blocus fictif

CONT: Blockades, in order to be binding, must be effective, that is maintained by a force sufficient really to prevent access to the coast of the enemy; if it is backed up by no force or inadequate force it is only a paper blockade which in law is no blockade at all.
CONT: Maritime blockades fall under three classes ... strategic, ... commercial and paper blockades or constructive blockades, namely those established by proclamation, but unsupported by the presence of a sufficient force of ships.