IPA: /ˈʃoʊlər/
KK: /ˈʃoʊlər/
A person who works on a ship that travels along the coast, rather than going to distant places.
The shoaler navigated the coastal waters with great skill.
The word 'shoaler' originates from the word 'shoal' (from Old English *sceald*, meaning shallow) combined with the suffix '-er' (meaning a person who). A shoaler refers to a person who is associated with or works in shallow waters.
Think of someone who works in 'shallow' waters ('shoal') — the '-er' indicates that this person is involved in that environment.