🚢🌊 National Submarine Day - March 17 — Dive Deep Into One of the Coolest Inventions Ever
While everyone else is busy wearing green and searching for four-leaf clovers, there’s another reason March 17 deserves a toast: Submarine Day! 🎉
Yes, today we celebrate the ingenious underwater vessels that let humans explore the mysterious depths of the ocean without turning into fish. From early experimental contraptions to modern nuclear-powered giants cruising silently beneath the waves, submarines are equal parts science, engineering, and straight-up spy movie energy.
So grab a nautical snack, practice saying “dive, dive!” dramatically, and let’s plunge into the surprisingly fun world of submarines.
💡 Quick Heads-Up (A.K.A. The Affiliate Thing)
This post may contain affiliate links. That means if you buy a submarine-shaped cookie cutter or a ridiculously cool ocean exploration book through one of these links, I might earn a tiny commission — at no extra cost to you. Basically, it helps keep the lights on and the snacks flowing around here. 🚢🍪
🌊 The History Behind Submarine Day
Submarine Day marks March 17, 1898, when the U.S. Navy officially purchased the Holland VI, the first modern submarine, designed by Irish engineer John Philip Holland.
Before that moment, submarines were more like experimental underwater tubes than reliable vessels. Early inventors had been tinkering with submersible ideas since the 1600s, but they were often clunky, dangerous, or powered by things like… hand cranks. Not exactly ideal for underwater stealth missions.
Holland’s design changed everything. His submarine could run on gasoline engines on the surface and electric batteries underwater. That meant it could actually dive, travel, and resurface safely.
The Navy loved it, bought it, and renamed it the USS Holland (SS-1) — launching an entire era of submarine development.
Fast forward to today, and submarines can:
Stay underwater for months
Travel silently beneath the ocean
Carry advanced research equipment
Or casually appear in every spy movie ever made
Not bad for something that started as a metal tube with big dreams.
⚓ 7 Fascinating Submarine Facts
Submarines can stay underwater for months.
Nuclear submarines only need to surface for food.The first military submarine attack happened in 1776 during the American Revolution.
Modern submarines can dive over 800 feet deep—some experimental ones even deeper.
Submarines make their own oxygen by splitting water molecules through electrolysis.
The largest submarine ever built is Russia’s Typhoon-class submarine.
Submariners are called “the silent service.”
Some submarines are used for science, exploring shipwrecks, underwater volcanoes, and deep-sea creatures.
Basically: submarines are the introverts of the ocean — quiet, mysterious, and extremely capable.
🎉 12 Fun Ways to Celebrate Submarine Day
Watch a submarine movie night (see picks below).
Build a DIY submarine model with a kit or LEGO.
Make a “submarine sandwich bar.” Obviously required.
Try a baking soda + bottle submarine experiment for kids.
Visit a maritime museum with submarine exhibits.
Learn basic naval signal flags.
Host a “Dive! Dive!” trivia game.
Make submarine cupcakes with periscope pretzels.
Read a book about deep-sea exploration.
Create ocean-themed crafts with recycled materials.
Listen to ocean ambience or sonar sounds.
Play a stealth game where everyone moves silently like a submarine crew.
Bonus points if someone dramatically announces:
“Prepare to dive!”
🍽️ Submarine Day Dinner Menu
⚓ Entrée: Ultimate Submarine Sandwich
Ingredients
Hoagie rolls
Sliced turkey
Salami
Ham
Provolone cheese
Lettuce
Tomato
Pickles
Italian dressing
Instructions
Slice rolls lengthwise.
Layer meats and cheese generously.
Add lettuce, tomato, and pickles.
Drizzle with Italian dressing.
Close and slice into “sub” sections.
Eat while making submarine sound effects. Mandatory.
🥗 Side: Seaweed-Inspired Garlic Green Beans
Ingredients
1 lb green beans
2 cloves garlic (minced)
1 tbsp olive oil
Salt & pepper
Instructions
Sauté garlic in olive oil.
Add green beans and cook 5–6 minutes.
Season and serve.
Simple, ocean-colored, and delicious.
🍹 Drink
Captain’s Ocean Cocktail
2 oz coconut rum
1 oz blue curaçao
Pineapple juice
Ice
Shake and pour into a tall glass.
Ocean Explorer Mocktail
Blue sports drink
Lemon-lime soda
Splash of pineapple juice
Add gummy sharks for fun.
🍰 Dessert: Submarine Cupcakes
Ingredients
Chocolate cupcakes
Blue frosting
Graham cracker crumbs
Yellow candy melts
Instructions
Frost cupcakes blue (ocean!).
Sprinkle crumbs for “sand.”
Mold small yellow submarine shapes with melted candy.
Place on top like they’re cruising the sea.
Adorable AND delicious.
📚 Classroom Activities
Elementary School
Bottle Submarine Experiment
Students create mini submarines using:
Plastic bottles
Balloons
Water pressure
They’ll learn how buoyancy works — and get a little messy (the best kind of science).
Middle & High School
Submarine Design Challenge
Students design a theoretical submarine capable of:
Deep-sea research
Stealth missions
Underwater rescue
Bonus: present their designs like engineers pitching to the Navy.
💼 Workplace Activity
“Silent Service” Challenge
For one hour:
Teams communicate only using notes or hand signals.
The quietest team wins a prize.
Unexpected side effect: your office may discover how loud it normally is.
🎬 Movie Pick - The Hunt for Red October (1990)
This classic submarine thriller combines espionage, Cold War tension, and Sean Connery’s legendary voice. It’s suspenseful, smart, and peak submarine storytelling.
📺 TV Episode Pick - SpongeBob SquarePants — “Mermaid Man and Barnacle Boy”
Why? Because if we’re celebrating underwater life, we might as well include Bikini Bottom. Plus, SpongeBob energy is exactly the level of chaos a Tuesday celebration deserves.
#️⃣ Hashtags
#SubmarineDay
#DiveDive
#OceanExploration
#NavalHistory
#UnderTheSea
#DeepSeaAdventure
#MaritimeHistory
#OceanNerd
#STEMFun
#CelebrateEveryDay
#HistoryNerd
#QuirkyHolidays
