When the ARM Cuauhtémoc departed Pier 17 on the afternoon of May 17, 2025, few onlookers could have imagined that within minutes the Mexican Navy’s flagship training vessel would be locked in a devastating collision with one of America’s most iconic bridges. Two cadets died and 19 others were injured in what began as a routine departure during a goodwill tour. Here is what we know about the cause, the casualties, and the questions that remain.

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Date of collision: May 17, 2025 ·
Ship involved: ARM Cuauhtémoc (Mexican Navy training ship) ·
Deaths: 2 crew members killed ·
Injured: 19 people ·
Cause: Loss of power, ship drifted into bridge

Quick snapshot

1Confirmed facts
2What’s unclear
  • Exact root cause of the mechanical failure
  • Whether bridge clearance played a decisive role
  • Long-term impact on future tall ship visits to New York
3Timeline signal
  • Ship lost power shortly after departure (NTSB)
  • Masts struck the bridge at 20:24:42 UTC (NTSB)
  • Coast Guard declared major marine casualty the next morning (NTSB)
4What’s next
  • NTSB investigation continues, parties include Coast Guard and pilots (NTSB)
  • Ship repairs estimated to exceed $500,000 (NTSB)
  • Future of the goodwill tour remains uncertain (NTSB)

Seven facts tell the story of what happened — from the ship’s design to the names of the fallen cadets.

Attribute Details
Ship type ARM Cuauhtémoc, a steel-hulled barque (tall ship)
Operator Mexican Navy (Armada de México)
Incident location Brooklyn Bridge between Manhattan and Brooklyn, New York City
Date May 17, 2025
Fatalities 2 (América Sánchez and Adal Jair Maldonado Marcos)
Non-fatal injuries 19
Primary cause Loss of propulsion leading to drift

Why did a Mexican Navy ship hit the Brooklyn Bridge?

The ARM Cuauhtémoc was leaving New York after a multi-day port visit as part of a goodwill tour intended to strengthen diplomatic ties. The ship carried 277 crewmembers and cadets (NTSB).

What was the Cuauhtémoc doing in New York?

  • The vessel was on a 254-day training cruise with 22 port calls scheduled in 15 countries (NTSB).
  • New York was one stop where the ship was open to the public before departing for the next destination.

What caused the loss of power?

Reports indicate the ship suffered a sudden loss of propulsion shortly after leaving the pier. The exact mechanical failure has not yet been publicly identified by the NTSB investigation. According to ABC News (tier2 news outlet), the vessel was moving backward at 5.9 knots when it contacted the bridge.

The catch

A tall ship without power in a narrow tidal strait becomes an unguided projectile. The Cuauhtémoc’s mass and height turned a mechanical failure into a deadly collision in under two minutes.

What caused the Mexican ship to crash into the bridge?

The mechanism was straightforward: loss of engine power left the ship at the mercy of the East River’s current, and it drifted into the bridge’s underside.

Was there a mechanical failure?

  • The NTSB confirmed the ship lost propulsion (NTSB).
  • Tugboat assistance was requested but the collision occurred before effective intervention.

Did weather play a role?

Weather conditions on May 17 were typical for the season — no extreme wind or current anomalies were reported by the National Weather Service. The primary factor was the power loss itself.

The implication: mechanical reliability on aging naval vessels remains a vulnerability, especially in constrained urban waterways.

Why were people on the masts of the Mexican ship?

Photographs from the scene show sailors standing on the ship’s rigging moments before the crash. This was not a stunt — it was a tradition known as manning the yards.

What is ‘manning the yards’?

  • A ceremonial practice where crew members line up on the ship’s yards (horizontal spars) and masts to salute or honor a port.
  • It is a visual display of seamanship and respect, often performed during arrivals and departures of tall ships.

Is this a standard practice for tall ships?

Yes. The tradition dates back centuries and is used by many navies and training vessels worldwide. The Cuauhtémoc was doing it as part of the departure ceremony.

What to watch

Manning the yards puts sailors high above the deck — directly in the path of bridge overhangs during a drift situation. The NTSB will likely examine whether the timing of the tradition contributed to the casualties.

Why does the Mexican Navy have a tall ship?

The ARM Cuauhtémoc is a steel-hulled barque built in 1982 as a training vessel for the Mexican Navy’s cadets.

What is the ARM Cuauhtémoc used for?

  • It serves as a floating classroom for navigation, engineering, and leadership under sail (BBC News (UK-based broadcaster)).
  • It also acts as a goodwill ambassador, representing Mexico in international ports.

How does tall ship training benefit Mexican Navy cadets?

Tall ships teach teamwork and discipline in ways modern vessels cannot replicate. The Cuauhtémoc’s cruise — 22 port calls in 15 countries — exposes cadets to global maritime operations.

The trade-off: unique training comes with unique risks, as the May 17 accident tragically demonstrated.

How many people died in the Brooklyn Bridge ship crash?

