The City of Puerto Vallarta is the government seat of the Municipality of Puerto Vallarta which comprises the city as well as population centers outside of the city extending from Boca de Tomatlan tomatlÃ¡n to The nayarit. border
1 Powered boats less than 7m in length and whose maximum speed does not exceed 7 knots, may show an all-round white light instead of sidelights. If practical, these ships should also show sidelights.  Powered boats must show sidelights and either an all-round white light or a stern and masthead light.
Which vessel should display yellow lights when towing? How can you make the distinction as to whether a vessel is underway or making way from the lights it displays at night?     The lights a vessel displays at night define a lot about the vessel, length, aspect etc.