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Sailing

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

2,485 Questions

Is there a unsafe speed for a sail boat?

Monohulls have a maximum hull speed that they will simply not sail faster than - while the hull speed of a particular vessel may be slightly more or less than the estimated hull speed, based on unique characteristics of the hull, this number is still, essentially, a constant. The following formula is an estimate of that hull speed.

Hull Speed = 1.34 * (LWL)1/2 where LWL is the length of the hull at the waterline.

The hull speed is, we should note, the speed *through the water* - ie., if you are travelling down a wave or with a current, your speed relative to shore may be higher.

A multihull boat - like a catamaran or a trimaran - is most often exempt from this limitation because they are non-displacement or "planing" hulls: that is to say, that as a catamaran goes faster, it lifts farther out of the water. At very high speeds, this can result in instability and control issues, though with larger cats it's fairly uncommon or them to actually tip over.

The maximum safe speed, however, is largely one of conditions: sea state, wind speed, and the experience of the captain and crew.

To answer your question another way: there's an unsafe speed for *anything* - depending on conditions and surrounding obstacles - but the dangers involved in sailing are mostly not associated with exceeding any sort of imaginary speed limit.

What did sailors wear?

Blue dungarees, white t-shirts, and blue and/or white sailor's hats, shoes optional.

Pulling down on a rope to hoist a sail on a sailboat is an example of what?

This is referrred to as exercising a simple machine called a pulley.

Is 'jibe' a word?

Yes. It means an insulting or mocking remark; a taunt

'Jibe' has more meanings than that: The nautical parlance (nomenclature) meaning is to turn away from the wind, performing a tacking manuever.

Also: to coincide, or be comparable: as in: "The facts don't jibe with the evidence at hand".

Definition of speed?

"Speed" can be either a noun or verb: Please see the related link below:

What vessels always have the right-of-way?

The is ONLY one instance where a vessel truly has the right of way in Navigation Rules. Rule 9, in a narrow channel or fairway.

Right of way at sea is a mistake by misinformed persons, there are "burdened" (Give way) vessels and "privileged" (stand on) vessel.

There is NO law of gross tonnage.

Please refer to the link provided below.

State that an unstable ship may loll to either side?

An unstable ship may indeed loll (sailors usually say 'list') to either side.

What are the dangers of offshore and onshore winds?

Offshore winds will blow the unwary captain onto shoals or reefs.

Onshore winds will blow the unwary captain away from his next landmark or landfall.

What is a foil luff jib?

It is a track that the jib slides up. It is designed to reduce windage and usually has two tracks allowing you to hoist a smaller foresail while still keeping the other in the air. You can then lower the other (or "peel") the jib.

Signal of power driven vessel at daytime?

There are many signals a complete list cam be found in the rules for avoiding collisions at sea

What does sailing around the horn mean?

It means to sail around Cape Horn, Africa. Ships or captains that have completed this challenge are referred to as "Cape Horners".

Erroneous! The southernmost point in Africa is the Cape of Good Hope. Cape Horn is the tip of South America, and a much more dangerous passage, even these days.

What is the sailboats acceleration if a sailboat and its crew have a combined mass of 655 kg If a net force of 895 N is pushing the sailboat forward?

newtons is a measurement of force

just substitute that for the sign "N"

so you say that there is 895N per 655kg, so 895kg*m/s*s/655kg

then you cross out the "kg" and do the math, not too bad

What is nautical gate?

Gate is an archaic dialect of the word 'gait', meaning method or style. Thus, a 'nautical gate' is a sailor's style of walking or marching. The most well-known use of the word is in Cream's song Pressed Rat and Warthog, where there is a play on the word's first usage, to the second usage where 'The bad captain madman had ordered their fate. He laughed and stomped off with a nautical gate. The gate turned into a deroga tree and his peg-leg got woodworm and broke into three'. The second usage infers a wooden swinging gate, as would be the case if one had a wood leg. Here the captain's arrogance and bad karma caught up with him as one's fate tends to do.

What is red buoy under inland rule?

A port or starboard buoy depending on what region you are in