The base itself is an inert collection of inert materials; these materials can be useful to the operations of a fleet that bases on it; but if the fleet is operating in the Pacific, a base in the Atlantic is not immediately valuable to it, no matter what strength and resources the base may have.
The functions of a home base are therefore those that the name "home" implies; to start the fleet out on its mission, to receive it on its return, and to offer rest, refuge, and succor in times of accident and distress.
The functions of a distant base concern more nearly the operations of a prolonged campaign.

A distant base is more difficult to construct as a rule; largely because the fact of its distance renders engineering operations difficult and because the very excellence of its position as an outpost makes it vulnerable to direct attack and often to a concentration of attacks coming from different directions.
If naval operations are to be conducted at considerable distance from home, say in the Caribbean Sea, distant bases are necessary, since without them, the fleet will operate under a serious handicap.
Under some conditions, a fleet operating in the Caribbean without a base there, against an enemy that had established a satisfactory base, might have its normal fighting efficiency reduced 50 per cent, or even more.

A fleet is not a motionless fort, whose strength lies only in its ability to fire guns and withstand punishment; a fleet is a very live personality, whose ability to fight well--like a pugilist's--depends largely on its ability to move quickly and accurately, and to think quickly and accurately.

The best pugilists are not usually the strongest men, though physical strength is an important factor; the best pugilists are men who are quick as well as strong, who see an advantage or a danger quickly, and whose eyes, nerves, and muscles act together swiftly and harmoniously.

A modern fleet, filled with high-grade machinery of all kinds, manned by highly trained men to operate it, and commanded by officers fit to be intrusted with such responsibilities, is a highly developed and sensitive organism--and, like all highly developed and sensitive organisms, exists in a state of what may be called "unstable equilibrium." As pointed out in previous pages, the high skill needed to perform well any very difficult task can be gained only by great practice in overcoming difficulties and eliminating errors of many kinds; and when the difficulties are manifold and great, a comparatively small increase or decrease in the overcoming of them makes a great difference in the results attained.