Survey hatch
A survey hatch is a space that made it possible to measure a dry cargo ship as a protective deck . It was a shipbuilding option to reduce the measurement - and the associated taxes.
details
The installation of a survey hatch was due to the fact that ship surveying, in its historical development, distinguished between differently constructed and, as a result, differently measured rooms on ships. Depending on which parts of the ship were included in the gross measurement, a distinction was made between full-deckers, in which the full space under the survey deck was measured, and various forms of ships such as savings decks , protective decks and open decks , which have certain parts due to structural features were excluded from this survey.
The arrangement and nature of a survey hatch was precisely defined by law. Since survey hatches were allowed to be covered but not locked in a seaworthy manner, protective decks had a greater structural risk of filling up and sinking compared to full deckers. With the transition from the Oslo Convention of 1947 to the 2nd International Ship Surveying Convention (London 1969), survey hatches became obsolete.
Web links
Individual evidence
- ↑ H. Schlatter and F. Haslinger: Use of cargo hold and ship measurement. Double measurement of multi-deck ships as full decker and shelter decker. In: Weltwirtschaftliches Archiv , Volume 21, 1925, pp. 257-274.
- ↑ Johannes Müller, Martin Berger, Heinrich Kedenburg, Joseph Krauss, Joseph Krauss, Helmut Menz: Handbook for the ship's command : Shipping law, cargo, seamanship, stability of signaling and radio systems and other areas , ship science, Springer-Verlag 1962, p. 410.
- ↑ Helmers, Walter (Ed.): Müller-Krauß, Handbuch für die Schiffsführung , Volume 3, Seemannschaft und Schiffstechnik, Part B. Springer Verlag, Berlin 1980, ISBN 3-540-10357-0 , pp. 80-83.