In the world of anime, certain stories and settings leave a lasting impression, especially when they blend futuristic technology with human emotion and conflict. Blue Submarine No. 6 is one such series that has captured the imagination of anime fans with its unique premise, stunning animation, and the iconic ships that form the backbone of the story. But what exactly are the ships of Blue Submarine No. 6, and how do they play a crucial role in the narrative? Let’s dive into the fascinating world of these underwater vessels and explore what makes them so memorable.

What is Blue Submarine No. 6?

First released in 1998, Blue Submarine No. 6 (or Aoi Submarine No. 6 in Japanese) is a 4-episode OVA (Original Video Animation) that quickly became a cult classic. Set in a post-apocalyptic future where global warming has caused the melting of the ice caps, the Earth's oceans have risen, swallowing much of the land. This altered world is now dominated by huge underwater cities and ships, setting the stage for an epic battle between humans and a race of genetically modified, sea-dwelling creatures.

At the heart of the series is the conflict between the remnants of humanity and these mysterious sea beings. The protagonist, Tetsu, is a member of the crew aboard the advanced submarine Blue Submarine No. 6, and he plays a pivotal role in defending humanity from the rising threat.

While the plot is rich with action, philosophy, and futuristic technology, the ships—especially Blue Submarine No. 6—are integral to the series, not just as vehicles of war, but as symbols of humanity's struggle for survival.

The Famous Ships of Blue Submarine No. 6

1. Blue Submarine No. 6 (The Main Vessel)

As the title suggests, Blue Submarine No. 6 is the most iconic ship in the series. This advanced, high-tech submarine is equipped with the latest in underwater combat technology and serves as humanity’s primary defense against the oceanic mutants threatening the planet.

Blue Submarine No. 6 is a massive vessel, designed with sleek lines and a futuristic aesthetic, reflecting the advanced technology of the time. The ship's main feature is its high-speed capabilities and the ability to traverse vast expanses of the submerged world. The submarine is also heavily armed, capable of engaging in high-stakes underwater battles.

However, the Blue Submarine No. 6 is not just a weapon of war—it also symbolizes humanity’s last hope. Its name suggests a sense of unity and purpose, as it’s one of the few remaining ships capable of holding back the mutant threat. Throughout the series, the ship’s journey reflects the battle between survival and destruction, showcasing both the power and vulnerability of the vessel.

2. Blue Submarine No. 7 (The Enemy Vessel)

In addition to Blue Submarine No. 6, there is also the menacing Blue Submarine No. 7, the enemy vessel that belongs to the sea-dwelling creatures. This submarine, which operates under the leadership of the mysterious and hostile mutants, is equally advanced and poses a direct challenge to the protagonists.

While Blue Submarine No. 6 is designed with the needs of humans in mind, Blue Submarine No. 7 showcases the adaptations of the creatures to their aquatic environment. It’s a dark, imposing design—more biological and less mechanical in appearance. This vessel plays a crucial role in the battle between the two factions, with each ship representing their respective sides in the conflict.

The design of Blue Submarine No. 7 contrasts with that of the human submarine, reinforcing the stark division between humanity and the mutants. The ship’s sleek, organic look makes it a fascinating addition to the series and further emphasizes the series’ thematic explorations of nature vs. technology.

Ship Design and Aesthetic

One of the standout features of Blue Submarine No. 6 is the design of the ships themselves. The visual direction is futuristic and beautifully realized, with the ships boasting a mix of realistic and sci-fi aesthetics. The submarines aren’t just functional vehicles but also works of art in their own right, each designed with a distinct personality.

The Blue Submarine No. 6 itself is sleek and functional, with a minimalist design that makes it look fast and efficient—ideal for the intense underwater combat that takes place throughout the series. The ship’s smooth exterior and streamlined shape contrast with the more jagged, aggressive designs of its enemies, symbolizing the difference between human ingenuity and the chaotic, unpredictable forces of nature.

The attention to detail in the ship’s interiors further enhances the series’ immersive quality. The control rooms, corridors, and weapons bays are all meticulously designed, giving viewers a sense of being inside a real, functioning military vessel. The ship’s exterior and interior aesthetics help tell the story of the characters’ struggles and the environment in which they find themselves.

Themes Behind the Ships and Their Significance

In addition to their visual appeal, the ships in Blue Submarine No. 6 serve as symbols of various central themes in the anime. The advanced technology of the submarines represents humanity’s resilience and ability to adapt, but it also reflects the inherent dangers of unchecked technological progress.

The rivalry between the two submarines—the human-operated Blue Submarine No. 6 and the mutant-operated Blue Submarine No. 7—symbolizes the ongoing conflict between man and nature. As global warming reshapes the planet and forces humans to retreat underwater, the fight for control over the oceans becomes a metaphor for the larger struggles facing humanity. The series suggests that technology, no matter how advanced, can never truly control nature, which will always find a way to fight back.

The Legacy of Blue Submarine No. 6

Blue Submarine No. 6 is a unique and visually stunning anime that continues to hold a special place in the hearts of fans. The series blends action, drama, and deep philosophical themes in a way that few others do. And at the heart of it all are the ships—the futuristic submarines that represent humanity’s struggle for survival in a rapidly changing world.

Whether you’re a fan of anime, a lover of futuristic technology, or simply someone who appreciates well-designed vessels, Blue Submarine No. 6 offers a captivating and unforgettable experience. The ships aren’t just tools of war—they embody the overarching themes of the series: humanity’s perseverance, the consequences of environmental destruction, and the delicate balance between technology and nature.

Have you seen Blue Submarine No. 6? What do you think of the iconic ships featured in the series? Share your thoughts in the comments below!