Regulation 27 Display sizes
A radar installation required to be provided which is or was installed onboard a ship on or after 1st September 1984 shall provide a relative plan display having an effective diameter, without external magnification, of not less than:
(a)
180 millimetresf1 on ships of 500 tons or over but less than 1600 tons;
(b)
250 millimetres on ships of 1600 tons or over but less than 10,000 tons;
(c)
340 millimetres in the case of one radar installation and 250 millimetres in the case of the other on ships of 10,000 tons or over.
Annotations
Footnotes
- f1
-
Display diameters of 180, 250 and 340 millimetres correspond respectively to 9, 12 and 16 inch cathode ray tubes.