The war lasted 27 years, partly because Athens (a naval power) and Sparta (a land-based military power) found it difficult to come to grips with each other.

Also known as slow-speed, or traditionally oil engines, the largest diesel engines are primarily used to power ships, although there are a few land-based power generation units as well.

The Chinese military is in the process of transforming itself from a land-based power, centered on a vast ground force, to a smaller, mobile, high-tech military eventually capable of mounting limited operations beyond its coastal borders.

Sparta and its allies, with the exception of Corinth, were almost exclusively land-based powers, able to summon large land armies which were very nearly unbeatable (thanks to the legendary Spartan forces).

Control of the sea is vital for America but of little importance to a land-based power like the Soviet Union.

Indeed, the General Secretary's proposal for a freeze and subsequent reduction in air and naval deployments throughout northeast Asia makes strategic sense for the Soviet Union, a land-based power with 57 divisions of troops in the Far East.

The source for land-based power may be grid power from an electric utility company, but also possibly an external remote generator.

Despite the attempts to counter increasingly heavy ships, ramming tactics were superseded in the last centuries BC by the Macedonians and Romans who were primarily land-based powers.

The Delian League (hereafter 'Athenians') were primarily a naval powers, whereas the Peloponnesian League (hereafter 'Spartans') consisted of primarily land-based powers.

Beginning in the 1980s, the PLA tried to transform itself from a land-based power, centred on a vast ground force, to a smaller, mobile, high-tech one capable of mounting operations beyond its borders.