Command of the sea does not mean that the enemy can do absolutely nothing, but that he cannot seriously interfere with the undertakings by which we seek to secure the object of the war and to force our will upon him.
Various Conditions of Command
1. It may be (a) general; (b) local.
(a) General command is secured when the enemy is no longer able to act dangerously against our line of passage and communication or to use or defend his own, or (in other words) when he is no longer able to interfere seriously with our trade or our military or diplomatic operations.
This condition exists practically when the enemy is no longer able to send squadrons to sea.
(b) Local command implies a state of things in which we are able to prevent the enemy from interfering with our passage and communication in one or more theatres of operation.
2. Both general and local command may be (a) temporary; {b) permanent.
{
a