The following text is taken from Appendix A - Details of Illustrations:
This figure is based upon another illustration from 'Engineering' dated July 15th 1898 and labelled figures 9,10 and 11. Although only one chain path is shown it is unlikely that any of the other chain paths at the sea entrance of the lock would be different to any large degree.
This particular chain path is the one at the north-west side of the sea entrance. Perhaps one note of caution should be mentioned and that is that there appears to be little space between gates for chains to pass up through the side wall at the optimum angle.
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