How Does an Underwater Scooter Work? - Asiwo Sports

How Does an Underwater Scooter Work?

Have you ever been snorkeling or scuba diving and wished you could move through the water faster and with less effort?

Well, now you can, thanks to the invention of the underwater scooter. These devices, also known as diver propulsion vehicles (DPVs), allow divers to explore the underwater world with greater ease and speed. But how does an underwater scooter work?

This is what this blog will cover. So, read on.

How Does an Underwater Scooter Work?

First, let's take a look at the basic components of an underwater scooter. Most models consist of a waterproof housing, an electric motor, a rechargeable battery, a propeller, and a control system.

The housing is designed to keep the electrical components dry and prevent water from entering the scooter. Let's now look at how these components work together.

Motor & Propeller

The motor is connected to the propeller via a driveshaft, which transfers the rotational energy from the motor to the propeller. The motor can be controlled using a variety of methods, such as a trigger or a thumb lever, which allows the user to control the speed of the scooter.

And as you can guess, the propeller is the part of the underwater scooter that generates thrust, which propels the scooter through the water. Most underwater scooters use a single propeller, although some models may have two or more propellers for increased maneuverability.

The propeller is typically housed in a protective shroud, which helps to reduce the risk of injury to the user or damage to the environment.


The battery of an underwater scooter is a critical component that powers the device and enables it to propel through the water.

Most underwater scooters use lithium-ion batteries, which are lightweight and provide a high energy density. These batteries are capable of delivering the high power output needed to propel the scooter through the water.

The capacity of the battery determines how long the scooter can run on a single charge. The higher the capacity, the longer the scooter can operate. Battery capacity is usually measured in ampere-hours (Ah) or milliampere-hours (mAh).

To ensure safe and reliable operation, many underwater scooters incorporate a battery management system (BMS). This system monitors the battery's voltage, temperature, and other parameters to prevent overcharging, over-discharging, or overheating.

Control System

You also have a control system that allows you to control the speed and direction of the underwater scooter. This can be done using a variety of methods, such as a trigger or thumb lever, as mentioned earlier.

Some underwater scooters also have additional controls, such as a tilt sensor, which can be used to adjust the angle of the scooter and improve maneuverability.

What About Buoyancy?

Buoyancy is one of the most important design considerations in an underwater scooter.

Since the scooter adds weight to the diver, it can affect buoyancy and make it more difficult to maintain a neutral buoyancy. To counteract this, many underwater scooters are designed to be neutrally buoyant, which means they do not add or subtract from the diver's overall buoyancy.

How Do You Use an Underwater Scooter?

Underwater scooters today are used in recreational diving, scientific research, military operations, and search and rescue missions. They are also used to explore underwater environments, map the ocean floor, and transport equipment or supplies.

As far as recreational underwater scooters are concerned, here's how you can use it:

  • Read the instructions and safety guidelines: Before using the scooter, it's essential to read the manufacturer's instructions and safety guidelines. This will help you understand how to operate the device safely and avoid potential risks or hazards.

  • Check the scooter's condition: Make sure the scooter is in good working order and fully charged before use. Check for any signs of damage, corrosion, or wear and tear. If there are any issues, do not use the scooter until they have been resolved.

  • Attach any necessary equipment: Depending on your needs, you may need to attach accessories or equipment to the scooter, such as a tether, camera mount, or weight system. Make sure these are securely attached before use.

  • Gear up: Put on your dive gear, including your wetsuit. Ensure that you are properly weighted and buoyant, and that your dive computer or gauge is functioning properly (if any).

  • Hold onto the handles: The handles or grips on either side of the scooter are designed for you to hold onto while using the device. Make sure you have a firm grip before activating the motor.

  • Activate the motor: Using the control system, activate the motor by pressing the trigger or thumb lever. The motor will start to spin the propeller, generating thrust that propels the scooter through the water.

  • Adjust the speed and direction: Using the control system, adjust the speed and direction of the scooter. This can be done by pressing or releasing the trigger or thumb lever, depending on the model of the scooter. Be sure to adjust the speed and direction gradually to avoid sudden movements or changes in buoyancy.

  • Watch out for hazards: Keep an eye out for any hazards or obstacles in your path, such as rocks, coral, or other divers. Avoid getting too close to marine life or disturbing the environment.

  • Respect the environment: As a diver, it's important to respect the environment and the marine life that inhabits it. Avoid touching or disturbing any marine life or underwater structures, and be mindful of your impact on the ecosystem.

  • Turn off the motor: When you're finished using the scooter, turn off the motor using the control system. Hold onto the handles until the scooter comes to a complete stop. Properly store the scooter to prevent damage or corrosion.

Some underwater scooters like the Asiwo Manta feature a unique one-hand mode that enables you to interact with marine life.

By holding the scooter with one hand, the motor located on your side produces additional power, which helps to maintain balance and direction, freeing up your other hand for maximum enjoyment.


An underwater scooter is a fascinating and innovative invention that has revolutionized the way we explore and interact with the underwater world. By harnessing the power of electricity and technology, these devices allow us to move through the water with greater ease and speed, and to explore areas that were previously inaccessible.

Whether you're a seasoned diver or a first-time snorkeler, an underwater scooter can help enhance your underwater experience and take your adventure to the next level. If you want to learn about these great devices, check out our detailed guide here. Happy diving!

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