Sure, here’s a handful of snippets I found in a few old shipping registers. They’re not very detailed, but they give a rough idea of how long it took in the early 20th century. New York – Liverpool (steamship) — 10 days 5 hours (1905) Hamburg – New York (sloop) — 12 days 2 hours (1912) Sydney – Singapore (tanker) — 18 days 8 hours (1923) San Francisco – Tokyo (oil barge) — 20 days 12 hours (1931) The times can vary a lot because of weather, currents, and the ship’s speed. The logs I dug up are all from company ledgers that were later archived in port museums. If you’re looking for more precise data, the National Maritime Museum in Greenwich and the American Maritime Historical Society have digitized collections you might check out.