Topic: Ship Quiz (Read 1565260 times)

The Ferry Man · « **Reply #7175 on:** July 15, 2010, 22:39:59 »

What do you mean by float more?

saltydog · « **Reply #7176 on:** July 15, 2010, 22:41:20 »

Where do they have more buoyancy..?

The Ferry Man · « **Reply #7177 on:** July 15, 2010, 22:43:35 »

Resists urge to look in Naval Archtecture textbook...

Lets work this out...

Salt water will be more dense, and will thus need less water displaced for the mass, meaning the vessel will be higher, with a smaller draft, meaning more likely to tip over...

saltydog · « **Reply #7178 on:** July 15, 2010, 22:48:36 »

Here's a picture to illustrate: a guy reading the paper in the Dead Sea (very salty)

The Ferry Man · « **Reply #7179 on:** July 15, 2010, 22:50:33 »

So salty water is more bouyant...

saltydog · « **Reply #7180 on:** July 15, 2010, 23:15:15 »

Yes, a ship leaving a fresh water port will be higher in the water when she reaches sea..
I have no idea by how much..

matt5674 · « **Reply #7181 on:** July 16, 2010, 03:40:45 »

Here is my theory of how higher up ships are in the three different waters.
Control (Open Sea water):

Fresh water (Titanic is a bit higher):

and Salt water from Dead Sea:

For the last one, if Titanic sank in the Dead Sea, she would just keep floating. Picture a car crashing into the Dead, and floats across it

jaankotkas · « **Reply #7182 on:** July 16, 2010, 06:38:29 »

Name that ship

Or is it space shuttel

oceandream · « **Reply #7183 on:** July 16, 2010, 15:00:36 »

ocean village 1

RYAN123 · « **Reply #7184 on:** July 16, 2010, 15:57:07 »

Ocean Village Two

saltydog · « **Reply #7185 on:** July 16, 2010, 16:16:51 »

Seems pretty obvious..

The Ferry Man · « **Reply #7186 on:** July 16, 2010, 16:18:57 »

Quote from: saltydog on July 15, 2010, 23:15:15

Yes, a ship leaving a fresh water port will be higher in the water when she reaches sea..
I have no idea by how much..

It depends on the temperature - warm (Salty) water is less dense

clanky · « **Reply #7187 on:** July 16, 2010, 16:47:56 »

The density of sea water is generally taken as 1025 kg/m³, were fresh water is 1000 kg/m³, as TFM says it varies slightly with temperature, but not enough to matter in terms of draught.

If you look at a ships draught marks there are separate marks for fresh water and sea water as ships loading in fresh water are allowed to load a little deeper knowing that they will rise a little when they get to sea.

saltydog · « **Reply #7188 on:** July 16, 2010, 16:57:27 »

Yes, just found an interesting article about that..
Here's a picture of a waterline (load line) marking on a cargo ship, with beside it markings for different waters..

# TF â€“ Tropical Fresh Water
# F â€“ Fresh Water
# T â€“ Tropical Seawater
# S â€“ Summer Temperate Seawater
# W â€“ Winter Temperate Seawater

saltydog · « **Reply #7189 on:** July 22, 2010, 18:24:21 »

Name a "Lavender Lady"

The Ferry Man · « **Reply #7190 on:** July 22, 2010, 18:28:04 »

Judy Dench?

saltydog · « **Reply #7191 on:** July 22, 2010, 19:51:08 »

I meant a ship..

oceandream · « **Reply #7192 on:** July 22, 2010, 21:13:31 »

a tanker?

saltydog · « **Reply #7193 on:** July 22, 2010, 21:17:54 »

No..Here's a clue: In their heyday the liners of this company had a lavender hull, and for this they were affectionately called by some "Lavender Ladies"..

saltydog · « **Reply #7194 on:** July 22, 2010, 23:57:29 »

To simplify: name of this ship..?

gibby12 · « **Reply #7195 on:** July 23, 2010, 00:13:15 »

Quote from: saltydog on July 15, 2010, 22:48:36

Here's a picture to illustrate: a guy reading the paper in the Dead Sea (very salty)

i dont know how i did this but i got a small swimming pool and filled it with watter and ALOT OF SALT i mean alot of salt and i could stand in the water it was cool and i showd my freinds and now they think im magic

saltydog · « **Reply #7196 on:** July 23, 2010, 03:41:46 »

This belongs in the cookie box, gibby..

Nathan|C · « **Reply #7197 on:** July 23, 2010, 10:16:01 »

RMS Windsor Castle, of the Union-Castle Line?

saltydog · « **Reply #7198 on:** July 25, 2010, 06:52:48 »

Yes, name of this ship..?

The Ferry Man · « **Reply #7199 on:** July 25, 2010, 09:56:36 »

Canberra

Author Topic: Ship Quiz (Read 1565260 times)

matt5674

Nathan|C