
@change oceanography

> Voyages of exploration were the earliest in the history of studying the ocean.
Google Translate translates the Japanese as:
The history of ocean research was pioneered by voyages of exploration.
I think a still more natural sentence would be:
{Oceanography|Ocean research} was pioneered by voyages of exploration.
or
Voyages of exploration were the first in the history of {oceanography|ocean research}.
which I'll add as new sentences. However, I don't think this sentence is wrong.