1.To permit an extended forward view, off-centring of the radar picture shall be possible at all the range scales specified in Article 3.03(1).
Off-centring shall result exclusively in an extension of the forward view and shall be adjustable to at least 0,25, and at most 0,33, of the effective screen diameter.
2.In the range with extended forward view, the range circles shall be extended and the variable range marker shall be adjustable and readable up to the maximum of the displayed range.
3.A fixed forward extension of the range displayed in accordance with paragraph 1 is permitted provided that, for the central part of the picture, the effective diameter is not less than that specified in Article 4.03(1), and that the bearing scale is designed in such a way that a bearing can be taken in accordance with Article 3.08.
In that case the off-centring facility referred to in paragraph 1 shall not be required.