For the purposes of section 46, an explosive shall be deemed to be under
the control of the Director—
(a) if
it is in a Government magazine; or
(b) if
it is in a magazine afloat; or
(c) if
it is on board any ship or boat in any port; or
(d) if
it is in course of being landed from any such ship or boat; or
(e) if
it is in course of being shipped in any port; or
(f) if
it is on board any boat approved by the Director under section 39, or
owned by the board; or
(g) if
it is in course of removal from or to any magazine to or from any ship or boat
in any port.