Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 09-09-2022, 20:55   #46
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 4,108
Re: Chain plate sizing.

Quote:
Originally Posted by MicHughV View Post
Besides many other skills and talents, I'm also a licensed Professional Engineer, specializing in structural marine engineering for the past 35 years or so....what's your gig ?
Just for the record, thank you for your past advice: very much appreciated.

It is great to have professional advice on these forums in addition to advice from experienced layman.(Of course you have to be careful to sort out the grain from the chaff)
coopec43 is offline   Reply With Quote
Old 10-09-2022, 06:09   #47
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 4,108
Re: Chain plate sizing.

Plasma-vs.-laser-vs.-water-cutting

https://blog.swantonweld.com/
coopec43 is offline   Reply With Quote
Old 10-09-2022, 10:01   #48
Registered User

Join Date: Mar 2021
Location: Flagler County, FL, USA, Earth
Boat: Lagoon 380
Posts: 1,530
Re: Chain plate sizing.

Quote:
Originally Posted by scherzoja View Post
Two attachments failed to upload. Here they are.


That last pix is where 1200BC meets the 19th century. [emoji847]

All kidding aside, its a relief not to worry with crevice corrosion.
team karst is offline   Reply With Quote
Old 10-09-2022, 13:18   #49
Marine Service Provider

Join Date: Jan 2019
Boat: Beneteau 432, C&C Landfall 42, Roberts Offshore 38
Posts: 7,014
Re: Chain plate sizing.

Coopec43,

I see you are also building a BR boat, A Mauritius no less. I gotta tell you that boat is a personal favorite of mine.

I was looking at some or other video blog about someone building a steel boat, but with modern day autocad and computer controlled cutting technology, all the steel bits and pieces can arrive on your doorstep, precut to precise dimensions. All you got to do is put the pieces together. Sounds easy..right ??

A far cry from my days, when large chunks of steel plate were dropped on my doorstep, form which I had to cut the plates that formed the hull.

Anyhow, my chainplates were all welded on, which simplified the issue. There is much to be said about steel boats, but simplicity and strength is not one of them.
MicHughV is offline   Reply With Quote
Old 11-09-2022, 21:06   #50
Registered User

Join Date: Dec 2009
Location: Australia
Boat: BUILT!!! Roberts Mauritius 43ft
Posts: 4,108
Re: Chain plate sizing.

Quote:
Originally Posted by MicHughV View Post
Coopec43,

I see you are also building a BR boat, A Mauritius no less. I gotta tell you that boat is a personal favorite of mine.

I was looking at some or other video blog about someone building a steel boat, but with modern day autocad and computer controlled cutting technology, all the steel bits and pieces can arrive on your doorstep, precut to precise dimensions. All you got to do is put the pieces together. Sounds easy..right ??

A far cry from my days, when large chunks of steel plate were dropped on my doorstep, form which I had to cut the plates that formed the hull.

Anyhow, my chain-plates were all welded on, which simplified the issue. There is much to be said about steel boats, but simplicity and strength is not one of them.

Well I would have thought that steel boats are the strongest of the lot. But what puts me off is the maintenance. One steel boat owner lamented that he has to be very careful the way he handles gear on the boat as he continually worries about a bit of paint being knocked off and the inevitable rust.

My "experience" with steel yachts is not good. There were three yachts one was a 42ft ketch built in Tasmania (Australia). The owner was a photographer by profession which made me wonder why when he wrote a book about his cruise there were virtually no photos.Then I realized his yacht had no opening ports and the cabin lighting was a kerosene lamp (no navigation lights) I wonder what the toilet set-up was?

The second yacht was being stripped for parts (I wanted the jib furler) and I had to ask if the deck was safe to walk on.

The third steel yacht had sunk off the coast as it had hit a submerged navigation beacon (knocked over by a prawn trawler). After the yacht had been salvaged I inspected it and decided it was barely life sustainable. Sad!

The thing that got me was that the three yachts had done a circumnavigation (or a near circumnavigation)! And where is my yacht?

You say "A far cry from my days" I'll say! Apart from Autocad now they would use "Inverter welders" to weld their yachts. (Apparently far easier to use than stick welders and quite cheap)

coopec43 is offline   Reply With Quote
Old 12-09-2022, 18:44   #51
Registered User

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,501
Images: 7
Re: Chain plate sizing.

Quote:
Originally Posted by MicHughV View Post
Coopec43,

There is much to be said about steel boats, but simplicity and strength is not one of them.
???

Am I reading this wrong.

Having owned and maintained a Bruce Roberts steel design for about 30 years I have two points of advice:

(1) Do not put stringers in your steel boat (It should be a criminal offense to do so)

(2) Use stand-offs between the frames and the hull plates on any of the chine plates which are not vertical. Fully welded diamond shaped pieces of flat bar of various thicknesses are probably the easiest.
__________________
Satiriker ist verboten, la conformité est obligatoire
RaymondR is offline   Reply With Quote
Reply

Tags
chain plate

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
rigging plate hole to edge spacing vs pin size/plate thickness dkenny64 Construction, Maintenance & Refit 6 31-10-2019 19:47
holding plate system sizing gauvins Plumbing Systems and Fixtures 3 30-05-2018 09:01
Does a grounding plate really need a wood backing plate? Wind River Construction, Maintenance & Refit 1 04-04-2017 15:33
Terminology help: Damper plate, clutch disc, pressure plate, drive damper pbmaise Engines and Propulsion Systems 21 21-08-2016 09:52
Bobstay Plate / Backing Plate Question zboss Construction, Maintenance & Refit 15 14-08-2013 10:12

Advertise Here


All times are GMT -7. The time now is 11:21.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.