Joint Typhoon Warning Center (1989). "Cyclone 21S Best Track". United States Navy. Archived from the original on June 6, 2011. Retrieved 27 January 2010.
Joint Typhoon Warning Center (1989). "Cyclone 21S Best Track". United States Navy. Archived from the original on June 6, 2011. Retrieved 27 January 2010.
news.google.com
"Ship breaks up". Herald-Journal. Associated Press. 24 May 1988. Retrieved 27 January 2010.