Talk:Oil tanker

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thread_title:  External links modified 

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I have just modified 6 external links on Oil tanker. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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thread_title:  External links modified 

message: "Second only to pipelines in terms of efficiency," This reference is awfully ambiguous.  Tanker transport is at least an order of magnitude cheaper than pipe line transport.  For instance, using $35 000/day for an AFRAmax carrier, that's 100 000 t carried 750 km, or 4.5 cents per barrel.  An equivalent pipeline tariff would be in dollars per barrel.
187.143.80.250 (talk) 07:34, 18 April 2018 (UTC)
thread_title:  Cost of transport of oil — distance? 

message: The following Wikimedia Commons file used on this page or its Wikidata item has been nominated for deletion:
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thread_title:  A Commons file used on this page or its Wikidata item has been nominated for deletion 

message: Subsection #History#Modern oil tankers para.3 (The first successful oil tanker) states tht the Zoroaster had "21 vertical watertight compartments for extra buoyancy".
This was not written by a mariner! (who would have referred to bulkheads rather than compartments).  More importantly, bulkheads add weight - and thus reduce buoyancy.  Our existing text lacks credibility - needs fixing.
The point of partitioning a ship, or a tank, is to reduce floodability - that is, to protect buoyancy in case of hull damage (but not to provide any "extra"!) - or to limit the free surface effect.  Both are safety considerations; that makes them of particular interest in relation to the development history of oil tankers.  This point about the Zoroaster's partitioned design is worth getting right.
Fixing all this is difficult without access to sources.  If the source cited (Tolf, Robert W. (1976). "4: The World's First Oil Tankers". The Russian Rockefellers: The Saga of the Nobel Family and the Russian Oil Industry. Hoover Press. ISBN 0-8179-6581-5) is in fact sound, the existing phrasing can be corrected without difficulty - though material about the different safety issues should be added if at all possible.  If that source is itself defective - not uncommon in books published by non-mariners! - the article can't be corrected without getting away from the source it cites.  I'm unable to check Tolf, and don't have any alternative sources.  Anyone else better placed? 2A04:B2C2:405:EB00:70A9:DF0D:6D77:5314 (talk) 06:59, 20 August 2023 (UTC)
thread_title:  Compartmented design?  To add buoyancy??