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Sailing

Questions about wind-propelled water vessels, their maintenance, handling and rules governing their use.

2,485 Questions

Which vessels are required to carry day signals?

All vessels navigating in restricted visibility, such as fog or heavy rain, are required to carry day signals. This includes vessels over 12 meters in length, as well as those engaged in towing or pushing operations. Additionally, vessels engaged in fishing and certain types of commercial vessels may also be required to display day signals, depending on their specific operations and circumstances. The purpose of these signals is to enhance visibility and safety on the water.

What do sailors call the left side of a ship?

Sailors refer to the left side of a ship as the "port" side. This term helps distinguish it from the right side, which is called the "starboard" side. The use of these specific terms helps prevent confusion, especially when navigating or giving directions on board. The origin of "port" comes from the side of the ship that faces the port or harbor when docked.

What is the opening in the side of a ship called?

The opening in the side of a ship is called a "port" or "hatch." Ports are designed for loading and unloading cargo or allowing access to different areas of the vessel. Hatches are typically smaller openings that can be covered with a lid or cover to protect the contents from water and weather.

Who powered by wind in sails and designed for fast sailing in the ocean?

Vessels powered by wind in sails and designed for fast sailing in the ocean are typically referred to as sailing ships or yachts. These boats utilize the aerodynamic properties of sails to harness wind energy, allowing them to navigate efficiently across open waters. Examples include racing yachts, clipper ships, and catamarans, each engineered for speed and agility in oceanic conditions. Their design focuses on hydrodynamics and sail configurations to maximize performance.

How do girls mast urbate?

Girls typically masturbate by stimulating the clitoris and other erogenous zones using their fingers, sex toys, or other objects. Techniques can vary widely, including rubbing, stroking, or applying pressure, often guided by personal preference and comfort. Many also incorporate fantasies or erotic materials to enhance arousal. It's a normal and healthy practice for exploring one’s own body and sexuality.

What model sailboat was used in the movie Suicide Kings?

In the movie "Suicide Kings," the model sailboat featured prominently is a 1:12 scale model of a classic yacht, specifically a 1930s-era design. The sailboat serves as a significant motif throughout the film, symbolizing themes of control and manipulation. Its presence adds depth to the characters' dynamics and the unfolding plot.

What are the advantages of using wooden sail boats over other materials for sailing?

Wooden sail boats offer several advantages over boats made from other materials. They are known for their classic beauty, durability, and ability to provide a smooth and comfortable ride on the water. Additionally, wooden boats are often easier to repair and maintain compared to boats made from modern materials. Their natural buoyancy and flexibility make them well-suited for sailing in various conditions, and they have a timeless appeal that many sailors appreciate.

What is the nautical term which refers to a movable loop?

Oh, dude, you're talking about a "bight." It's like a loop in a rope that you can move around, you know, for all your fancy sailor needs. So yeah, next time you're out at sea and need to sound all nautical and stuff, just drop the word "bight" like it's no big deal.

What is the pole on a sailboat that holds the sails?

on most boats today there is one verticle "pole", the mast. one horizontal "pole" the boom. on older boats like scows and optimists the diagonal pole is called the sprit. there can also be a spinnaker pole which you clip onto the mast to hold out the spinnaker on a run or a reech. on a asymmetric boat the spinnie pole is pulled out when the spinnie is raised, you cann't and shouldn't clip it onto the mast.

What does wires called 'stays' hold up on sailboat?

Ah, the beautiful stays on a sailboat! They are like the supportive arms of a friend, holding up the mast so it can catch the wind and carry you on your journey. Just like how we all need support sometimes, the stays keep the mast strong and steady as you sail through the waves of life. Remember, it's okay to rely on others for support, just like the stays rely on the mast to guide the boat safely to its destination.

How far back will a 12 lb ball be while being dragged from a boat going 3 miles per hour 40 ft down?

The difficulty with your question is that it does not clearly define the problem. For example, a 12 pound ball made of lead will weigh the same as a 12 pound ball made of balsa wood, but the balsa wood ball (measuring several feet across) will float where the 12 pound ball made of lead will measure just a couple inches across and sink readily. To further complicate things, the line (rope or chain) you use to drag the ball also creates drag just as the ball would do. The size of the line and what it is made of is important, too, because the line will hang in what is called a catenary, a kind of sag in the line. There is a formula for the catenary, a formula for the drag on the ball, and a formula for the drag on the line, itself.

The final consideration is the consistency of the sea bottom. Dragging a ball through kelp will be different than dragging a ball across packed mud or loose gravel.

There are many things to consider besides speed, depth, and weight of a ball. Put all that together and then you mightget a close answer to what you seek.

To give you an idea that will get you in the ball park, so to speak, assume that the line drags out to an exact triangle. There are three sides to the triangle: a, b, and the hypotenuse (c). Assuming the drag will cause a 45 degree angle, then the depth down (a) will be the same as how "far back" the ball is (b) and the hypotenuse (how long the line is) will be the square root of the sums of the squares of the two sides (c). That is, as the Scarecrow quoted Pythagoras in the Wizard of Oz, "The square of the hypotenuse is equal to the sums of the squares of the other two sides!" In this case, two times forty squared is 3200 and the square root of that is just over 56 1/2 feet. But, remember: this won't be anywhere near where a real ball and line will be. The problem is more complex than a lesson from the Scarecrow.

~Let us not forget to include the salinity of the waters involved, which would affect the bouyancy of any items in it. Plus, whether or not this alleged ball is actually round, or somehow oval in shape. Plus; 40 feet down and how far outwill make yet another difference to your recalculations.

