As public safety vessels have assumed more and more responsibility, maritime rescue personnel have been involved in a broader range of tasks, such as rescue, diving operations, law enforcement, port security patrols, rescuing drowning crews, and performing homeland security tasks. No matter day or night, weather is good or bad, infrared thermal imaging camera can help maritime public safety ships (such as public security boats, fire boats, harbor patrol ships, etc.) to successfully complete important tasks.

Visual cameras, night vision cameras and the human eye work in much the same way: light energy is reflected when it meets an obstacle, and a detector picks it up and converts it into an image. The detector's ability to generate images depends on the amount of light it can use, and in the event of night, haze or smoke, it can only do so with starlight, moonlight and other artificial light. Night vision goggles can generate images with green display in the film and television screen. The working principle of night vision goggles is to absorb a small amount of visible light, enlarge it, and then project it onto the display screen. However, in the low-light environment, the observation distance of night vision goggles will be severely limited. Image contrast is crucial in the process of generating effective images. If the contrast of the observed target is relatively high relative to its surrounding environment, then the visible light camera will have a greater chance to see the target clearly.

Thermal camera is not affected by such defects because it can detect heat and energy. Anything gives off heat, even ice, and it can be sensed as a video image, regardless of light or weather. Infrared thermal camera can also see objects from a longer distance, its high contrast is better than traditional visible light camera and night vision technology.

Thermal imaging requires no external lighting and can be detected at a greater distance than competing TV cameras. Another advantage of using a thermal camera is that the thermal signals of people, ships, cruise ships, docks, mounds and other objects detected by the Marine thermal camera are usually higher in contrast at night than during the day, so long as there is a slight difference in temperature between the object and its background, the observer can easily detect them.

At night, when the ship is sailing close to shore or in an unfavorable environment, the infrared thermal camera can give the crew important environmental perception for their safe navigation. In addition, important information can be obtained on a continuous basis: how far from the shoreline, how far from piles, docks, floaters and anchored vessels, etc., and the status of colleagues and the behavior of intentional offenders on land.

Infrared thermal camera are widely used in global maritime rescue operations. When someone falls into the water, the head is often the only visible part of the body. Since the heat emitted by the head is much greater than that of the water, the head can be clearly seen. This effect is achieved both day and night, allowing for a true 24-hour response.