In the International Code H means, ‘[ have a pilot on board’. It is a commonly¬made single-letter signal since a ship normally flies the H flag whenever she does have a pilot. In Morse code H is four dots. In bad visibility a pilot vessel may iden¬tify herself by sounding H on her whistle. Otherwise, this signal may not be made by sound. In the phonetic alphabet H is Hotel, pronounced the English way rather than the French.