[PSUBS-MAILIST] vessel prefix for personal/recreational submarines

[Jon Wallace via Personal_Submersibles]

I'm interested in applying a "ship prefix" to the name of my vessel and would like to hear opinions on something we might adopt as a group, eventually creating a standard.  Existing, prefixes that might apply:
MV - Motor VesselMS - Motor ShipRV - Research Vessel (for some of you)DSV - Deep Submergence Vessel, not sure how "Deep" is defined, but most of our subs surpass normal diving range so might qualify for this designation.
Some potential new designations:PSV - Personal Submergence VesselRSV - Recreational Submergence VesselSMV - Submerged Motor Vessel
Others? 
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