Summer and a boat trip sound fun, right? During the summer season, you and your family decided to go on a boat picnic for two days in the sea to enjoy the summer and the sea.
You planned for everything, but suddenly, it started to bother you that you wanted to navigate on the boat by using a GPS, and the only GPS you have is the GPS of your car.
The answer is a little complicated here. You can navigate on a boat using a car-based GPS, but not totally. The main reason behind it is it will only show you the position but won’t provide you with enough naval information, which will be necessary during navigation.
We know this little answer won’t be enough for you, and that’s why we are here to help you with a proper guideline and solution about whether can a car GPS can be used on a boat.
What Is GPS?
Before going down to other information and discussion, we would like to provide you with some basic information about GPS units and how they work.
GPS stands for Global Positioning System. This short answer does not describe the whole thing, right? Well, the GPS is a satellite-based navigation system.
The government of the United States owns it, and the space force of the USA operates it. The GPS provides timing, position, and navigation without any fees or without requiring any data transmission by the user.
How Does GPS Work?
GPS work by 30 satellites in orbit operated and maintained by the US space force. These satellites are continuously beaming data down to earth, received by devices such as your phone, smartwatch, or car-specific GPS units, allowing you to know your position on the planet.
When GPS units determine your position, they can also quantify other information. Like:
- Posture
- Speed
- Track
- Perfect route
- Destination Distance
- Trip Distance
- And some other little details
Here is a YouTube video below that will help you understand and provide details on how GPS units work.
Can a Car GPS Be Used on a Boat?
As we have said, you can use a car GPS on a boat but not totally. That means using a car-specific GPS will only provide you with your position but won’t provide you with enough navigational features.
And the main reason behind all of this is that GPS units can transmit data with satellites from anywhere in the world, but no programs of aquatic features and maritime needed maps. Car-specific GPS units can show little details on the water because there are no suitable topography and shoreline maps.
But still, if you have no other option left and you have to use your car-specific GPS unit on a boat, then these guidelines below will help you to navigate during maritime by using a car GPS.
Firstly, you should find the menu of your car’s GPS, and from the menu, you can find an option that will display your longitude and latitude.
The latitude will show you how far north or south your position is, and the longitude will show you how far east-west your position is.
Then you have to take your latitude and longitude and plot it on a nautical chart straight. A Nautical Chart is a graphical representation of the sea area. It has latitude and longitude on both edges, so it’s a simple process to reverse your position on the chart.
Once you have done it, you can mark your position and find the navigational attributes in your location to navigate on the water.
A car GPS unit doesn’t come with good navigational features, and we don’t recommend you to use a car GPS on a boat when you have an option to not, but if you feel it that much obvious to do, then the steps above will help you for limited navigation on the water.
Difference between a Car GPS and a Boat GPS
A car and boat GPS unit uses the same satellite to transmit data; the same space force controls both and provides data to the same users. But the difference between these GPS units is the way of displaying data to the user.
A car GPS shows the digital version of the roads and area. It will provide you with the perfect route on land and help you know about the traffic status and other information with the car plotted in the accurate position. Car GPS will show you your position and the areas around you and will help you to navigate on the land surface.
On the other hand, a boat GPS unit shows the digital version of nautical charts, with the boat or other vessel directed to the accurate position. A boat GPS unit will provide you with the necessary maritime information like any navigational threats, weather updates, depth of the water, and other little yet helpful information.
The Disadvantage of Using a Car GPS on a Boat
The manufacturer did not design the specific car GPS unit for boat usage. So, it has disadvantages if you use a car GPS on a boat.
The first and most serious disadvantage is a car GPS will show you only a plain blue water surface when you are in the water. It won’t provide a detailed graphical presentation of the water’s surface.
A car GPS is not resistant to water or other elements that can harm the car GPS if you use a boat. The designers did not intend to use the car GPS on a boat. Manufacturers made it to adapt to the condition inside of a car, not to adapt to a boat on the lake or water surface.
GPS Unit to Use on a Boat
Marine Specific GPS is the only GPS you should use to navigate the sea.
You can already understand by the name that designers intended to use a marine GPS in marine or sea areas. Just like a car GPS, a boat GPS also works by transmitting data with the 30 satellites in orbit.
