... the data logger, a left/right indicator, used when manual steering was employed, and an autopilot for automatic operation, with the surveyor presetting requirements. ... the British Geological Survey) required to carry out a bottom survey of the area around the proposed Severn Barrage in late 1980. ... Sample sites were based on a 1 km grid, position fixing being by triangulation, using a Motorola system.
Title | : | Oceanology |
Author | : | Society for Underwater Technology (SUT) |
Publisher | : | Springer Science & Business Media - 2012-12-06 |
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