Encumbrance Table

Enc.   kg/lbs      Enc.   kg/lbs        Enc. tons 
 6    3.8/8        -1    100/220        -8   2.6   
 5½     5/12       -1½   120/264        -8½  3.2   
 5    6.3/14       -2    160/352        -9   3.8   
 4½   7.5/16       -2½   200/440        -9½  5.1   
 4     10/22       -3    240/528       -10   6.4   
 3½  12.5/26       -3½   320/704       -10½  7.6   
 3     15/33       -4    400/880       -11  10.2   
 2½    20/44       -4½   480/1056      -11½ 12.8   
 2     25/55       -5    640/1408      -12  15.4   
 1½    30/66       -5½   800/1760      -12½ 20.5   
 1     40/88       -6    960/2112      -13  25.6   
 ½     50/110      -6½  1280/2816      -13½ 30.7   
 0     60/132      -7   1600/3520      -14  40.9   
-½     80/176      -7½  1920/3224      -14½ 51.2