"Rootsweb: http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=:...
sources:
1) Crossing The Ocean LDS British Mission Emigration Registers
1863-74 025,692 005-009 F3008 Anaheim Family History Lib
July 20, 1989
1867 June 21 Ship: Manhattan pg. 11
William Webb 36 Bootmaker @ C.T. Liston
Maldon, Essex
Martha 34 Wife
Fredrick 11
Lizzie 8
George 4
Annie 10
Heber Infant
Elijah White 18"
These ages match pretty well with other sources, but two major differences. Annie is listed as "10" instead of the 1 year ago that other sources mention.
Heber is listed as an "infant" instead of 5 years old as other sources.