Yes.
Locate the file NPT_Vosper72.sns (... data\sea\NPT_Vosper72), open it with a text editor, find [Sensor 2] and [Sensor 3], replace the entries following LinkName= by NULL.
The desired result should be:
[Sensor 2]
NodeName=H01
LinkName=NULL
StartDate=19380101
EndDate=19451231
[Sensor 3]
NodeName=N01
LinkName=NULL
StartDate=19380101
EndDate=19451231
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