2007-11-21 03:44:01 · 20 answers · asked by lm 2 in Cars & Transportation ➔ Boats & Boating
why not?
2007-11-21 03:47:01 · answer #1 · answered by Yorkshire Gurlie ♥ 3 · 0⤊ 3⤋
They all don't have circular windows , named port'oles. They have pressurized glass and 'bulkhead' type shutters with wing-screw steel shutters. The usual place to find these port'oles on a ship is usually further down on the hull. The upper decks have square or rectangular windows (ie promenade decks etc)
2007-11-23 15:16:21 · answer #2 · answered by Anonymous · 0⤊ 0⤋
because there will not be weak points at the corners, and the glass is armoured, the amount of weight in a wave battering into the " windows', if was glass from a house then bye bye window and man the life boats
2007-11-24 11:21:57 · answer #3 · answered by Anonymous · 0⤊ 0⤋
A round porthole window is a better shape to stand up to the stresses around it. Ships actually expand and contrant in different temperatures, whether their wood or steel, and a cirlce is the stronges shape when compressed.
2007-11-21 17:05:23 · answer #4 · answered by 80's kid 6 · 1⤊ 0⤋
A curve is stronger tan a straight line. If a porthole was a square it could be easily broken by the sea at a corner
2007-11-21 13:20:39 · answer #5 · answered by Scouse 7 · 1⤊ 0⤋
For Strength and there called port holes>Don't like sharp corners on boats>
2007-11-21 14:47:58 · answer #6 · answered by 45 auto 7 · 0⤊ 0⤋
Same reason plane windows are. Stress. Square windows would tear at the corners. I just saw this on the History channel.
2007-11-21 11:53:11 · answer #7 · answered by Vinegar Taster 7 · 7⤊ 0⤋
the bigger they are the thicker glass are installed in them,some are called dead lights,they have a hinging plate and when closed are locked off,be a bit frightening to see the fishes swimming past with a big square window in a heavy sea.
2007-11-24 19:44:11 · answer #8 · answered by tugboat 4 · 0⤊ 0⤋
It's easier to seal a circular hole than a square one, and there's no corner angles to cause stress fractures.
2007-11-21 13:47:10 · answer #9 · answered by Bandit600 5 · 2⤊ 0⤋
A round window has no pressure points...it's an inherently stronger design.
Same with aircraft...
2007-11-22 00:25:59 · answer #10 · answered by helipilot212 3 · 1⤊ 0⤋
circles are "stronger" shapes than squares, so my edumacated guess is that if the windows dip below sea level, they wont break as easily from the pressure change.
2007-11-21 11:47:42 · answer #11 · answered by Wilson 3 · 1⤊ 0⤋