Navigation can seem pretty overwhelming when you consider that you're trying to keep up with where the rest of the world is. And that's, without mentioning how it feels to get lost and realize you just lost track of an entire planet. By learning to navigate underwater you'll minimize how often you get disoriented, and if it does happen, you'll more quickly figure out where you mislaid the whole of existence. Don't let it intimidate you there an, two kinds of  Scuba divers: those who have been lost underwater, and those who won't admit it

Navigation makes your underwater adventure more fun in several ways. It lets you plan your Bali Scuba dive so you don't waste time and air trying to find the best parts of the reef, and so you end your  Bali scuba dive near your exit point with ample reserve air left. By knowing where you are at all times, you can head straight for the boat or shore if a problem crops up, and you know where you haven't explored yet. If there's anything in the area you want to avoid, navigation helps you do so. Compass navigation helps you swim a straight line when you're lost, you tend to swim in a circle. 

With experience you'll learn to navigate by following cues you find in the environment (a scuba diver who has been there a gazillion times is a great cue to follow), but an underwater compass makes navigating easier and more accurate, and the more you use it. the more true this is.

Basically, compass navigation works like this: your compass remembers where the North Pole is, and you remember where everything is in relation to the North Pole. Okay, more detail will help, but that's the essential principle of compass navigation. Let's start with the four basic features you'll find on most underwater compasses.

Lubber line: the lubber line indicates your travel direction and runs straight down the center of your compass. It may be imaginary you draw the line mentally through the 0 degree and 180 degree marks. Or, the compass may have an actual line there or along one side of the compass. Any time you navigate with your compass. you have the lubber line pointed where you're headed, or you're using the compass to point the lubber line in the direction you should head. If you're navigating with your compass and you're not traveling along the lubber line, then ... well. then you're not actually navigating with your compass. 

Magnetic north needle: In the center of the compass is a needle (or an arrow printed on a disk) that is free to rotate inside the compass. This magnetic north needle, or compass needle, always points to magnetic north. By doing this, it creates an angle with the lubber line that you use to maintain a straight line as you swim.

Bezel: Most underwater compasses have a rotating bezel. To set the compass, align the two small, parallel index marks on the bezel over the compass needle. These help you maintain a straight direction of travel.Heading References: Most underwater compasses numbers so you can record your heading (your direction of travel as measured in degrees from magnetic north). A few compasses have only general markings for north, south, east and west: you can use these for general navigation but for precision want one with degree headings.

Electronic compasses provide the same information and functions, but use digital readouts. See the manufacturer instructions if you're using an underwater electronic compass.To navigate with a compass, the first step is to hold it correctly. Hold the compass so the lubber line aligns with the center line of your body. If you wear your compass on your wrist, hold the arm without the compass straight out and grasp it with your opposite hand near or above the elbow, solidly placing the compass rides in front of you. If your compass rides in front, hold the console squarely in front with both hands.

When using your compass, keep the lubber line aligned with Your body center line. Otherwise you won't swim along the lubber line, and you'll throw off your navigation even if you use the compass conrrectly other respects.

To navigate a straight line, simply point the lubber line in the direction you want to go and align your body with the lubber line. Hold the compass reasonably level (otherwise the needle locks) and allow the needle to settle. Next, turn the bezel so the index marks align over the compass needle. (For swimming in a straight line, you don't need to use heading degrees or north, south, east and west.)

Lubber line leans to navigate a straight line, point the lubber line in the direction you want to go and allow the needle to settle. Next, turn the bezel so the index marks align over the compass needle. Travel along the lubber line keeping the needle within the marks.

Now, swim along the lubber line (your desired direction of travel) while keeping the compass the HA the needle within the index marks. If the needle begins to leave the index marks, you're turning off course. Adjust your direction so the needle stays within the index marks. Remember that the compass needle never really turns it always points to magnetic north. If the needle appears to have moved, it's you. Who moved from the course.

For Bali scuba diving in many environments, you'll use the compass to swim out, then set a reciprocal heading to return to the boat or shore at the end of the Bali scuba dive. With a little practice, ,you'll find compass navigation not only useful. but a fun challenge it's the kind of skill that's pretty easy to get down the basic you need, but takes a lot of practice and experience to attain the to-the-metre/foot precision that sets the master apart from the average.