How does a hard chine work?
A hard chine is an angle with little rounding, where a soft chine would be more rounded, but still involve the meeting of distinct planes. This also produced a rounded hull, generally with a sharp bottom edge to form the keel. Planked boats were built in this manner for most of history.
What is tripping on a boat?
A line attached to the Crown of an anchor and leading up to the deck so that the anchor can be broken out of the ground.
What is chine lock?
chine lock is when you initiate a hard turn and the boat simply won’t react without cutting the throttle. you can try to turn the boat out of the turn but it won’t react.
What is an Elci?
An Equipment Leakage Circuit Interrupter (ELCI) shall be installed with or in addition to the main shore power disconnect circuit breaker(s) or at the additional overcurrent protection as required by E–11.10. GFCIs are used as branch circuit ground fault protection at the 5mA threshold in potentially wet environments.
How do you find a ground fault on a boat?
A better way to test for ground integrity is to connect the shore cord to the boat and bring the shore plug back to a position near the electrical panel. With all on-board AC sources turned off, use an Ohm meter to check that the ground prong is solidly connected to the boat’s safety ground system.
Is chine walk dangerous?
The experience of chine walk can be only slightly bothersome on some boats or can get to be out-and-out dangerous on others. The latter can ultimately result in catastrophic consequences if the condition is not corrected quickly.
Why do boat designers use hard chine hulls?
A good designer can make a hard chine hull behave identical to a round bilge one by trading off other design features. Usually a fast planing hull will come up on plan much faster with hard chines, and that is why there are used. If you are getting a heavy and slow boat, you will never come up on plane so rounded hull forms will have less drag.
What do reverse chines on a boat mean?
Chines refer to the sharp changes in angles in its cross section. These angular chines appear along the outline of your boat’s hull and in the area where the hull intersects the underside of the boat. Reverse chines angle downward. When they are in water, they part the waters to the sides as well as downwards at the same time.
What does the chine of a boat mean?
The chine of a boat refers to the change in angle in the cross-section of a vessel’s hull. If you are looking at a boat straight on from the front or back, the bottom of the hull can be many different shapes.
Why does a planing hull need so much power?
A such a planing hull has to climb over its own bow wave. This needs a great deal of power because of variation of angle of attack of the hull relative to the water surface. When the vessel on plane, efficiency increases as the hull rises and trims decreases, flattening the wake and reducing form drag.
Why do boats have Chine on each side?
In the simplest design, the chine is simply a corner on each side of the hull that has no effect on performance or handling. Designers found that by adding a “chine flat” on each side they could increase the lift of the hulls. This allowed them to use more deadrise (a deeper-V) with less horsepower.
What happens when a sailboat reaches hull speed?
When you reach hull speed, the bow wave lines up with the stern wave. The two waves double up on you. Your boat appears to sink down into one big wave trough. (Figure 1‑1) The hull speed theory states your sailboat will not go any faster once this happens. If you leave hull speed at this simple theory, you miss all the good parts of the story.
Why does the myth of hull speed persist?
The maximum speed of your hull is an integrated part of the vessel design. It becomes a performance target, strategically decided by the naval architect. Far more complicated than a simple formula. With all the added evidence, why does the myth of hull speed persist. Simply put, designers are not stupid.
Is there a way to break the hull speed limit?
But physicists already imagined theoretical ways to get around lightspeed. And this story has a few good parts that let us get around the hull speed limit. It doesn’t break any rules to go faster than hull speed. If you push beyond the speed limit, the wavelength gets longer than your boat length. No law against that.