Improvements relating to bathythermographs or the like.

摘要

A bathythermograph or other instrument for measuring the temperature or some other characteristic of water (e.g. salinity) as a function of depth which comprises a probe for transmitting optical signals over an optical fibre arranged to be unwound from spool means as the instrument is dropped or released into the water to receiving equipment either directly or via further transmitting equipment (e.g. radio transmitting equipment) as the probe moves substantially vertically through the water to provide at the receiving equipment signal data from which a temperature or other water characteristic versus depth profile can be calculated.