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Hydrographic Requirements for Modern Shipping

Published online by Cambridge University Press:  21 October 2009

J.-N. Pasquay
J.-N. Pasquay
Affiliation:
(Service Hydrographique et Océ;anographique de la Marine Française)
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Extract

Until 1950 the largest ships of the merchant fleet and the major warships had the same draught, about 12 m. Hydrographic offices concentrated their efforts on those areas likely to contain hazards to such vessels, that is to say the areas extending from the shallow waters to the 20 m contour line. The maximum draught of warships has been stable whereas the draught of merchant vessels increased considerably up to 30 m in recent years. A VLCC may risk grounding after having crossed the 30 m line or even the 40 m line. Nowadays, the part of the continental shelf which is best known is the part in which the largest vessels are unable to operate.

Type
Research Article
Information
The Journal of Navigation , Volume 39 , Issue 3 , September 1986 , pp. 341 - 348
Copyright
Copyright © The Royal Institute of Navigation 1986

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References

REFERENCES

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