Yes, but before maybe the 15th century they didn't really go on the really long voyages without frequent stops for resupply that lead to severe nutritional deficits. Maybe on accident or in unusual circumstances, but not as a standard modus operandi. Most of the time, people just sailed within sight of the coast.

Then it doesn't help navigation

Saily saily ship

It still means they can see the area within 60' of the boat as if it were daylight (but greyscale)

How does that help with navigation?

It helps them navigate around the ship

Archaelogical digs in Oceania have uncovered evidence of deep sea fishing (tuna bone carved fishhooks) from 40,000 years ago. We have been at sea a long time.

Gay darkroom vibes

Gay darkroom vibes

Off the turf, in the surf!

"The Boat Ramp of Durin, Lord of Mooria. Speak, matey, and enter. I, Narvi, made it."

Tbh, that's a rule that makes sense in context and something where I as a GM would make a house rule. Even the darkest night at sea is not nearly as dark as the mines, so I'd totally allow for darkvision to be range-less (or long-range) on the sea.

If I wanted that I'd just play Divinity 2.