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  Topic Review (Newest First)
05-09-2014 02:04 PM
Re: Rules of thumb

The three minute rule -- at one knot you move 100 yards in three minutes...
05-09-2014 11:57 AM
Re: Rules of thumb

Running a power boat you want at least twice your draft to go more then idle engines. Unless you got wheels.
05-09-2014 11:43 AM
Re: Rules of thumb

A good rule of thumb when anchoring: 5 to 7 times the depth of the water at high tide and if you have to go out to 10 times the depth it is time to find another anchorage.
Plus an anchor light isn't all that bright so light your boat up like a christmas tree to be easier to be seen.
05-08-2014 12:39 AM
Re: Rules of thumb

Originally Posted by SHNOOL View Post
If you'll note none of the ones I gave are ever always true. Glad to see I made my point
That's why they are called "rules of thumb" instead of "facts".
05-08-2014 12:24 AM
Re: Rules of thumb

With respect to chart colours

Sail on the white stuff, anchor on the blue stuff, drink on the brown stuff.
05-08-2014 12:18 AM
Re: Rules of thumb

When will "red right returning" get you into trouble in IALA System B?

Local rules of buoyage (AKA the upstream rules)

- returning from seaward
- moving toward to the headwaters of a river
- entering a harbour
- travelling in the same direction of the flood current.

These can be superseded by the General Direction of Buoyage which is clockwise around continents.
05-08-2014 12:13 AM
Re: Rules of thumb

Never drive over birds standing in the water.
05-08-2014 12:12 AM
Re: Rules of thumb

These are more memory aids

The cardinal (buoy) rules

Western women are wasp waisted, while eastern ladies are elegantly elongated equatorially.


Correcting a compass

Can dead men vote twice at elections.


Uncorrecting a compass

True virgins make dull company at weddings.


Colregs rule 18 and some others

An over night room for sale plus snacks (and whisky)


This is a rule of thumb for going those passes with lots of current

0-3 knots either side of slack- any time
3-6 knots either side of slack - 30 minutes
6 and more - 15 minutes and getting shorter.
05-07-2014 04:08 PM
Re: Rules of thumb

I remember a similar thread in the past.

My contribution was 'Explore on a rising tide.'
05-07-2014 03:25 PM
Re: Rules of thumb

When wielding a hammer, always keep your thumbs out of the way.
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