This was on my Weeding cart due to low circulation, and upon closer inspection, I realized that despite the compelling details about whaling, sailing, and the history of shipping trade & occupations, this is so full of casual assumptions about the centrality of white experiences that I can't in good conscience leave it on the open shelves of our library.
People are referred to by their ethnic identity ("the Eskimo" "the Negro cook" etc.) only if they are not white. Although this nomenclature is probably "authentic" to the historical periods described, it is insulting to readers and could further stereotypes & bias that are hurtful to people of any identity.
An adult reading it aloud to a child could insert a phrase such as, "...back then many white people thought it was acceptable to talk like this & treat people like this, but it isn't" - or something along those lines. However, since there is no effective & appropriate way to suggest that in our catalog or in the book itself, I've decided to pull it from our collection.
Now our library has more than one copy for reference, research, & public use, but no child will stumble across these casual affronts by accident.
I have given it an extra star (above the lowest rating) because the realism of the descriptions of historical roles on ships is valuable, and the smaller drawings are expertly done.