I never sais I’m operating on an assumption that all Fed depts are inadequate; this is about both complementary and differing skill sets and priorities.

We need NYPD to have marine capabilities for myriad practical reasons. Bridge jumpers, accidental drownings, local crime investigations where perps involved the waterways? Local wins, and likely has a lower cost-per-investigation price than a Fed agency, who lack the relationships with other municipal resources to solve crimes, find a missing person, etc.

Ships registered to other countries in these waters? Large-scale rescues at sea? Fed agencies should handle with cooperation of NYPD Marine units.