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National Submarine Day

Celebrate National Submarine Day with a dive into the depths of underwater exploration!
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April 11
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United States
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Get ready to celebrate National Submarine Day on April 11! This day celebrates the invention of the submarine, which has played a major role in naval warfare since its inception. The first submarine was built by Dutch inventor Cornelius van Drebbel in 1620, and it is believed that he and his crew took several submerged trips along the Thames River. Since then, submarines have become an integral part of modern military strategy due to their stealth capabilities and ability to navigate underwater for extended periods of time.

History of National Submarine Day

National Submarine Day Timeline

<div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1620</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Invention of Submarine</div><div class='timeline-text'>Cornelius van Drebbel invents the first navigable submarine, making several submerged voyages along the Thames River.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1775</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Turtle Submarine</div><div class='timeline-text'>During the American Revolutionary War, the "Turtle" – American's first submarine – is deployed but fails to sink a British warship.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1864</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Submarine In Combat</div><div class='timeline-text'>The Confederate submarine H.L. Hunley becomes the first to sink an enemy warship during the American Civil War.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1900</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>U.S. Navy's First Submarine</div><div class='timeline-text'>The U.S. Navy commissions its first submarine, the USS Holland.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1943</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>German U-Boats in WWII</div><div class='timeline-text'>During World War II, Germany's U-boats launch sustained submarine attacks on Allied supply ships.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1954</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>First Nuclear-Powered Submarine</div><div class='timeline-text'>The USS Nautilus, the world's first operational nuclear-powered submarine, enters service for the U.S. Navy.</div></div></div>

How to Celebrate National Submarine Day

<div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>1</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Watch a submarine movie</h3><p id='' class='facts-text'>Gather your family and friends, pop some popcorn and watch a classic submarine movie like “Das Boot” or “Hunt for Red October”.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>2</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Visit a submarine museum</h3><p id='' class='facts-text'>Check out the nearest Navy base or research online to find a local museum that has a submarine exhibit. It’s a great way to learn about the history of submarines, their technology, and even get an up close view of one.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>3</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Read a submarine novel</h3><p id='' class='facts-text'>If you are more of an indoor person, why not curl up with a good book? Pick up a submarine novel such as “The Hunt for Red October” by Tom Clancy or “Below” by Ryan Lockwood.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>4</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Play a submarine game</h3><p id='' class='facts-text'>For an interactive experience, try playing a computer game like Silent Hunter 4 or Sub Command: Akula Seawolf 688(I). Dive in and let the adventure begin!</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>5</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Eat submarine sandwiches</h3><p id='' class='facts-text'>No celebration is complete without food, right? Head to your favorite local sandwich shop and order yourself a classic sub sandwich in honor of National Submarine Day.</p></div></div>

Why National Submarine Day is Important

<div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>A</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>Celebrates naval history</h3><p id='' class='whywelove-text'>National Submarine Day is a special day to recognize and honor the history of submarine warfare. It pays tribute to all of the brave servicemen who have served on submarines, fought in battles, and put their lives on the line protecting our freedoms.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>B</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>Recognizes modern technology</h3><p id='' class='whywelove-text'>Submarines have come a long way since their first use in war. Modern subs are some of the most sophisticated underwater vessels ever created and feature cutting edge technologies such as sonar navigation and deep diving capabilities.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>C</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>Helps protect ocean environments</h3><p id='' class='whywelove-text'>Submarines are an important tool for marine research and conservation efforts around the world. By studying ocean environments and ecosystems, submariners help us better understand our planet’s waters and how best to preserve them for future generations.</p></div></div>

5 Intriguing Facts For National Submarine Day

National Submarine Day FAQs

When is National Submarine Day?

National Submarine Day is celebrated on April 11 every year. In 2024 National Submarine Day will occur on a Thursday.

National Submarine Day Dates



Apr 11



Apr 11



Apr 11



Apr 11



Apr 11


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