Seji Hata

Papers

Total Citations

H-Index

About

Seji Hata is a pioneering figure in the field of underwater robotics, with a focused expertise in spherical robot design and water-jet propulsion systems. His foundational work centers on the development of novel, maneuverable underwater vehicles that break from traditional torpedo-like forms. Hata’s major contributions include the conceptualization and prototyping of a spherical underwater robot that utilizes three vectored water-jet propellers, a design that offers superior agility and omnidirectional movement compared to conventional thrusters. His 2011 paper detailing the underwater experiments of this robot, which has garnered 31 citations, provides critical insights into the dynamics and coordination of multiple water-jet propellers for precise control in aquatic environments. A companion paper, cited 24 times, lays out the complete design architecture, from the hull and waterproof chamber to the propulsion system. These works are considered foundational in the niche of spherical underwater vehicles, demonstrating a significant impact on the field by enabling new possibilities for inspection, exploration, and maneuvering in confined or complex underwater spaces. Hata’s research remains a key reference for engineers developing agile, bio-inspired underwater platforms.