Core Features

Strong start-up thrust and abundant torque at low speeds; strong resistance to water flow and heavy loads; low motor heat generation, suitable for long continuous operation; limited maximum speed, efficiency drops significantly when sailing at high speed.

Applicable Vessels

• Work rigid inflatable boats (RIB) & work boats: waterway inspection vessels, water quality monitoring boats, marine sampling boats, requiring station-keeping against currents, low-speed cruising and frequent start-stop.

• Inland / lake aquaculture boats and fishing auxiliary boats: carrying fishing nets and cargo with fluctuating hull loads, no demand for high speed, requiring stable thrust output under heavy loads.

• Pontoon boats, leisure barges and passenger barges: passenger and cargo transport with wide high-resistance hulls, designed for steady low-speed cruising with low noise and high comfort.

• Archaeological, underwater detection and sonar mapping vessels: survey tasks require stable low speed without sharp speed fluctuations; low motor noise will not interfere with underwater acoustic equipment.

• Small engineering work boats: towing floating structures, deploying and recovering ROV/AUV underwater robots, requiring large static thrust for traction.

Core requirement: Thrust first, stability first, continuous operation first; speed secondary.            

Core Features

High sailing speed under light load; high power efficiency when hull resistance is low; heavy load and low-speed conditions bring heavy motor load and weak continuous high-thrust capacity; suitable for short-duration high-speed navigation.

Applicable Vessels

• Small fiberglass sports boats and leisure racing boats: streamlined, lightweight hulls for short-distance high-speed leisure cruising.

• High-speed rescue inflatable boats (light load): reach target waters rapidly under no-load or light-load conditions.

• Small high-speed patrol boats: lightweight hulls for rapid maneuvering and short-range fast response.

• Private leisure fishing boats: narrow low-resistance hulls for fast travel to fishing spots, followed by short low-speed drifting.

Core requirement: Speed first, lightweight maneuver first, generally low payload.            

1. 1. Check hull and load first
   Wide hull, deep draft, frequent full load, towing required → Prefer low-speed high-torque model. Slender lightweight hull, few passengers, priority on fast maneuver → Prefer high-speed model.

2. 2. Check the most frequent navigation mode
   If over 80% of sailing time is low-speed cruising and fixed-point operation with rare high-speed sprints, do not blindly select high-speed models. High-speed outboards have poor efficiency under low-speed heavy-load conditions and carry higher risk of motor overheating. If most trips require fast travel with stable and light hull load, choose high-speed models.

3. 3. Water environment
   For river and offshore operation with currents and surges where the vessel needs to continuously counteract water flow, select low-speed high-torque version to guarantee anti-current capability. For light-load leisure navigation on still lakes, high-speed models are acceptable.