# Trajectory tracking of under-actuated ships based on optimal sliding mode control with state observer

> Research article (Ocean Engineering, 2021) · cited 30× · AI/ML

**Wikidata**: [openalex:W3170056823](https://www.wikidata.org/wiki/openalex:W3170056823)  
**Source**: https://4ort.xyz/entity/trajectory-tracking-of-under-actuated-ships-based-on-optimal-sliding-mode-control-with-state-observer