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A proprietary inverted bow design, developed by Ulstein, in which the stem is sloped backwards so the bow volume is carried low and forward. It is intended to give softer motions and reduced slamming and speed loss when meeting head seas, and is used on offshore and specialised vessels.

International standard of the CCITT for packet switching

A CCITT recommendation designed to facilitate international message and information exchange between subscribers of computer based store-and- forward services and office information systems in association with public and private data networks.

The CCITT now ITU recommendations (ISO9594) for the structure of directories for the maintenance of addresses used in electronic mail.

High frequency electromagnetic ray of short wave-length, capable of penetrating most solid substances.