The MV in MV photon means megavolt
mV
.mv was created in 1996.
MV Wickersham ended in 1974.
MV Havengore was created on 1956-02-04.
MV Lituya was created in 2004.
MV Transportation was created in 1975.
MV Tustumena was created in 1964.
MV Bartlett ended in 2003.
MV Bartlett was created in 1968.
MV LeConte was created in 1974.
MV Taku was created in 1963.