Small workboats are indispensable "light cavalry" in port operations. They usually refer to vessels with a length of 5 to 30 meters, dedicated to specific operations within the port or near the shore. Their core characteristics include high maneuverability, strong functionality, and compact adaptability.

Small service vessels are a type of light ship used for specific services at sea or in inland waterways. They are typically between 20 and 100 meters in length and feature flexibility and multi-functionality. They are widely applied in fields such as ports, marine engineering, fishing, and scientific research.