Lessons From Five Years on a Nuclear Submarine That Still Shape How I Work

I spent five years on a nuclear submarine.

That’s not something I mention often.

I work in tech — a space that tends to skew heavily left-leaning and, at times, openly hostile toward the military. Because of that, I usually leave this part of my background out of conversations. It’s easier. It avoids awkward silences, assumptions, or debates I’m not interested in having.

But the truth is, some of the most durable lessons I carry into my work today came from those years underwater. Not from ideology or politics — but from operating in an environment where mistakes had consequences and standards were non-negotiable.

Appearance Is a Signal

On a submarine, appearance isn’t about ego or style. It’s a signal.

Being appropriately dressed shows respect — for the mission, for the people around you, and for the standards you’re expected to uphold. The same went for your workspace and your tools. If you looked careless, people assumed your work would be careless too.

That assumption wasn’t personal. It was practical.

In civilian workplaces, we like to pretend appearance doesn’t matter. But it does. Your product, your writing, your presentations, your UI — these are all forms of appearance. They tell people whether you take your work seriously before you ever explain it.

Details Reveal How Someone Thinks

Life on a submarine trains you to obsess over details.

Spelling. Formatting. Procedures. Timeliness.

Not because anyone enjoys being pedantic, but because details are predictive. If someone cuts corners on the small things, they will almost certainly cut corners when it matters more.

In high-risk environments, small mistakes don’t stay small for long. They compound. They cascade. And eventually, they surface as major failures.

That lesson translates cleanly to knowledge work. People who reliably get the details right tend to be the same people you can trust with larger responsibilities.

Hierarchy Exists Whether You Like It or Not

On a submarine, hierarchy is explicit. Rank is visible. Roles are clear.

You respect the people above you. You look out for the people below you. You understand where decisions come from and where accountability lives.

Modern workplaces often try to flatten this reality away. Titles are softened. Structures are blurred. Everyone pretends hierarchy doesn’t exist.

But it always does.

Someone makes final decisions. Someone owns outcomes. Someone is accountable when things go wrong. Understanding your position in that structure — and behaving accordingly — isn’t outdated. It’s professional.

Small Things Are Never Small

One of the first things you learn on a submarine is how dangerous “minor” issues can be.

A slammed door.
A dropped object.
A skipped check.

Any of these can lead to detection. Detection can lead to consequences you don’t get to walk away from.

That mindset sticks with you.

In business, the stakes are lower, but the pattern is the same. Small issues ignored today become major problems tomorrow. Technical debt, unclear ownership, sloppy processes — they don’t explode immediately. They erode systems quietly until failure becomes inevitable.

Improvisation Is a Skill, Not a Flaw

Despite the strict procedures, submarines also teach pragmatism.

Sometimes something breaks and you don’t have the perfect solution. You have the necessary one. You stabilize the system, keep people safe, and buy time to fix it properly.

This isn’t recklessness. It’s judgment.

Knowing when to be elegant and when to be practical is one of the hardest skills to learn — and one of the most valuable.

What Stuck With Me

Submarine life removes a lot of illusions.

There’s no room for performative competence.
No tolerance for chronic sloppiness.
No escape from responsibility.

Those lessons don’t disappear when you leave the military. They just show up differently — in how you build products, how you hire, how you lead, and how you decide what “good enough” really means.

And if there’s one thing five years underwater teaches you, it’s this:

The small things are rarely small.