PVSA rules for back-to-back cruises, explained

Updated June 12, 2026 · StayOnboard research

The Passenger Vessel Services Act of 1886 (46 U.S.C. § 55103) prohibits foreign-flagged ships — which means virtually every major cruise ship — from transporting passengers between two different U.S. ports. Because regulators treat a same-ship back-to-back as one continuous voyage, two individually legal cruises can combine into an illegal one. The rules in brief: a chain that starts and ends at the same U.S. port needs at least one foreign port call, near or distant; a chain between two different U.S. ports needs a distant foreign port — and Mexico, Canada, and most of the Caribbean don't count, though Aruba, Bonaire, and Curaçao do. Violations carry a $996-per-passenger penalty under 19 CFR § 4.80(b), so cruise lines cancel offending bookings rather than sail them.

What the PVSA is, and why it bites cruisers

The PVSA is a cabotage law: it reserves point-to-point passenger transport between U.S. ports for U.S.-built, U.S.-flagged, U.S.-crewed vessels. Nearly the entire modern cruise fleet flies foreign flags, so a foreign-flagged ship may carry you from a U.S. port and back to a U.S. port — it just may not function as domestic transportation from one U.S. city to another. For a single round-trip cruise this is invisible; the itinerary was designed around it. The danger appears precisely when you start chaining.

Your back-to-back is one voyage, not two

This is the rule that surprises everyone. When you stay aboard the same ship across consecutive sailings, compliance is judged on the combined journey: where you first embarked and where you finally walk off, with everything in between counted as one itinerary. A one-way cruise from Norfolk to Miami via Nassau is fine on its own — it begins where a prior leg ends, perhaps — but stitched into a chain that began in Norfolk, it becomes transportation from Norfolk to Miami, two different U.S. ports. If no distant foreign port appears anywhere in the chain, the combination is illegal, and the line's compliance team will cancel it when their screening catches it — occasionally weeks after you booked and paid.

Closed-loop chains: the easy case

If your chain starts and ends at the same U.S. port — Galveston out, Galveston home — you only need the combined voyage to call at any foreign port, near or distant. In practice almost every closed-loop chain qualifies effortlessly: Caribbean loops call at Cozumel or Nassau, Alaska round trips from Seattle call at Victoria, British Columbia. This is why stacking week-long round trips out of one homeport is the classic, worry-free way to build long stays at sea.

Open-jaw chains: the trap

If the chain starts at one U.S. port and ends at a different U.S. port — say Norfolk to Miami, or Seattle to San Diego — a near-foreign stop is no longer enough. The combined voyage must include a distant foreign port. This is where reasonable people get burned, because the distinction between "near" and "distant" is geographic law, not intuition.

Near vs. distant foreign ports

Near foreign ports are those in North America, Central America, Bermuda, and the West Indies: think Cozumel, Nassau, Grand Cayman, Victoria, Ensenada, Roatán, Grand Turk, St. Maarten. They satisfy a closed loop but can never legalize an open jaw. Distant foreign ports are everything else — and, crucially, that includes the ABC islands. Aruba, Bonaire, and Curaçao are distant foreign ports despite sitting in the southern Caribbean: they are explicitly carved out of the "nearby" definition. Cartagena, Colombia and other South American calls are distant as well. One Aruba or Curaçao stop anywhere in your chain is what makes a two-port U.S. open jaw legal.

The decision tree

1. 1Does the chain start or end outside the U.S.? If yes — a Barcelona round trip, a transatlantic ending in Southampton — the PVSA does not apply. Exempt.
2. 2Same U.S. port at both ends (closed loop)? Compliant if the combined voyage calls at any foreign port, near or distant. No foreign call at all → violation.
3. 3Different U.S. ports (open jaw)? Compliant only if a distant foreign port — the ABC islands, South America, or beyond — appears somewhere in the chain. Near-foreign stops alone → violation.

The $996 penalty — and who actually pays it

The penalty for unlawful transportation is currently $996 per passenger, assessed under 19 CFR § 4.80(b) — and it is levied against the carrier, not you. That detail explains everything about how lines behave: they will not absorb a four-figure fine per guest, so their systems screen linked bookings and their legal departments cancel violating combinations outright. The practical risk to you isn't a fine; it's a cancelled chain, a scrambled vacation, and a refund arriving long after your plans fell apart.

How StayOnboard handles the PVSA for you

Every chain our engine assembles is run through a PVSA validator before you see it. Compliant chains are labeled; international chains are marked exempt; and combinations that would violate the Act are blocked from results entirely — the search page simply tells you how many were hidden and links here to explain why. You cannot accidentally build an illegal chain on StayOnboard, which is exactly how a tool for long-term cruisers should work. From there, the usual advice applies: prefer closed loops, court the ABC islands when you want an open jaw, and read up on how turnaround day works before your first chain.