Navy: Human error led to submarine collision in 2012

NORFOLK, Va. — The primary reason a submarine and a guided-missile cruiser collided off the coast of Florida during a 2012 training exercise was human error and poor teamwork by the submarine’s watch team, according to a Navy investigation released on Tuesday.

The investigation details the events leading up to the collision between the Norfolk-based USS San Jacinto and the Los Angeles-class attack submarine USS Montpelier, which were participating in an anti-submarine warfare exercise in the Jacksonville, Florida, operating area as part of an aircraft carrier’s pre-deployment training.

The San Jacinto was one of two ships that was supposed to protect the USS Harry S. Truman as part of the exercise, while the Montpelier was playing the role of aggressor. However, the report also noted that the San Jacinto wasn’t fully focused on the anti-submarine warfare exercise because it was distracted with higher-priority carrier flight operations, among other things.

The Navy released the redacted report in response to a Freedom of Information Act request filed by news outlets more than a year ago.

The investigation also faulted the Montpelier’s commanding officer, Cmdr. Thomas Winter, for failing to follow basic established periscope depth operating procedures. The depth the submarine was operating at was redacted, but the report noted that Winter ordered that it go to “emergency deep” after watch standers realized how close it was to the San Jacinto. Winter was relieved of his duties following the collision due to a loss of confidence in his ability to command.

The report also faulted the Navy’s chain of command for failing to properly plan the exercise.

“The number one priority of any exercise is safety. This must be ingrained in our naval force. Regrettably, it is not,” wrote Adm. Bill Gortney, commander of U.S. Fleet Forces Command, in endorsing the investigation’s findings. “We must ensure the lessons learned from this accident are implanted into our officers and sailors. We will not repeat this failure.”

No injuries occurred as a result of the collision, but ship repairs were necessary. The report said both ships suffered extensive damage. The Montpelier’s rudder was dislodged as a result of the collision, but its propulsion plant was unaffected. The San Jacinto’s sonar dome had extensive metal deformation, tears and flapping metal with exposed wiring.

The report estimated that repairs for both ships could exceed $43 million.

Talk to us

> Give us your news tips.

> Send us a letter to the editor.

> More Herald contact information.

More in Local News

A firefighter stands in silence before a panel bearing the names of L. John Regelbrugge and Kris Regelbrugge during the ten-year remembrance of the Oso landslide on Friday, March 22, 2024, at the Oso Landslide Memorial in Oso, Washington. (Ryan Berry / The Herald)
‘Flood of emotions’ as Oso Landslide Memorial opens on 10th anniversary

Friends, family and first responders held a moment of silence at 10:37 a.m. at the new 2-acre memorial off Highway 530.

Julie Petersen poses for a photo with images of her sister Christina Jefferds and Jefferds’ grand daughter Sanoah Violet Huestis next to a memorial for Sanoah at her home on March 20, 2024 in Arlington, Washington. Peterson wears her sister’s favorite color and one of her bangles. (Annie Barker / The Herald)
‘It just all came down’: An oral history of the Oso mudslide

Ten years later, The Daily Herald spoke with dozens of people — first responders, family, survivors — touched by the deadliest slide in U.S. history.

Victims of the Oso mudslide on March 22, 2014. (Courtesy photos)
Remembering the 43 lives lost in the Oso mudslide

The slide wiped out a neighborhood along Highway 530 in 2014. “Even though you feel like you’re alone in your grief, you’re really not.”

Director Lucia Schmit, right, and Deputy Director Dara Salmon inside the Snohomish County Department of Emergency Management on Friday, March 8, 2024, in Everett, Washington. (Ryan Berry / The Herald)
How Oso slide changed local emergency response ‘on virtually every level’

“In a decade, we have just really, really advanced,” through hard-earned lessons applied to the pandemic, floods and opioids.

Ron and Gail Thompson at their home on Monday, March 4, 2024 in Oso, Washington. (Olivia Vanni / The Herald)
In shadow of scarred Oso hillside, mudslide’s wounds still feel fresh

Locals reflected on living with grief and finding meaning in the wake of a catastrophe “nothing like you can ever imagine” in 2014.

Lynnwood police respond to a collision on highway 99 at 176 street SW. (Photo provided by Lynnwood Police)
Southbound lanes on Highway 99 reopen after crash

The crash, on Highway 99 at 176th Street SW, blocked traffic for over an hour. Traffic was diverted to 168th Street SW.

The view of Mountain Loop Mine out the window of a second floor classroom at Fairmount Elementary on Wednesday, Jan. 10, 2024 in Everett, Washington. (Olivia Vanni / The Herald)
County: Everett mining yard violated order to halt work next to school

At least 10 reports accused OMA Construction of violating a stop-work order next to Fairmount Elementary. A judge will hear the case.

Imagine Children's Museum's incoming CEO, Elizabeth "Elee" Wood. (Photo provided by Imagine Children's Museum)
Imagine Children’s Museum in Everett to welcome new CEO

Nancy Johnson, who has led Imagine Children’s Museum in Everett for 25 years, will retire in June.

Kelli Littlejohn, who was 11 when her older sister Melissa Lee was murdered, speaks to a group of investigators and deputies to thank them for bringing closure to her family after over 30 years on Thursday, March 28, 2024, at Snohomish County Superior Court in Everett, Washington. (Ryan Berry / The Herald)
‘She can rest in peace’: Jury convicts Bothell man in 1993 killing

Even after police arrested Alan Dean in 2020, it was unclear if he would stand trial. He was convicted Thursday in the murder of Melissa Lee, 15.

Ariel Garcia, 4, was last seen Wednesday morning in an apartment in the 4800 block of Vesper Dr. (Photo provided by Everett Police)
Search underway to find missing Everett child, 4

Ariel Garcia was last seen Wednesday morning at an apartment in the 4800 block of Vesper Drive.

The rezoned property, seen here from the Hillside Vista luxury development, is surrounded on two sides by modern neighborhoods Monday, March 25, 2024, in Lake Stevens, Washington. (Ryan Berry / The Herald)
Despite petition, Lake Stevens OKs rezone for new 96-home development

The change faced resistance from some residents, who worried about the effects of more density in the neighborhood.

Rep. Suzan DelBene, left, introduces Xichitl Torres Small, center, Undersecretary for Rural Development with the U.S. Department of Agriculture during a talk at Thomas Family Farms on Monday, April 3, 2023, in Snohomish, Washington. (Olivia Vanni / The Herald)
Under new federal program, Washingtonians can file taxes for free

At a press conference Wednesday, U.S. Rep. Suzan DelBene called the Direct File program safe, easy and secure.

Support local journalism

If you value local news, make a gift now to support the trusted journalism you get in The Daily Herald. Donations processed in this system are not tax deductible.