John.
Over my morning cuppa, I have had a quick look at the link forwarded. I am now aware that your PRIMARY research focus is for 'Registers of Seamen's Tickets' and 'Crew Lists & Agreements' from around the world, to fill the gaps in the British Archived records that you have been accessing.
This is not my field of expertise, but I assume our Marintime Museum volunteers would have some knowledge of NZ civil records that have survived. From experience I have learnt that not all records in our National archive system have been individually indexed when it comes to individuals named therein OR their contact/enrollment details; but all held files, or bound books of old records will be with regard to the type of contents.
The historic Seamen's certificates, apparently over 16,000 of them, are in bound volumes which have been indexed, and some have also been digitised, and can be viewed on line. The certificates in the remainder can be viewed at the holding branch and photographed by the public for free. A few carry notification of access limitations due to preservation requirements. One such SPADES was still able to photo a copy of for some former research of mine.
These are the certificates I have been discussing on this thread and the thread I linked to. They are the official office duplicate copy and contain no other info about the sailor's employment.
The 1915 Arbitration Court press report that I found, I find very revealing about the conditions on the West Coast shipping trade out of Onehunga port on the Manukau, and as it supports some of my pioneer research, have compiled a group of press cuttings based upon the service of Alexander MacKINNON, into a short bulletin. You are welcome to a copy, and I will eventially forward a copy to the local Museum whence he came.
Must dash.
Alan.