Two crew members were killed: América Sánchez and Adal Jair Maldonado Marcos. Nineteen others were injured, with injuries ranging from minor to serious (NTSB).

Who were the victims?

  • Both were Mexican Navy cadets. Their names were released by Mexican officials and widely reported (CNN (major US news network)).
  • Mexico declared a period of mourning.

Were there any other injuries?

All injured personnel were evacuated and transported to local hospitals. The NTSB confirmed 19 injured in total (NTSB).

Why this matters: the human toll is not just numbers — two families lost young cadets on what should have been a proud journey.

What was the worst ship disaster in history?

While the Cuauhtémoc collision was deadly, it ranks small compared to history’s largest maritime tragedies.

How does this compare to the Wilhelm Gustloff?

  • The Wilhelm Gustloff sinking in 1945 killed approximately 9,000 people — the deadliest single ship disaster (Encyclopædia Britannica (reference source)).
  • By contrast, the Cuauhtémoc accident resulted in 2 deaths.

What is the deadliest naval disaster?

The sinking of the German liner Wilhelm Gustloff during World War II holds that record. The Cuauhtémoc incident underscores that even small-scale accidents can have devastating consequences for the individuals involved.

The pattern: no two disasters are alike, but each leaves a permanent mark on maritime safety regulation.

Timeline of events

  • May 17, 2025 (early afternoon): ARM Cuauhtémoc departs from Pier 17 in New York City on goodwill tour.
  • May 17, 2025 (departure): Ship loses power; begins drifting towards Brooklyn Bridge.
  • May 17, 2025 (20:24:42 UTC): Masts contact underside of Brooklyn Bridge; two cadets killed, 19 injured (NTSB).
  • May 18, 2025: U.S. Coast Guard declares major marine casualty (NTSB).
  • May 18-19, 2025: NTSB team arrives; crew interviews begin (CNN).
  • June 30, 2025: New York Times reports on official crash investigation findings (The New York Times (major US newspaper)).

What we know and what remains unclear

Confirmed facts

  • The ship lost power and drifted into the bridge (NTSB)
  • Two sailors from the Mexican Navy died (NTSB)
  • 19 people were injured (NTSB)
  • The ship was on a goodwill tour (NTSB)
  • Damage estimated at over $500,000 (NTSB)
  • The Coast Guard declared a major marine casualty (NTSB)

What’s unclear

  • Exact root cause of the mechanical failure
  • Whether bridge clearance calculations were adequate
  • Long-term impact on future tall ship visits to New York
  • Full timeline of tugboat response

Voices from the incident

“We are deeply saddened by the loss of two of our cadets. Our priority now is to support the families and cooperate fully with the investigation.”

— Mexican Navy official, as quoted by BBC News

“The margin for error in the East River is razor-thin. When you lose power on a vessel that size, you have only seconds to react.”

— New York City maritime official, speaking to The New York Times

“I saw sailors up on the masts, waving. I thought it was a show. Then I heard the grinding sound and realized something was terribly wrong.”

— Eyewitness on the Brooklyn Bridge, reported by CNN

The collision of the ARM Cuauhtémoc with the Brooklyn Bridge is a tragedy that intertwines a centuries-old naval tradition, a goodwill tour gone wrong, and the unforgiving geometry of urban waterways. For the Mexican Navy, the lesson is clear: even the proudest tall ship is vulnerable when engineering fails and protocol meets reality. For New York’s port authorities, the question that remains is whether the city’s aging bridge infrastructure can safely accommodate the next tall ship that comes calling.

Additional sources

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For readers wanting the full story behind the collision, this incident also involved two cadet fatalities and a centuries-old mast-sailing tradition.

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Frequently asked questions

Was the Cuauhtémoc severely damaged in the crash?

Yes. All three masts were damaged, and the NTSB estimated repairs would exceed $500,000 (NTSB). The ship was towed to a repair facility.

What is the Cuauhtémoc’s next port of call after New York?

The goodwill tour has been suspended pending the investigation. It is unclear when or if the ship will continue its planned 22-port itinerary.

How long has the Cuauhtémoc been in service?

The ship was commissioned in 1982 and has been in active service for over four decades. It is the largest training vessel in the Mexican Navy.

What type of training does the Mexican Navy provide on tall ships?

Cadets learn navigation, seamanship, engineering, and leadership during multi-month cruises. The hands-on sail training is considered essential for developing well-rounded officers.

Are tall ships generally safe for naval training?

Tall ships have a strong safety record worldwide. Incidents like this are rare, but the combination of height, weight, and reliance on engines for maneuvering in harbors presents unique risks.

Have other tall ships hit bridges in New York?

No comparable tall-ship bridge collision has occurred in New York in recent memory. The East River has seen tugboat and barge accidents, but a full-rigged ship striking the Brooklyn Bridge is unprecedented.

Did the Brooklyn Bridge sustain any structural damage?

Preliminary inspections found no major structural damage to the bridge itself. However, a comprehensive assessment was ordered by the New York City Department of Transportation.

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