In this guide
  1. The short version
  2. What ACEP’s guidelines call for
  3. What it typically can’t do
  4. What people are actually seen for
  5. It isn’t free
  6. How to prepare (based on CDC advice)
  7. Sources
General information, not medical advice. This guide explains common options and official guidance. It can't account for your health, medicines or itinerary. Talk to your own doctor or pharmacist before your cruise. Medical disclaimer.

Most large cruise ships have a medical center staffed around the clock. Knowing what it is (and isn’t) helps you pack, plan and decide what insurance you need.

The short version

The CDC describes cruise ship medical centers as comparable to ambulatory care centers, roughly like an urgent care clinic. Some can provide hospital-level care or even dialysis, but they are not full hospitals (CDC Yellow Book: Cruise Ship Travel).

Also from the CDC:

  • About 95% of medical problems are managed onboard. The rest may require evacuation to a hospital ashore.
  • No government agency regulates shipboard medical practice. Most major cruise lines follow the guidelines of the American College of Emergency Physicians (ACEP).

What ACEP’s guidelines call for

ACEP’s Cruise Ship Health Care Guidelines (revised May 2026) apply to ships carrying more than 100 people. They set out what a well-equipped ship should have (ACEP guidelines, PDF). Highlights:

Staffing

  • At sea, at least one physician and one additional clinical provider readily available.
  • In port, at least one clinician on board.
  • Clinical staff with at least three years of post-graduate experience and certification in advanced life support, such as ACLS.

Facilities

  • At least one examination/stabilization room and one intensive care room.
  • At least one inpatient bed per 1,000 passengers and crew, and the ability to isolate patients.

Equipment and tests

  • Cardiac monitors, defibrillators (including an AED), an EKG machine, external pacing, a ventilator and oxygen.
  • Lab tests including blood counts, glucose, electrolytes, kidney function, troponin (a heart test), pregnancy, urinalysis, and rapid tests for flu, COVID-19 and norovirus, among others.
  • X-ray and point-of-care ultrasound (POCUS) capability, with at least one physician trained in POCUS (effective January 1, 2026).
  • A formulary of medicines that includes treatments for nausea and vertigo.

What it typically can’t do

ACEP’s equipment list does not include a CT scanner, an MRI or an operating room. In practice, conditions that need advanced imaging, surgery or specialist care usually mean transfer to a hospital ashore, at the next port or by evacuation. That is why the CDC advises cruisers to check that their insurance includes medical evacuation (CDC). See travel insurance vs. medical evacuation cover.

What people are actually seen for

According to the CDC, the most common diagnoses onboard are:

ProblemShare of visits
Respiratory illness30–40%
Slips, trips and falls12–18%
Gastrointestinal illness~10%
Seasickness~10%

Cardiovascular events are only about 3% of visits but account for about 80% of deaths onboard. Roughly half of patients seen are over 65 (CDC).

It isn’t free

The CDC notes that the cost of onboard medical care is generally not included in your fare, and over-the-counter medicines sold onboard can be more expensive than at home. Bills are usually added to your onboard account. See real cruise medical bills.

How to prepare (based on CDC advice)

  • Tell the cruise line in advance if you need dialysis, oxygen, a wheelchair or other accommodations.
  • Bring enough of your medicines for the whole trip plus extra, along with a health summary (conditions, medicines, allergies).
  • Bring essential items your doctor has prescribed, such as an epinephrine auto-injector.
  • Pregnancy: most cruise lines don’t allow boarding after the 24th week of pregnancy. Check your line’s policy.

Talk to your doctor before sailing if you have a heart or lung condition or any ongoing health concern.

Sources