| Championship | Event | # | Competitor |
|---|---|---|---|
| National Team Open 2004 | 100m Manikin Tow with Fins | 16 |
Hirotake NAKASHIMA - Japan National Team (JPN) |
| Championship | Event | # | Competitors |
|---|---|---|---|
| National Team Open 2004 | Oceanman/Oceanwoman Relay | 9 |
Japan National Team
(JPN) Masahiro HAYASHI, Tatsuya HONDA, Hirotake NAKASHIMA , Naoshisa TOYODA |
| National Team Open 2004 | 4x50m Obstacle Relay | 15 |
Japan National Team
(JPN) Masahiro HAYASHI, Kaoru IKETANI, Eiichi ISHII, Hirotake NAKASHIMA |
| National Team Open 2004 | Rescue Tube Rescue | 15 |
Japan National Team
(JPN) Kaoru IKETANI, Eiichi ISHII, Hirotake NAKASHIMA , Naoshisa TOYODA |