cutters closing in a sharp V may be better.. I think those are for fences or Cu wire.

I'm in the pre-solder, where the cut will be, camp... but stainless cables are harder to do than Zn treated steel.


I have found a low temperature silver solder from welding supply shops ..


Given you rode to the nearest, Marina , and stainless steel is a common Marine use choice ,

check with the shops for the Boats.