The Equipment.upc file in the Data UPCData UPCUnits folder holds the pieces of the radar and sonar devices (along with others), including the "cabinets", masts & antenna. Notice that the "cabinets" (aka: 'apps') will use a "ExternalLinkName3D=" setting set to NULL, since those 3D pieces are already part of the interior model, and do not change. However, the mast and antennas have the name of the device after that "ExternalLinkName3D=" line, and it points to the mast and antenna in the Sensors_sub_US files in the Data Library USSubParts folder. Those HAVE to match the Data Objects "Conning_SubName_0X file. In other words, the conning tower might require a radar mast that is "supported", ie: has bracing to hold it in place. Or it might require and "unsupported" mast, since the conning tower has integral support for the mast (such as the Balao, among others). Some of the boats change the mast type with the conning tower call, which is where a LOT of trouble comes in. This was the main reason CapnScurvy simplified the conning towers in initial releases of FotRSU by changing which towers were called for which boat. This did cause issue with the radio masts sometimes being set in the middle of hatches, or the cabling not matching the boat.
But it is not as easy as just that of course, since there is also the UpgradePacks.upc file in that Data UPCData UnitsData folder. It takes the "pieces" in the Equipment.upc and puts them into "packs" for installation on the boat. Add to all of that, the fact that some devices have mount points in both the boat AND the conning tower. Notice that there are regular "slots" in the body of the NSS_SubName.upc file for the equipment (and weapons and crew), and those will have the "Node" names with them, such as "R01", etc. Plus, the equipment UpgradePackSlot section below those for the "upgrades" that are in the NSS_SubName.upc file in the Data Submarine NSS_SubName folders. All of those have to be set correctly and match one another. Add further complexity with somewhat "matching" entries for some of the equipment in the "UnitParts#SubName.upc file, and all of its various "UnitPart#" sections for each of the conns in the Objects folder...
I'm not confused, just lost - and probably forgot something...
