The Hebrew word for sailor, appearing already in Biblical Hebrew, is מַלָּח listen and repeat.
הַמַּלָּחִים עוֹבְדִים עַל הַסְּפִינָה.
The sailors are working on the ship.
With an ah-AH vowel sequence and an emphasized second root letter, מַלָּח follows the sound pattern of the names of other professionals, such as טַבָּח listen and repeat meaning butcher and נַגָּר listen and repeat meaning carpenter.
Don't confuse מלח with ְמַלְאָך listen and repeat meaning angel, or in Biblical Hebrew, also messenger - though the two words sound alike in today's pronunciation.
And don't confuse מַלָּח with מֶלַח listen and repeat meaning salt - though the words are spelled the same way.
A synonym for מַלָּח is יַמַּאי listen and repeat, derived from the word for sea, יָם listen and repeat.