"MV. Umoja". Vessels. Marine Services Company Limited. Retrieved 25 June 2011.
"Home". Marine Services Company Limited. Archived from the original on 10 September 2011. Retrieved 26 June 2011.
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Cameron, Stuart (2004). "Umoja (1965)". Clyde-built Database. Archived from the original on 23 September 2006. Retrieved 22 May 2011.{{cite web}}: CS1 maint: unfit URL (link)
Cameron, Stuart (2004). "Uhuru (1965)". Clyde-built Database. Archived from the original on 23 September 2006. Retrieved 17 May 2011.{{cite web}}: CS1 maint: unfit URL (link)
"Home". Marine Services Company Limited. Archived from the original on 10 September 2011. Retrieved 26 June 2011.