gordmac
Well-Known Member
"Where does that leave engineers employed in the public sector?"
Not sure public sector pay would stretch far enough to employ engineers!
Not sure public sector pay would stretch far enough to employ engineers!
Is there a maximum size/displacement for ships?
- Thread starter Greenheart
- Start date
NickRobinson
Well-Known Member
SHUG
Well-Known Member
It's a really good question.
Buildings were once limited in height by the compressive strength of brick and stone and are now limitedby the strength of steel. Likewise the span of bridges is limited by the tensile strength of steel. Ships I Dunno!. Maybe the curvature of the Earth creates limiting stresses in the structure. Interesting.
Buildings were once limited in height by the compressive strength of brick and stone and are now limitedby the strength of steel. Likewise the span of bridges is limited by the tensile strength of steel. Ships I Dunno!. Maybe the curvature of the Earth creates limiting stresses in the structure. Interesting.
Portofino
Well-Known Member
Size limet-
Artic floats , ok it's made of ice and does,nt move much - bit unconventional - and impractical in port etc
I think given enough materials , time and £ ,you build a ship 2000 miles long and get it stuck in the N Atantic and walk from Europe to NewYork along the deck
In realality thats unlikely to happen = minimal commercial application -
Artic floats , ok it's made of ice and does,nt move much - bit unconventional - and impractical in port etc
I think given enough materials , time and £ ,you build a ship 2000 miles long and get it stuck in the N Atantic and walk from Europe to NewYork along the deck
In realality thats unlikely to happen = minimal commercial application -
Greenheart
Well-Known Member
I was supposing that a ship which is exceptionally long but not very wide - (although, still broad enough to be stable and practical)...would be as efficient through the water as a rowing 'eight', or a Tornado catamaran...probably much more so.
If cargo/container quantities continue to grow, perhaps long and slender might be more easily driven than the present popular 1:7 beam:length...and maybe segmenting the length could maintain practicality in restrictive port situations.
If cargo/container quantities continue to grow, perhaps long and slender might be more easily driven than the present popular 1:7 beam:length...and maybe segmenting the length could maintain practicality in restrictive port situations.
Greenheart
Well-Known Member
I just heard on the news that it's common practice now for container-ship captains to throttle back a few knots and make a fuel saving...£500,000 per trip from the Far East, I think I heard.
Seems to suggest there's nothing very efficient about current hull design, if maximum speed is only reached by enormous additional fuel thirst, over economical cruising speed - like trying to drive a 30' yacht to go nine knots, instead of the seven she manages with ease.
Seems to suggest there's nothing very efficient about current hull design, if maximum speed is only reached by enormous additional fuel thirst, over economical cruising speed - like trying to drive a 30' yacht to go nine knots, instead of the seven she manages with ease.
mattlad
Well-Known Member
Here's a left field idea.......
Instead of making goods in a factory, storing them in a warehouse, shipping them, storing them in another warehouse at the other end why not manufacture the goods on a ship as it is sailing to its destination?
...... Maybe it's a bit too left field........
Instead of making goods in a factory, storing them in a warehouse, shipping them, storing them in another warehouse at the other end why not manufacture the goods on a ship as it is sailing to its destination?
...... Maybe it's a bit too left field........
boguing
Well-Known Member
Have a google for panamax ships.
That's the limit for anything that doesn't fancy the capes
Another limit is the Canadian sea locks. I have personal s'perience of designing for them.
But to go back to your first question, no, I don't that there is a limit to dimensions from an engineering pov, parking/unloading is the problem.
That's the limit for anything that doesn't fancy the capes
Another limit is the Canadian sea locks. I have personal s'perience of designing for them.
But to go back to your first question, no, I don't that there is a limit to dimensions from an engineering pov, parking/unloading is the problem.