Do unopened beer bottles float?

Well, honey, technically speaking, unopened beer bottles can float because they are less dense than water. But if you're throwing a party and relying on your beer to double as a flotation device, I suggest you invest in a life jacket instead. Better safe than sorry, darling.

Why does it take longer to sail from England to America than from America to England?

The trade winds in that area of the Atlantic move from west to east, similar to the jet stream. This allows for a tailwind from America, creating an increased speed. This also creates a headwind when traveling from England, decreasing the overall speed.

How does wind move a sail?

Sails catch the wind which propels the boat forward

2nd Answereer says:

Previous answerer has been tricked by a trick question:

IN REALITY the wind foils around the the sail and PULLS the boat forward. A sail is nothing more than a vertical wing, providing LIFT. Should you ever have the pleasure to experience a strong puff of wind startling your becalmed craft, you will FEEL the LIFT that is provided. It's a physics thing (Aerodynamics).

3rd Answerer says:

Actually, its a bit of both!

When sailing "with the wind" (i.e. wind coming from straight behind the boat and hitting the sail pretty well square on) the push on the sail is transferred to the mast and boat. There's obviously a little bit of "less air pressure behind the sail" as a result, so there is some kind of "pull" going on too, but not much like this. (Air is too "runny" and will not let a significant area of low pressure form at lower speeds.)

But a triangular sailed boat is pretty clever really because you don't have to sail with the wind mostly behind you - you can sail "across" the wind, and depending on the design of the sail and boat combined can get pretty close up to the point where you start to sail into the wind. Some of this force is just from the "push" from the wind on the sail, and the structure of the boom/mast transfers the push onto the frame of the boat again. But the clever bit is that the shape of the sail does indeed then form a "wing" too, just like you get on an aeroplane, and the air hitting the sail supports the shape. Air flowing around the "front" of it then moves faster than behind it so you get a lower pressure forming in front which in turn "lifts" the boat forward. (Easier to draw than put in words!)

If you sail ("point up") too close the the direction the wind is coming from the sail will start to "luff" as air starts to come around the front of the sail, and pushes the front of it nearest the mast in the other way, spoiling the shape of the aerofoil wing and as a result the speed then drops off pretty sharply!

Did the lateen sail decrease a sailer's dependence on the force of the wind or on the direction of the wind?

The lateen sail increased a sailor's ability to sail effectively into the wind, rather than decreasing dependence on the wind's force. By allowing for better maneuverability and efficiency in changing wind conditions, the lateen sail revolutionized sailing techniques and made it easier to sail against the wind.

What is the formula in finding middle latitude sailing?

Middle latitude sailing is a navigation method that involves using a series of spherical triangles to determine the course to be followed on a Mercator chart. The formula used in finding middle latitude sailing involves solving these spherical triangles by applying spherical trigonometry principles. It's typically done using a navigational calculator or computer program to determine the course and distance to a destination.

What is the lunitidal interval for Chichester harbor entrance?

The lunitidal interval for Chichester Harbor entrance is approximately 4 hours and 45 minutes. This represents the time difference between when the moon is directly overhead and when high tide occurs.

Why was the keel boat invented?

The keel boat was invented to provide stability and maneuverability to boats, especially in rough waters. The addition of a keel helps prevent capsizing and allows for better control over the boat's direction.

About how long are around the world yacht races?

Around the world yacht races typically last anywhere from 6 to 9 months, covering over 25,000 nautical miles. Participants face a variety of challenges including extreme weather conditions, technical failures, and mental fatigue throughout the race. The race is a true test of endurance, skill, and determination for sailors.

As a ship sails a steady course the North Star sinks in the sky In what direction must the ship be sailing?

It is moving South. At sea you could measure the angle between the horizon and Polaris with a sextant. This angle is approximately equal to your Northern latitude. There are some mathematical corrections one can perform to get a more precise answer, but the further south you sail, the lower Polaris will become. Eventually, you will not be able to see it anymore. Polaris is not visible from the Southern Hemisphere and there is no South Star. The ship is in the Northern Hemisphere, moving South.

What do different waves travel through?

Mechanical waves, such as sound waves, travel through a medium like air, water, or solids. Electromagnetic waves, like light and radio waves, can travel through a vacuum because they do not need a medium to propagate.

What does MN stand for in the maritime industry?

MN stands for Merchant Navy in the maritime industry. It refers to the fleet of commercial vessels operated by private companies for transporting cargo and passengers across oceans and waterways. Members of the Merchant Navy are responsible for crewing these vessels and ensuring safe and efficient operations.

When the wind doubles does the pressure in the sails increase 8 times?

When the apparent wind speed is doubled, the pressure on the sail is quadrupled. That is because the pressure on the sail (or the side of your house or a billboard sign) is proportional to the square of the speed of the wind. If the wind speed triples, then the pressure goes up by a factor of nine, because three squared is nine.

What dock lines should you bring when docking in a transient slip while cruising?

You should always assume there will be no lines available when you cruise and carry the same lines you use to cover all weather contingencies at your home port...at a minimum, bow line, stern line, and fore and aft spring lines. Happy cruising.

What percentage of Americans sail as compared to people in other parts of the world?

Approximately 0.1% of Americans participate in sailing activities. In comparison, countries with a strong sailing culture, such as Australia or New Zealand, may have a higher percentage of their population engaged in sailing. However, globally, sailing is not a mainstream recreational activity and is more popular in coastal regions or countries with a maritime tradition.