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Dr. Stone Wiki

Science Vessel Perseus (科学船ペルセウス Kagakusen Peruseusu) is the fortieth episode of the Dr. Stone anime, and the fifth episode of the third season.


Thanks to Chrome's discovery, the Kingdom of Science has acquired a mine and founded its distribution network of iron and oil needed for minecarts, paved asphalt roads, and all the necessary routes required for the ship's roadmap. But the motorized sailboat project itself turns out more technically difficult than expected, forcing Senku to change plans before Ryusui steps in and proposes a revision to the blueprints. The shipbuilding project soon reaches its climax!

Plot Details[]

Even with Kaseki's skills, the ship proves impossible to assemble accurately. Ryusui recreates a scale model of a ship, allowing Senku to use a Pantograph to accurately copy the ship pieces to the correct size and shape. Ship construction begins running smoothly, but the engine requires Senku's absolute focus during its construction, as a single mistake could cause an explosion. A year later, the ship is finished. As it may be the last time they are all together, Minami insists on a commemorative photograph to mark the launch of the ship Perseus on the 10th of September, 5741 AD. After careful consideration, the Perseus' crew is made up of Ryusui, Senku, Chrome, Kaseki, Yuzuriha, Ukyo, Francois, Kohaku, Magma, Taiju, Nikki, Yo, Gen, and Kinro. As they are too dangerous to leave behind, Senku brings Hyoga and Homura in the ship's brig. Ginro fakes bravery by pretending to swim after the ship, hoping to impress Ruri, but Taiju hauls him aboard, dooming him to join the crew. Before starting the voyage to South America, Senku intends to find the island where his father Byakuya returned to earth with the other astronauts and locate something vital for their mission, the crashed Soyuz rocket.









Inventions and Discoveries[]

Anime to Manga Differences[]

  • During Ryusui's flashback, the part where he constructs his own racecourse is altered to have omitted Senku, Taiju and Yuzuriha around the area at the same time, doing their rocket project.
  • Extra scenes were added during Minami's journal of the revised project.


  • The episode was named after Chapter 102 again but with literal translation.
  • The opening was shifted as an inserted during the Perseus crew announcement scene.


Site Navigation[]

[v  e]
Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 20212223242526272829303132333435
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes 35Ryusui3637383940
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes 4142434445464748495051525354
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes 555657
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
New Stone World Arc
Chapters 194195196197198199200
Globetrotting Arc
Chapters 201202203204205206207208209210211212
Stone to Space Saga
Moon Mission Arc
Chapters 213214215216217218219220221222223224225226227228229230231232