Hull Numbers: A shipyards Work

[hullnumbers]

HA HA, IT HAS MY NAME ALL OVER IT ( Not really, you can check the site out if your intrested )

As everyone knows my name here, I will tell you why i choose it. Hull numbers to a ship represents the work and history of a shipyard. It can also show improvements and diffrences between yards such as the V's. The name also got me intrested because it leads me into areas of other things such as maps of the ship.

Anyways i have discovered a website site that you all (Maybe ) like. Its a whole site of shipyards that were in canada. I did my research and found most of the yards that built our fleet. Including yards that built ferries in the 50's or 40's that were retired.

Have fun searching the yards ;D

shipbuildinghistory.com/world/canada.htm

[lmtengs]

They have some facts wrong. For 1, The QoVan was not built in 1972, it was built in the '60s.
And I am 100% sure that the Qo New Westminster wasn't built in 1991.

[hullnumbers]

What are you looking at, you may be in a diffrent place??? Look in VMD and Barrard in the inactive section.

I doubled checked and It's actually all true those years were when they were either stretched or lifted by another yard.

[hullnumbers]

And another thing check out the book SHIPS OF STEEL the answer is there.

[hullnumbers]

Just wondering, does anyone know how the length and beam of a ship work. Another is where it begins and ends, for example the spirits or the northerns. Do we measure from the hull.

[Nick]

Short answer: it depends.

Length over all, or LOA, is from the forward most point to the aft-most point. This would include a bowsprit, railing or other projection from the vessel. Length between perpendiculars, or LBP, is more complicated and has to do with the shape of the hull. Waterline Length is just that, the length of the hull at the waterline.

Beam is simpler... it is the width of the vessel at it's widest point. Usually this is around midships on the main deck.

[hullnumbers]

But on a ferry there is a space on the car deck outside on both sides of the ship, whats that all about because theres space for someone to stand for a rescue. Doesn't that give the ferry a longer breadth??

[Nick]

Yes, it does give a wider breadth. That is included in the "beam" measurement. Like I said, it is a measurement of the width at it's widest point. In other words, the ship were to squeeze between two pylons, what is the absolute minimum separation that must be between the pylons.

[hullnumbers]

Can someone do a quick drawing so i can understand, sorry i sometimes need drawings to see.

[lmtengs]

Apr 25, 2010 18:47:52 GMT -8 hullnumbers said:

Can someone do a quick drawing so i can understand, sorry i sometimes need drawings to see.

That's how, from the way I heard it, Overall works.


And this is breadth.

[hullnumbers]

Thanks Canadian Viking, can you also do a northern too. with the last picture, though, Did you make the line go all the way to the end or the walls of the ship.

[lmtengs]

Apr 25, 2010 19:51:15 GMT -8 hullnumbers said:

Thanks Canadian Viking, can you also do a northern too. with the last picture, though, Did you make the line go all the way to the end or the walls of the ship.

Alllllllll the way to the end.
I don't have any good side photos of a Northern ship, so I'll just post a drawing in a few seconds.

[lmtengs]

Okay, Hullnumbers, this is as good as I can draw

I only have the length shown, because width is the same with both Northern vessels and southern vessels.

Attachments:

[Neil]

I think the method of expressing a ship's length has changed somewhat, at least with regard to what is commonly made available to the public. For instance, if you look at 'Dogwood Fleet', by Cadieux and Griffiths, the Queen of Tsawwassen was, I think, said to be 308 feet long. More recent records gave her length as about 342 feet. 'Registered length', or the distance along the loaded waterline, used to be the common measurement. Now it's usually overall, I guess because people like to know simply how big a ship looks.

[DENelson83]

I thought breadth was called beam by those in the trade.

[hullnumbers]

Thanks guys, I hope to design future ships with this info.

[Neil]

Apr 26, 2010 9:35:14 GMT -8 hullnumbers said:

Thanks guys, I hope to design future ships with this info.

Wow. I didn't know ship design was that easy. Just figure out length and breadth, and away you go. Guess anyone can be a Spaulding.

[hullnumbers]

Can someone do a example beam/breadth drawing too, i under stand length know but the beam is sort of confusing on a ferry, specially with the sides.

Is it normally wall to wall width on the car deck, or the hull wings tip to tip that stick out from the walls that is the breadth???

Sorry if I am repeating myself

[oceaneer77]

Hi guys

For ship construction we dont usual use length over all but LBP length between perpendiculars.. This is the normal registered length of a vessel or documented length.
So its normal the waterline forward and the forward edge of the rudder post aft.

Gross Registered Tonnage GRT is a very major figure in the design of a ship and is placed before length in importance as all regulatory design criteria are based upon GRT.

Service speed and power seem to be the next figure that we normaly deal with,

We never ask for a 555 foot long 333 wide ship that goes Kts.

Oceaneer