZM+, ZMA, ZMY, & ZMX, & all Coastguard issued call signs are approved & provide for use of all VHF sets.
All letter only call signs, which are all just 4 letters alone, must still be issued by R.S.M. direct, & are mostly reserved for all Govt vessels,(eg., all the Police DEODAR launches were & still are, all allocated ZMIH, during their term of service to the Police), also some very large off shore fishing vessels, & some NZ based pleasure boats, that cruise off shore, or are capable of cruising offshore have these call signs allocated as well.
Other pleasure craft, that have some classic, historical, or other special significance, are also issued these, at the discretion of RSM.
Ken has enjoyed a close & good relationship with RSM, for many years, & there are some interesting background stories relating to the issue of some of these special allocations of all letter call signs, which Ken has been associated with, & some of these are as follows. There are a tiny number of pleasure craft that were built prior to about 1953, where the owners did not approve replacing their original call sign, which the dept. would have requested, but could not insist upon in c1953.
Two examples of this are as follows;
One with its original 1946 issued call sign is RAKANOA, which still has her original call sign ZMTF as issued when new, & the other, is Owen Foster’s WAIRANGI, also with her original call sign of ZMTM.
A fairly recent approval exception, is the issue of ZMPY, to Peter Loughlin’s Colin Wild built LADY MARGARET, which was first issued to her, in 1941, by the Navy, & is recorded as such on her British Ship registration, (see below), & as a classic craft, with this history of her call sign, Ken assisted Peter, to secure this for her for life, when he bought her.
Likewise Francis Uren’s “W1”, was issued with ZMWI in 2014, which is another detective story. W1 was originally brought to NZ by the Royal New Zealand Air force in 1941, as their extremely fast, & prize patrol craft, & given in the circumstances, the logical Air force number of “W1”, which has now been reinstated to her, as her name, by present owner Francis, after a long period of being known as CARROMA.
As she is now W1 again, Ken approached RSM, gave them her history, & they in turn, approached their counterparts in the military, to see if they could uncover her original WWII call sign, but unfortunately all those records have been lost, so as an alternative, RSM offered Francis the call sign ZMWI. – They could not offer ZMW1 as international radio spectrum law, prohibits that type of call sign, worldwide, so she now has ZMWI for life, free of charge.
El Capitan is another interesting story, as she now has ZMEC. It goes like this; She was built c1961, by a farmer, in a shed on his farm, to a Chris Craft design, in Ohakea, & he carted her around on a big trailer, & used her at Taupo, & the Sounds, until 1976, after which time, she sat in a shed on his farm, never to move again, until bought by Tony Mitchell, of Lake Rotoiti, off his estate, post 2000. When Tony bought her, she had a Coden 2+ Mh multi channel, medium frequency, marine RT, which would have been fitted almost certainly, when she was new, which has now been replaced with a VHF, but for which, there had never been a marine call sign issued, as the original owner, was also a radio ham, with a “ZL#### ham radio licence & call sign, which automatically allowed him to use this call sign for his boat. Ken provided on Tony’s behalf, all relevant info to RSM, & requested, & they approved, ZMEC (El Capitan), which she also has for life.
Ralph Rickett’s JULIANA, now renamed MARJORIE ROSA, now also of Lake Rotoiti, has been reallocated for her life, her original call sign ZMYP, as issued to RR in 1946. Ken told RSM of her history, as the second ever pleasure craft in Auck., to have marine RT, in 1946, & they have approved the reissue to her of her original ZMYP, to Fraser Wilson, her present owner, for her life.
Story told by Ken Ricketts, edited by Alan H.
Further to my reference to call signs associated with private shore based stations as noted immediately below the image of FLYING SCUD above thanks to info ex HDK in a post re DIANA S/OKE BAY I now have the following examples of these call signs which is as follows;
ALMA G was ZLRC21, ALMA G II ZLRC33, AVALON ZLRC2, AYR ZLRC7, HINEMOA ZLRC20, MISS BRETT ZLRC8, MISS HELEN ZLRC3, MISS IDA ZLRC4, MISS KNOXIE ZLRC5, MISS RUSSELL ZLRC6 etc etc etc, the conclusion being that those game/cream launches operated from a single land base radio, call sign ZLRC, at Russell.
The only other ZLCG boat I can find apart from DIANA was JOSEPHINE with ZLCG2
DIANA or DIANA S was owned by H D Slyfield in1953 when she had call-sign ZLCG3.
….real rivet-counting stuff!!! — Thanks Harold — KEN R
Back in the late 70s early 80s we would run into a chap around the gulf islands who had a household telephone on board and would broadcast the marine weather forecast over Radio I. His name was Warwick R Walker..He had a 40ft plus launch with a lot of brightwork. May have been called Manteray, Monteray or similar..Does anyone recall this?
Really great to hear from you Tom — it’s been much too long since we caught up — please drop me an email to email@example.com so we can catch up– KEN R
Well written Ken, I have, in the day, often done weekend trawler scheds from ZLTN coastguard as standin weekend relief radio operator, as well as search and recue coodinator, as you may remember. I still hold my radio ham call sign.
I still remember the old Phonetic alphabet-
Able Baker Charlie Dog etc.
An impressive account of the developments in communications. I used a ZC1 when i did my CMT in 1958. I think I could have sent the message better by yelling, the range was so poor. Except at night when with a 30 foot aerial we could talk to Operation Deep Freeze. We also were the first to use the C12 set which was the first NZ Army transceiver radio. It wasn’t all that much better but easier to tune for casual soldiers.
Alan, an article on navigation over the years would be interesting too. What would James Cook have given for a SatNav?
I did say VHF was used for inshore & local use & indeed agree i could perhaps have added that MF & Particularly HF (AM), are still for in use off shore, because, of the ability of this part of the radio spectrum, to cover much greater distances, without the use of repeaters, however I would also note that the necessity & probably the use of these, is diminishing, with the availability of satellite based telecommunications, these days.
Also as my project was really directed at the local inshore NZ based boating fraternity, not the international mariners, I did not want to wander off my chosen part of the RT communications subject too much. This writing was mainly directed at, & intended to be of interest to, the local weekend boaties — KEN R
Ken missed one other memorable call sign, Coastguard’s ZLTN.
DSB radios were the days of local manufacture, the Marlin series from Autocrat, Pye’s Seaphone and one or 2 others.
I do not agree about SSB’s being totally replaced, whilst not needed on coastal boats as long as you can pick up repeater stations, you will still find alot of surveyed boats and fishing boats carry them as do offshore cruisers. Anyone going to places such as Three Kings should have an SSB installation. Even with Sat comms it is nice to have an SSB as backup.