Petty Officer 2nd Class Patrick O'Sullivan

Petty Officer 2nd Class Patrick O'Sullivan

Sequim grad is nuclear chemist in Navy’s ‘Silent Service’

SILVERDALE — A Sequim High School graduate moved from school books to nuclear submarine maintenance as a member of the Navy’s “Silent Service.”

Petty Officer 2nd Class Patrick O’Sullivan, who graduated from Sequim High in 2007, serves aboard the USS Louisiana as a nuclear reactor chemist.

“I enjoy working with chemistry and being able to take a sample and describe it to people and help them understand it,” O’Sullivan said.

The Louisiana is one of the Navy’s 14 Ohio-class ballistic missile submarines, also referred to as “boomers,” that patrol the world’s oceans for months at a time.

The boomers can carry up to 24 submarine-launched ballistic missiles — each containing multiple, independently targeted warheads — and act as undetectable launch platforms anywhere in the world’s oceans.

Together with land-based intercontinental ballistic missiles and strategic bombers, the Navy’s Ohio-class submarines are part of the nation’s strategic nuclear deterrence triad.

The Louisiana is based at Naval Base Kitsap in Silverdale.

In addition to USS Louisiana, seven other Ohio-class ballistic missile submarines are based in Kitsap County, along with three Seawolf-class submarines and two Ohio-class guided-missile submarines that are all assigned to the U.S. Pacific Fleet.

Nuclear duties

As a nuclear-trained machinist’s mate, O’Sullivan performs duties in nuclear propulsion plants such as operating reactor control, propulsion and power generation systems.

And as a sailor with numerous responsibilities, O’Sullivan said he is learning about himself as a leader, sailor and a person.

“Being in the Navy has given me a higher sense of how to organize and manage my priorities,” he said.

“I’ve also developed better study habits, [and] I like that I get to learn a lot about things I wouldn’t have otherwise.”

Additionally, the job “has given me opportunities to advance and given me [unique] talents,” he said.

“Also, being able to operate a nuclear reactor is pretty cool.”

Because of the demanding nature of service aboard submarines, sailors such as O’Sullivan are accepted only after rigorous testing and observation that can last several months, the Navy said.

O’Sullivan successfully completed basic recruit training and applied for the Navy’s Nuclear Field program.

As a program candidate, he attended “A” School in Charleston, S.C., to receive technical training.

He then attended Nuclear Power School, also in Charleston, where he learned theory and practical application of nuclear physics and reactor engineering.

Next, he began prototype training with one of two nuclear power training units.

Upon successful completion of the courses, he was designated as a nuclear propulsion plant operator.

Finally, he volunteered for submarine service and was assigned to the Louisiana after being granted security clearance.

In the military, all classified information is divided into one of three categories: “confidential,” “secret” and “top-secret.”

Leaking such information is deemed to pose a threat to national security.

77 days at sea

Boomers are specifically designed for extended nuclear deterrent patrols.

The Ohio-class design allows the submarines to operate for 15 or more years between major overhauls.

On average, the submarines spend 77 days at sea followed by 35 days in port for maintenance.

Due to the extended tours, each boomer has two crews, Blue and Gold, that alternate manning the submarines and taking them on patrol.

Gold Crew

O’Sullivan serves on the Gold Crew.

The two-crew system maximizes the submarines’ strategic availability, reduces the number of vessels required to meet strategic requirements and allows for proper crew training, readiness and morale, according to Navy officials.

With about 15 officers and 140 enlisted in the submarine’s company, jobs are highly varied — “everything from washing dishes and preparing meals to handling weaponry and maintaining the propulsion system,” according to the Navy.

O’Sullivan said he is proud of his work.

“The most rewarding thing about serving in the Navy is the pride in serving my country and knowing the sacrifices you make are appreciated,” he said.

________

Sequim-Dungeness Valley Editor Chris McDaniel can be reached at 360-681-2390, ext. 5052, or cmcdaniel@peninsuladailynews.com.

Lt. j.g. Jennifer Cunningham, Navy Office of Community Outreach, contributed to this report.

More in News

Mark Gregson.
Interim hospital CEO praises partnership, legacy

Gregson says goal is to solidify pact with UW Medicine in coming months

Jefferson County Auditor Brenda Huntingford, right, watches as clerk Ronnie Swafford loads a stack of ballots that were delivered from the post office on Tuesday into a machine that checks for signatures. The special election has measures affecting the Port Townsend and Brinnon school districts as well as East Jefferson Fire Rescue. (Steve Mullensky/for Peninsula Daily News)
Jefferson County voters supporting school district measures, fire lid lifts

Port Townsend approving 20-year, $99.25 million construction bond

Port of Port Townsend Harbormaster Kristian Ferrero, right, watches as a crew from Seattle Global Diving and Salvage work to remove a derelict catamaran that was stuck in the sand for weeks on a beach at the Water Front Inn on Washington Street in Port Townsend. The boat had been sunk off of Indian Point for weeks before a series of storms pushed it to this beach last week. (Steve Mullensky/for Peninsula Daily News)
Derelict boat removal

Port of Port Townsend Harbormaster Kristian Ferrero, right, watches as a crew… Continue reading

Rob Birman has served as Centrum’s executive director for 14 years. When the arts nonprofit completes its search for its next leader, Birman will transition into a role focused on capital fundraising and overseeing capital projects for buildings Centrum oversees. (Centrum)
Centrum signs lease to remain at Fort Worden for next 35 years

Executive director will transition into role focused on fundraising

Clallam approves contracts with several agencies

Funding for reimbursement, equipment replacement

Mark and Linda Secord have been named Marrowstone Island Citizens of the Year for 2025.
Secords named Marrowstone Island citizens of year

Mark and Linda Secord have been chosen as Marrowstone… Continue reading

The members of the 2026 Rhody Festival royalty are, from left, Princess Payton Frank, Queen Lorelei Turner and 2025 Queen Taylor Frank. The 2026 queen was crowned by the outgoing queen during a ceremony at Chimacum High School on Saturday. (Steve Mullensky/for Peninsula Daily News)
Rhody coronation

The members of the 2026 Rhody Festival royalty are, from left, Princess… Continue reading

Jefferson considering new site for solid waste

Commissioners direct further exploration

Public feedback still shaping Clallam ordinance on RV usage

Community Development department set to move sections of its proposal

Jen Colmore, Sequim Food Bank’s community engagement coordinator, has been hired as the executive director. She will start in her new role after outgoing director Andra Smith starts as executive director of the Washington Food Coalition later this month. (Sequim Food Bank)
Sequim Food Bank hires new executive director

Sequim organization tabs engagement coordinator

Sara Nicholls, executive director of the Dungeness Valley Health and Wellness Clinic, also known as the Sequim Free Clinic, inspects food items that are free to any patient who needs them. Soroptimist International of Sequim sponsors the food pantry, she said. (Austin James)
Sequim Free Clinic to celebrate 25th year

Volunteer-driven nonprofit will reach quarter-century mark in October

Weekly flight operations scheduled

Field carrier landing practice operations will take place for aircraft… Continue reading