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Articles

1977: Vol. LIV, No. 2

Surveying in the Gironde

Submitted
August 7, 2015
Published
2015-07-09

Abstract

In 1970, when it was found that the existing sounding equipments could no longer keep up with requirements, the Port Autonome de Bordeaux started a complete renovation and modernisation of its survey arrangements, which was carried out under the sponsorship of the Ministry of Works and with the valuable collaboration of the French Lighthouse and Buoyage Service (Service des Phareset Balises). The concept of all the tidal, telemetric, nautical and electronic equipment described in this paper for the overall sounding plan followed two main principles : a) Of the three new sounding vessels, each should be best fitted for one of the types of waterway in the area (offshore, estuary and river), while the vessels should still be able to sound in formation together in most of the survey zones. b) The largest vessel should be capable of real-time data transmission to the computer centre so that the fair sheet can be drawn immediately after completion of the sounding runs.