Nothing serious, say a few drops of black or white in the torp color and using a post-it note to give a teenty-tiny feel of being made of separate pieces. Nothing elaborate, given the scale, obviously.
That, or use a post-it as a guide to scribe some circumfrencial lines with like a 6H pencil.
I know the kit does not give you ant detail to work with. Which is somewhat surprising, th torpedoes are the main armament of the vessel. Treating them like they are just something extruded like a CO2 bottle just seems inapt somehow.
And, not to the quaity of including the Soveit star of the ammo bozes for the Dshk MGs
This is a gorgeous build and excellently done. Just been opining on how to insure the torpedoes match is all.