https://subseaworldnews.com/2013/06/10/dcn-divers-rescue-survivor-from-jascon-4-nigeria/
https://gcaptain.com/tugboat-jascon-sinks-heavy-weather/
http://www.nxtbook.com/naylor/ADCS/ADCS0513/index.php#/14
https://en.wikipedia.org/wiki/Aquanaut
https://www.huffpost.com/entry/harrison-okene-rescued-video_n_4377878
https://www.bbc.com/news/world-africa-22888828
https://www.bbc.co.uk/sounds/play/p01zgqfh
https://www.theguardian.com/world/2013/jun/12/nigeria-sailor-survive-air-pocket
https://www.telegraph.co.uk/news/worldnews/africaandindianocean/nigeria/10115919/Nigerian-cook-tells-how-he-survived-for-three-days-trapped-under-sunken-ship.html
https://www.reuters.com/article/us-nigeria-shipwreck/nigerian-cook-survives-two-days-under-sea-in-shipwreck-air-bubble-idUSBRE95B0M120130612
https://nationalpost.com/news/man-who-survived-three-days-at-bottom-of-atlantic-in-sunken-tugboat-describes-how-he-almost-missed-being-rescued
https://www.scubaboard.com/community/threads/the-jascon-4-rescue-video-3-days-at-30m-and-lived.470908/page-8
https://businessday.ng/news/article/chevron-contractor-loses-vessel-in-mishap/
https://www.emedicinehealth.com/decompression_syndromes_the_bends/article_em.htm
https://en.wikipedia.org/wiki/Saturation_diving