Parker Ribs

Andre · 13 July 2018, 12:33

Parker Ribs

I see that the thread about RB verses RC has developed and they are some questions concerning all rib manufacturers which would also include us. Not to be accused again for high jacking a thread I have opened a new one since I am a trade member I can write what I please about our product.

Firstly, Xk59D you say manufacturers (and this would include us) do not show rib drawings on their sites. We do but not for every model. Perhaps I should upload more.

GuyC, good to meet you at Seawork last week. I have two projects going on the continent with two separate design offices for super yachts (with sail) and the requirements are for an 8 mtr twin diesel and 7.5 single diesel. These would be under deck and drawings even CAD have been provided for both models. I am sure other manufacturers would do the same if the right question was popped.
As for the underdeck construction, how many of you know what the underdeck looks like on your own rib. I have a system in place that from the moment the lamination starts on the hull of a new order, photos are taken and uploaded every Friday afternoon to a dedicated dropbox and a link is sent to the Buyer. The photo files are dated in a weekly order and include every stage of production, sea trials and up to the moment of the shrink wrapping and even from the port packed and secured on a 40’ container. Occasionally I will take a screenshot from the CCTV which is shown to me from the factory via skype. I then send this to the Buyer who can see at that very moment from the comfort of his office or home the actual stage of production. Most of our work is export but not to the UK.
I have attached photos of the underdeck construction of a typical Baltic hull. The first two photos are of the same Baltic cabin hull and show marine ply being used underdeck. Photos 3, 4, & 5 show a 10 mtr Baltic hull for twin outboards where no timber was used in the production of this rib. This is a very high-density foam.
The tube for this 10 mtr Baltic rib was mechanically fitted and it was the very first time we had done such especially there were no modifications to the mould / hull and all the fittings whether for the inside or outside are interchangeable.

willk · 13 July 2018, 21:30

Quote:

Originally Posted by Andre

As for the underdeck construction, how many of you know what the underdeck looks like on your own rib....

There are many underdecks, but this one is mine...

GuyC · 13 July 2018, 23:00

Quote:

Originally Posted by Andre

Parker Ribs

how many of you know what the underdeck looks like on your own rib.

Too well and for too long - getting there slowly though.

GuyC · 13 July 2018, 23:04

Bit more thread creep

The inside of an Atlantic 85 at the RNLI ILB site in East Cowes.

They build them the right way up, not as depicted in the photo!

Fred. · 14 July 2018, 01:41

Quote:

Originally Posted by Andre

Parker Ribs
I have attached photos of the underdeck construction of a typical Baltic hull. The first two photos are of the same Baltic cabin hull and show marine ply being used underdeck. Photos 3, 4, & 5 show a 10 mtr Baltic hull for twin outboards where no timber was used in the production of this rib. This is a very high-density foam.
The tube for this 10 mtr Baltic rib was mechanically fitted and it was the very first time we had done such especially there were no modifications to the mould / hull and all the fittings whether for the inside or outside are interchangeable.

Sorry, if this is a daft question, but where do your fuel tanks go
(I asumed there would be a central slot like Willks for the fuel tank or do you have 2 ??)
& when does your service ducts etc go in ??
Cheers

Andre · 14 July 2018, 06:36

There are 4 fuel tanks spaces 2 x 120 L and 2 x 220L side by side and that is the max for the 900 and 1000 models. We will not compromise the strength of the hull just to have larger tanks

Andre · 14 July 2018, 06:38

I will post a photo this evening showing the service ducts . They go in prior to the deck being installed

Andre · 14 July 2018, 07:07

I forgot to mention - good examples of different underdeck arrangements [emoji106]

Poly · 14 July 2018, 09:52

André - do you still use wood or have you gone foam cores?

Willk - I thought you were woodfree but there is a sheet of osb type stuff at the anchor well bulkhead - is that temporary?

willk · 14 July 2018, 10:27

Quote:

Originally Posted by Poly

Willk - I thought you were woodfree...

I may be getting on a bit but I still have my moments!

