In answer to the question whether those sections will come into force when this shipping act is proclaimed, might I refer to section 665, which provides as follows:
The governor in council may, from time to time, by order in council declare that the foregoing provisions of this part of this act shall not. for the period specified in such order in council, apply, either throughout Canada or in any specified waters of Canada, to the ships or vessels, or to any specified, ascertained or ascertainable class or number of the ships or vessels, of any foreign country.
There is a special provision covering sections 661 to 664 inclusive.
Topic: CANADA SHIPPING ACT