That such a multitudinous host of types and individuals, both material and personnel, can be actually combined in one unit fleet, and that fleet operated as a mobile directable organism by its admiral, is a high achievement of the human intellect.
How is it done?
By discipline, by training, by knowledge, by energy, by devotion, by will; by the exercise of those mental, moral, and spiritual faculties that may be grouped under the one term "mind": the same power that co-ordinates and controls a still more complex machine, the organism of the human body.
Despite its relative crudeness, a fleet possesses, more fully than any other fruit of man's endeavor, the characteristics of an organism, defined by Webster as "an individual constituted to carry on the activities of life by means of parts or organs more or less separate in function, but mutually dependent." And though it must be true that no fleet can approximate the perfection of nature's organisms, nevertheless there is an analogy which may help us to see how a complex fleet of complex vessels has been slowly evolved from the simple galley fleets of earlier days; how its various parts may be mutually dependent yet severally independent; and how all must be made to work as one vast unit, and directed as one vast unit by the controlling mind toward "the end in view." The common idea is that an army consists of a number of soldiers, and a navy of a number of ships.

This idea is due to a failure to realize that soldiers and ships are merely instruments, and that they are useless instruments unless directed by a trained intelligence: that the first essential in an army and the first essential in a navy is mind, which first correctly estimates the situation, then makes wise plans to meet it, then carries out those plans; which organizes the men and designs the ships, and then directs the physical power exertable by the men and the ships toward "the end in view." Owing to the enormous mechanical power made available in ships by the floating properties of water, machinery is more used by navies than by armies; but this does not mean that machinery can take the place of men more successfully in navies than in armies, except in the sense that navies can use more mechanical power.
The abundant use of machines and instruments in navies does not mean that machinery and instruments can take the place of trained intelligence--but exactly the reverse.

Under the guidance of trained intelligence, a machine or instrument can perform wonders.

But it is not the machinery that does the wonders; it is the trained intelligence that devised the instrument or machine, and the trained intelligence that operates it.

Let the trained intelligence err, or sleep, and note the results that follow.