(2) For the purposes of this Rule the follo\ IIlg expressions ha"c the followlllg
meanings respectlvely:_
"Long international voyage" means an international voyage which h not
a short international voyage \Hhin the meaning of the Merchant ShipplIlg
(Safety onvention) Act 1949;
"Partially smooth waters" means, as respects any period specified In
Schedule I to these Rules. the waters of any of the areas specified In the
third column of that Schedule in relation to that period.
"Restricted period" means a period falling wholly \ilhlll the following
llmits:-
(a) from 1st April to 31s1 October, both dales inclusive; and
(b) between one hour before sunrise and one hour after sunset In the case
of shIps filled \-ith navigation Jights conformmg to the colli.�lon
regula lions and betv.:een sunrise and sunset in the cac;e of any olher
ships;