tanker captain, was published in 1903, although Davies had printed earlier versions himself. Including his calculations on the expansion and contraction of bulk oil, and other information for tanker officers, it went into multiple editions, and in 1915 The Petroleum World commented that it was "the standard book for computations and conversions." See also Hydrogen tanker List of gas carriers List of tankers T1 tanker T2 tanker T3 Tanker Notes References External links ship-photos.de: Private homepage of categorized ship photos including tankers of all kinds Ship types