[Scape]

QBall QBall:

Scape Scape:

The screws are to high because the weight of the traffic isn't as heavy as the design was intended for. Thus they end up sucking air instead of churning water. A cheap fix would be to extend the screws.

Or add ballast.

Won't work, they tried with 18 gravel trucks and it still didn't sit low enough in the water.

[Freakinoldguy]

BartSimpson BartSimpson:

Would it really be too much to ask that the wonderful ship yards at Esquimalt be rehabbed to allow modern ship construction? Why did BC have to send out to Germany for something that could have been built better at home?

Unfortunately it would. Yarrows has been gone for years and the property now belongs to DND who have no capability to actually build ships.

Just as an aside. All the major shipbuilding facilities on the west coast now belong to the Washington Marine Group............an American company.

They bid on the ferries but were told that they would likely incur to many cost overruns their work force wasn't geared to build ships that big etc etc etc.

Personally I think it was a political move, given the fact that:

$1:

After a change in leadership, the new Premier of BC, Ujjal Dosanjh, placed the ferries up for sale. A subsequent election virtually eliminated the New Democratic Party from the legislature, and Gordon Campbell of the BC Liberals auctioned off the PacifiCat fleet on March 24, 2003 for $19.4 million ($6.5 million/vessel) to the Washington Marine Group. Further controversy erupted when it was revealed that the same company had offered $60 million for the vessels prior to the auction.

So given Gordo's penchant for trying to look good while screwing the people of the province, building the ships on this coast was never an option.

[sandorski]

Ya, we should just build a Bridge. If the Islanders complain, fill in the Straight and say "Booyah!".

[Gunnair]

BartSimpson BartSimpson:

Would it really be too much to ask that the wonderful ship yards at Esquimalt be rehabbed to allow modern ship construction? Why did BC have to send out to Germany for something that could have been built better at home?

[martin14]

Scape Scape:

The screws are to high because the weight of the traffic isn't as heavy as the design was intended for. Thus they end up sucking air instead of churning water. A cheap fix would be to extend the screws.

you are assuming the screws point downwards.. i wouldn't

my father was a naval architect, finished his career out in Victoria.
Told me about a nice little vibration that had cropped up on one boat,
from the prop shaft being 3mm out of line.

couple of million to fix, and nary a word published.

we only hear about the big screw-ups.

[RUEZ]

martin14 martin14:

Scape Scape:

The screws are to high because the weight of the traffic isn't as heavy as the design was intended for. Thus they end up sucking air instead of churning water. A cheap fix would be to extend the screws.

you are assuming the screws point downwards.. i wouldn't

my father was a naval architect, finished his career out in Victoria.
Told me about a nice little vibration that had cropped up on one boat,
from the prop shaft being 3mm out of line.

couple of million to fix, and nary a word published.

we only hear about the big screw-ups.

I'm not sure if Scape saw the news story I did, but what he is saying is what was said on BCTV news.

[Scape]

German academic paper warned BC Ferries' needs were hard to meet

$1:

“Some of the Design requirements put forward by BCF had been very hard to fulfill in the final concept,” said the paper by professor Stefan Krüger, FSG employee Heike Billerbeck and Tobias Haack. “Most challenging was the demand for extremely low fuel consumption, low wake wash, and very good steering performance that had to be combined with the requirement for a diesel electric power plant.”

B.C. Ferries also needed the ships to accelerate quickly from zero to the “quite high” speed of 21 knots, it said.

To meet the requirements, FSG came up with “an unconventional propulsion concept” for the propellers and “a completely new hull form.”

21 knots, low wake with high acceleration. Cripes, why not require it run on solar power while they were at it?

[martin14]

I understand the screws sit too high in the water..

so have a look at this, what could be found in 5 mins..


http://en.wikipedia.org/wiki/Image:Ther ... urther.jpg

rudder assembly

http://www.fsg-ship.de/bcf733/3basicdat/inhalt.html

a very basic picture...


good thing this baby is under warranty, cause the props aint going nowhere.

[martin14]

what gets even more interesting ( yes its raining and im bored )

is when you look through the builders product line,

http://www.fsg-ship.de/


looks like the BC ships are the first double ends (ship with props at front and back) that they carry.......

you would think the shipyard that got the job would have some experience
doing this....