systems that utilize devices lacking low voltage lockout, may benefit from a main under voltage lock out mechanism, which some use a MOSFET BMS to implement. solenoid relays are also common
On a boat, the best approach is to have a charge and discharge bus with separate BMS driven control. Depending on the battery schema (single dual, triple independent banks) a separate mission critical bus can be implemented. This can drive things like radio, nav gear, bilge pumps etc.
Ideally all charge and loads can be instructed to drop out via a digital com bus. But with so many DC native devices on a boat, this is not likely or reasonable. So the best we can hope for is the inverters and charge controllers to be BMS aware, so they can be throttled or disabled to prevent main bus disconnect.