A Miami tugboat captain, Yusiel Lopez Insua, 46, has pleaded guilty to federal seaman’s manslaughter charges in relation to a tragic collision on Biscayne Bay that resulted in the deaths of three children. The incident occurred on July 28, 2025, when Insua was operating a 25-foot tugboat pushing a 108-foot construction debris barge.
Court records indicate that the vessel’s forward visibility was obstructed due to the presence of a deckhouse and crane. Compounding the situation, there was no designated lookout assigned, a fundamental requirement in maritime operations when visibility is limited. Reports reveal that Insua was simultaneously using his cellphone, which further compromised his ability to navigate the waters safely.
The Collision Details
During the tragic event, a stalled sailboat carrying a counselor and five children from a nearby sailing camp encountered difficulties as it lost wind. The sailboat became immobilized directly in the path of the approaching tug and barge. As Insua failed to spot the sailboat due to obstructed visibility and the absence of a lookout, the barge ran over the vessel, tragically trapping three children beneath it. While the counselor and two children managed to escape, three others drowned under the wreckage.
U.S. Attorney Jason A. Reding Quiñones condemned Insua’s oversight, emphasizing that “three children lost their lives in a tragedy that never should have happened.” He pointed out that the captain’s negligence in adhering to basic maritime safety protocols was a direct cause of the deadly accident.

Regulatory Response and Future Measures
Capt. Frank J. Florio, commander of the U.S. Coast Guard’s Sector Miami, expressed the need for heightened adherence to maritime safety standards. He stated, “The tragic loss of life in this case is a solemn reminder of why the U.S. Coast Guard stands the watch every day.” The Coast Guard’s dedication to ensuring vessel safety through inspections and outreach is therefore underscored by this incident.
Joshua Packer, special agent in charge of the U.S. Coast Guard Investigative Service’s Southeast Region, stressed the importance of cooperation among various agencies in resolving the case. He noted that collective efforts led to accountability in this tragic situation.
Insua is facing a maximum sentence of 10 years, with a decision on his sentencing pending before a federal judge, who will consider the U.S. Sentencing Guidelines and other factors.
The Operational Read
The tragic events of this incident serve as a critical lesson for maritime operators and crews about the necessity of adhering to safety regulations. The failure to assign lookouts and the constant threat of distractions, such as cellphone use while navigating, underline the importance of a thorough safety protocol. Ship operators must ensure crew training emphasizes situational awareness and the enforcement of lookout assignments. Moving forward, all stakeholders should prioritize risk assessments in busy waterways to prevent similar occurrences and enhance the safety of all mariners, particularly in areas frequented by recreational vessels.


