Research vessel

Old Uminoko by Wakaji Beer
https://tamasoft.co.jp/pepakura/gallery/gallerydetails.php?id=1221

OGS Explora by Giuseppe Civitarese

https://www.paperpino.net/ogs-explora/

Gakushusen Uminoko by Wakaji Beer
https://tamasoft.co.jp/pepakura/gallery/gallerydetails.php?id=1561