This seems like a really good reason to me. The International Maritime Organisation (of which there are 175 member states) made seaspeak the “official language of the seas” and seaspeak is based on English lexicon. The International Hydrographic Organization also seems to default to English.
That, combined with English being the modern global lingua franca, seems to make sense to default to English for oceans and seas. Of course, localisation makes complete sense using the name:XX tagging and it is up to renders to support this.