But instead of showing land positions, a marine GPS shows a digital version of nautical charts. It is why a boat’s GPS unit is bigger and more complex than a car’s GPS or other types of GPS unit, and mostly, they are attached to the dashboard of a boat.
The exact accuracy of your position is the most essential part of maritime navigation. And that is why marine GPS units are combined with the accuracy of automobile GPS units and the data transmission capability of outdoor GPS units.
Boaters depend on these marine GPS units to locate and determine their position. It helps them to provide accurate information about where the sea level is more complex and where it is not. The sea can be life-threatening, so exact information is necessary during naval navigation.
Marine GPS units can also provide some other information like the weather update on the sea level or the depth of the water. Also, some marine GPS units have unique features like seeing the underwater surface using sound technology or detecting any hazards or obstacles around the vessel.
How to Use Marine GPS?
GPS units are required to be connected with more satellites to provide accurate information about your position. And this accuracy depends on the atmospheric condition of the receiver’s quality.
When a GPS unit can connect with multiple satellites from one place, it can easily mark your position within a 16-foot radius. Some high-end receivers can provide more accuracy through their dual channel function.
When in the aquatic area, your GPS will continuously update your position and provide information about your speed and directions.
A marine GPS will allow you to save positions commonly called ‘waypoints.’ It helps the fishermen and boaters mark the route or a fishing hot spot.
A marine GPS displays your position in latitude and longitude. While displaying that, some modern marine GPS can also display where they are using a digital chart – like a street map showing you your position.
GPS units that can display charts are known as “Chartplotter.” In recent times digitals charts have become more encyclopedic. They can provide more details and accuracy about the areas in their radius.
Advantages of Marine GPS
First of all, GPS units intended to be used in a car are not designed to adapt to the moist condition of a boat. A car interior does not face water daily, so car interiors are not made waterproof.
A marine-specific GPS unit is designed to experience the same situation experienced by fishermen or boaters. It is designed to face the moisture of marine areas and the unfavorable weather conditions of the sea.
Marine-specific GPS units are designed with the necessary data on aquatic surfaces. They are programmed with chart plotters, maps, and other much-needed data that a car GPS unit doesn’t have.
Marine GPS units are filled with detailed aquatic maps to calculate the depth of the water, topography, weather update, and other data tools. It makes it easy to navigate for boaters while being on the sea’s surface.
Car-specific GPS units will provide basic information about the water’s surface. Still, it won’t always be enough because there are times when you may need more accuracy or detailed map information.
A marine GPS unit is programmed to provide all the necessary tools for maritime navigation. From topography to calculating the water depth, a marine GPS is designed with these features in mind.
A car-specific GPS unit will help you with limited information on the aquatic area. Still, it is not recommended to do this unless it’s an emergency because it won’t withstand the shoreline weather and situation. To navigate in the water, a marine GPS is the best to do the job.
GPS System to Use on a Boat and in a Car
Many modern GPS units are now available, designed to be used in a car and a boat. These are not car-specific or marine-specific GPS units but can be used on both platforms.
Some manufacturers have made these different types of GPS for outdoor enthusiasts, and these GPS units are designed with different types of maps like pedestrian maps for campers or hikers or some basic aquatic maps for navigating on a small water surface.
These GPS units are more durable than car GPS and water-resistant. Some GPS units even resist extreme conditions like too cold or too hot.
You can also use your cell phone and iPhone as a car and marine GPS.
To use it as a car GPS, most phones have Google Maps on them. Google map provides almost the same functions as a car GPS unit, but it does not have any navigational information.
You must download a nautical chart app to use your phone as a marine GPS. There are a lot of apps you can find in the play store or app store, which are made with chart plotters and other naval navigation tools. These apps will help you navigate the sea with good accuracy and make your navigation easy for you.
Final Words
A car and a boat are both made to be used on different types of surfaces. You can’t ride a car in the ocean, nor can you use a boat on land.
And that is why a car-specific GPS unit is designed to help you navigate on the land surface, and a marine-specific GPS unit is designed to navigate on the aquatic surface. So, we recommend you use them as they are intended to be used.