The Isle of Man Companies Act 1982 can be found here. – Download it – this one is worth a look.
The 1982 is a very important Act – brought in at about the time the Island was finding its feet as an international financial centre. (in those days it was called a tax haven – whisper it !)
It runs to about 26 pages – Part I deals with accounting matters, Part II deals with management matters and Part III everything else.
In case you were wondering ( I was) S18 is the part which requires Isle of Man Companies incorporated under this Act to have 2 directors and S19 deals with the appointment of a Company Secretary.