Plimsoll Mark / Boot stripe

[Divecoz]

http://education.yahoo.com/reference/di ... oll%20mark ( Off The Net )
We came across this bit of info in of all places a Couples Daily Devotional..

[Phil M]

My wife like to do crossword puzzles, and always asks me about sailing terms. There are lots I have never heard of before, like plimsoll.

[Catigale]

Great physics question for middle schoolers...why are there four load lines on large cargo ships??

[chipveres]

Okay, Mr. Catigale. I'm way beyond middle school but I'll take a swing at it. First there must be a line for maximum loading, and one for minimum loading ballast for stability. Then there is a set for fresh water and a set for salt water with its higher buoyancy.

Am I close?

Chip

[c130king]

Close.


TF – Tropical Fresh Water
F – Fresh Water
T – Tropical Seawater
S – Summer Temperate Seawater
W – Winter Temperate Seawater
WNA – Winter North Atlantic

There are Load Line Marks on both sides of the hull for the above. Each have different densities so the boat will sit higher/lower depending on type of water. There is usually an "A" line as well which marks the height of the deck.

The primary Plimsoll Mark is aligned with the Summer Temperate line. If it has the letters "A B" on it then the lines are set by the American Bureau of Shipping. If the mark has "L R" on it then it is set by Lloyds Registry.

The lines are calculated to display the required freeboard necessary for the ship based on stability calculations.

Just took my Coast Guard Captain's License exams yesterday...this was on it.

Cheers,
Jim

[FinallySailing]

Just took my Coast Guard Captain's License exams yesterday...

Congrats

[Phil M]

Close.


TF – Tropical Fresh Water
F – Fresh Water
T – Tropical Seawater
S – Summer Temperate Seawater
W – Winter Temperate Seawater
WNA – Winter North Atlantic

There are Load Line Marks on both sides of the hull for the above. Each have different densities so the boat will sit higher/lower depending on type of water. There is usually an "A" line as well which marks the height of the deck.

The primary Plimsoll Mark is aligned with the Summer Temperate line. If it has the letters "A B" on it then the lines are set by the American Bureau of Shipping. If the mark has "L R" on it then it is set by Lloyds Registry.

The lines are calculated to display the required freeboard necessary for the ship based on stability calculations.

Just took my Coast Guard Captain's License exams yesterday...this was on it.

Cheers,
Jim

So what happens when a ship crosses the North Atlantic and enters the freshwater of the Great Lakes? The wreck of the Edmund Fitzgerald?

[Catigale]

Has to loaded for intended route of course...

New question ...how many hen weighs does it take to turn a Colonel into a Captain??

[c130king]

Has to loaded for intended route of course...

New question ...how many hen weighs does it take to turn a Colonel into a Captain??

Don't know how many hen weighs...but it takes a bunch of Benjamins...when does this Charter thing get me back in the black

My guess is 2015...

[prishi]

The Plimsol mark is only on v/ls carrying cargo or passengers and is awarded by the Ship's Register. The Mark may never be submerged, both hog and sag are taken into account. Boats are not ascribed a plimsol mark.