Brian, Welcome from a fellow who also was born and bred in Blyth.  I am not blowing my own trumpet but have a look at "Blyth History" here in the Northumberland section.  I stumbled across Rootschat one Sunday night, and started a new topic, as above, without realising what I was doing.  It has grown and grown with many stories, anecdotes, maps and photos relating the Blyth area.  I am sure you will find mention of North Blyth and Cambois in the numerous pages of Blyth History.  The last time I looked at the history, it had been read 84,000+ times.  !!
And on a more helpful angle, try to get hold of the following :"BLYTH MEMORIES." by Jim Harland.  I have just received 'Part Three'.  It includes 'Battleship Wharf' also 'The High Ferry.'
I think there are 5 parts to Blyth Memories.  They are published by : 
www.summerhillbooks.co.uk  The one I have is/was priced at £9-99p.
Best of luck and good researching !!!!
pyfb.