BBC Radio 4 has produced two radio adaptations of the book. In September 1980, a two-hour dramatised version starred Richard Pasco as Ericson and Michael N. Harbour as Lockhart, and with Terry Molloy as the coxswain of "Saltash". Recording took place with the assistance of the captain and ship's company of and the captain of . The narrator was Martin Muncaster. In March 2012, another two-hour version, starred Gwilym Lee as Lockhart and Jonathan Coy as Ericson. Dramatised by John Fletcher and directed by Marc Beeby, this adaptation went on to win 'Best Use of Sound in an Audio Drama' in the BBC Audio Drama Awards 2013.