Keeping sight of the basics

Article Abstract:

The emergence of geographical position systems (GPS) has made sailing much easier but it has nonetheless not made older instruments such as the sextant dispensable. The latter and other non-automated equipment are needed in cases of electronic failure which would render the GPS useless.

Sextant, Sextants

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From outer space to cyber space

Article Abstract:

Sailboat enthusiasts can now reliably forecast the weather through personal computers equipped with receivers for polar-orbiting weather satellite broadcasts. Polar-orbiting satellites are closer to the Earth and therefore provide a better view than geostationary satellites.

Microcomputers, Weather forecasting, Meteorological satellites

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Nurture your nicads

Article Abstract:

The rechargeability, high-power density and voltage constancy of nickel-cadmium (nicad) batteries make them highly useful in small power tools and hand-held radios. Tips on how to use them properly are presented.

Radios, Radio receivers, Nickel-cadmium batteries

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