281.—(1) When the Minister makes any bye-laws, he shall cause the boundaries of the area to which the bye-laws relate to be marked in such manner as appears to him necessary to make the boundaries known to all persons in the locality.

(2) Where any bye-laws are made under section 278 in relation to any area which consists of any foreshore, sea or tidal water and the boundaries of that area cannot, in the opinion of the Minister, be conveniently marked by permanent marks, those boundaries shall be described in the bye-laws and shall be deemed to be sufficiently marked within the meaning of subsection (1) of this section if, while that area is in use for military purposes, sufficient means are taken to warn the public from entering that area.