engineering inspection regime onboard Training Support Vessel Squadron (TSVRON) vessels TSV-1 PREVAIL, TSV-3 HUNTER, TSV-4 NARRAGANSETT, and TSV-5 VINDICATOR currently homeported at JEB Little Creek. ... engineering inspection regime onboard Training Support Vessel Squadron (TSVRON) vessels TSV-1 PREVAIL, TSV-3 HUNTER, TSV-4 NARRAGANSETT, and TSV-5 VINDICATOR currently homeported at JEB Little Creek. The Training Support Vessels (TSV) are utilized to support Fleet training. The vessels are required to maintain certifications that maintenance is being accomplished and the ships are safe to operate.