Think the ply was a template. That's not the anchor locker - the compartment being formed is a sacrificial bow zone. In the event of a debris strike this would flood but preserve the integrity of the internal spaces. I haven't tested it yet

The actual anchor locker is above decks:

willk · 14 July 2018, 12:48

Quote:

Originally Posted by Fred.

(I asumed there would be a central slot like Willks for the fuel tank...)

The central slot on mine was later divided into tank space (single 450L+) and form a cabin sole. One "steps" down into the interior allowing full sitting height.

Quote:

Originally Posted by Andre

We will not compromise the strength of the hull just to have larger tanks

Good point - the stringers in my hull are approx. 60mm thick. They were specced by a naval architect in the Irish Department of Transport to allow her be commercially coded - ultimately as the first "open" RIB to hold the coveted P5 licence allowing her access offshore islands previously the preserve of fully decked wheelhouse boats.

Andre · 15 July 2018, 07:00

Quote:

Originally Posted by Poly

André - do you still use wood or have you gone foam cores?

?

Poly see my first post. We use both and for that particular rib zero timber was used

Poly · 15 July 2018, 13:09

Quote:

Originally Posted by Andre

Poly see my first post. We use both and for that particular rib zero timber was used

Ah ok, I see it now I’ve zoomed in. I though there was grain on the sides but see now it’s just dirt, writing etc.

Orwell boy · 15 July 2018, 14:55

Quote:

Originally Posted by Poly

André - do you still use wood or have you gone foam cores?

Willk - I thought you were woodfree but there is a sheet of osb type stuff at the anchor well bulkhead - is that temporary?

Is it safe to say all uk rib manufacturers have replaced wood with composite nowadays ,i am thnking of investing my money into a uk rib but as i wont be able to afford new ,then i am very concerned about wet plywood and leaky fuel tanks

Pikey Dave · 15 July 2018, 16:14

Quote:

Originally Posted by Orwell boy

Is it safe to say all uk rib manufacturers have replaced wood with composite nowadays ,i am thnking of investing my money into a uk rib but as i wont be able to afford new ,then i am very concerned about wet plywood and leaky fuel tanks

Afaik RC still use ply.

Maximus · 15 July 2018, 17:23

Quote:

Originally Posted by Pikey Dave

Afaik RC still use ply.

The Ply Matrix IS Also covered in layers of Fibre Glass..

....and Bonded to the Deck)

If strength and durability is your thing..looking at the bare hull Weights of different makers (for the same size craft of course!) can also be instructive

Pikey Dave · 15 July 2018, 22:25

Quote:

Originally Posted by Maximus

The Ply Matrix IS Also covered in layers of Fibre Glass..

....and Bonded to the Deck)

If strength and durability is your thing..looking at the bare hull Weights of different makers (for the same size craft of course!) can also be instructive

Aye! But someone will be along shortly to tell you that if the hull is made using the interfusion refried osmosis method, it will be lighter & stronger. Especially if it uses the chanel No5 pyroclastic resin. [emoji849]

Maximus · 15 July 2018, 22:35

Quote:

Originally Posted by pikey dave

aye! But someone will be along shortly to tell you that if the hull is made using the interfusion refried osmosis method, it will be lighter & stronger. Especially if it uses the chanel no5 pyroclastic resin. [emoji849]

:d.....

gpsguru · 15 July 2018, 22:46

A lot of fishing type boats are now using glass reinforced Nidaplast for both the stringers and the floor. However, ply reinforced stringers should last just as long provided the job is done properly ...........

Andre · 16 July 2018, 08:23

Quote:

Originally Posted by Fred.

Sorry, if this is a daft question, but where do your fuel tanks go
(I asumed there would be a central slot like Willks for the fuel tank or do you have 2 ??)
& when does your service ducts etc go in ??
Cheers

The first photo shows the under deck of a 900 Baltic Cabin rib with 2 x 250 L stainless steel fuel tanks . Marine ply wood is used here

The second photo shows the under deck of a 1000 Baltic where no timber whatsoever was used in the construction. The fuel tank bulk heads are light and there will be 4 stainless steel fuel tanks 2 x 120 & 2 x 220