Just to emphasise what I keep saying, it is an ABP requirement to carry VHF and to keep at least a listening watch while on passage. It is not just a "nice to have", and if you are fitted with a radio it is rather silly not to be properly certificated to operate it if necessary, not just monitor. The course is not difficult and inexpensive and can be done within one day. As far as ships moving on the Trent is concerned, there are not as many as there used to be but occasional movements can still catch you out, especially between Keadby and Trent Falls, and there are still the occasional commercial barge movements which, compared to a narrow boat, can also be classed as small ships and care must be taken when meeting them.
The Trent is perfectly OK if suitable care is taken and it is treated with respect, but both the Trent and the Lower Yorkshire Ouse up to Goole are still places where you need to be extra vigilant, and certainly the boat must be capable in operating safely in a tidal river.
Howard