Example

Text

• The determination of the position of the Titanic for the initial distress call after hitting an iceberg (S23) determined position 41°44′N 50°24′W (E94). [This was quickly determined via ‘dead reckoning’, i.e. based on the distance travelled since the previous known location, extrapolating a previous dead reckoning for 14 April 1912 20:00] (Halpern, 2011, Boxhall, 1962).
• The determination of the position of the Titanic by officer Joseph G. Boxhall after the initial distress signal was sent (S23) determined position 41°46′N 50°14′W (E94). [This was again determined via dead reckoning but extrapolating Boxhall's own determination shortly after 20:00, and revised the original position.] (Halpern, 2011, Boxhall, 1962).
• The calculation of the position of the Titanic by Robert Ballard's team after the Titanic shipwreck was found (S23) determined position 41°43′32′′N 49°56′49′′W (E94). [This was the position of the centre of the ‘boiler field’, part of the Titanic debris] (Ballard et al., 1987).
• Samuel Halpern’s 2007 determination of the position of the Titanic at the time of the collision (S23) determined position 41°45.5′N 49°55′W (E94). [This was based on the position of the boiler field and the ocean drift at the time.] (Halpern, 2007).

Language

en