Oceanaut and Trained worker

Oceanaut noun - A skilled worker who can live in underwater installations and participate in scientific research.

Trained worker and oceanaut are semantically related. In some cases you can use "Trained worker" instead a noun "Oceanaut".

Trained worker noun - A worker who has acquired special skills.

Oceanaut and trained worker are semantically related. Sometimes you can replace term "Oceanaut" with "Trained worker", this terms are similar.