Fleet status -LRB- subsection Class NUMBER@1 -RRB- wnxx.net History The Class NUMBER@2 design was based on the ORGANIZATION@1 NUMBER@3 series -LRB- later TOPS Class NUMBER@4 -RRB- design .

It was based on the ORGANIZATION@1 NUMBER@3 series -LRB- later TOPS Class NUMBER@4 -RRB- .
