Navigation and Seamanship

4.2.7. Additional signals

Additional signals:

(i) Signals for trawlers:

When shooting their nets, 2 white lights in a vertical position, when hauling their nets one white over one red light in a vertical time.

(ii) In pair trawling or bull trawling by night; a search light, directed forward in direction of other vessels.

(iii) Singles for purse seines:

Two yellow lights in a vertical line shall flash alternative.