[Yamaha 9.9 4 stroke]

Just be careful as some yards will have a minimum length restriction.

Thanks Matt but I'm trailering it so mooring restrictions aren't a concern.

 

Regards.

Mark.

[Yamaha 9.9 4 stroke]

Hello Mark,

My business partner uses a product called Simply Green when he removes his boat from the water on his travels.

It gets the algae and any marks off of his boat.

On our boat we use Muck Off for cleaning the hull but because it is always in the water other than coming out for its winter service it is antifoulled.

Regards

Alan

Thanks Alan.

 

Muck Off is good - I've used it on my off road motorcyles.

 

.

Mark.

[Yamaha 9.9 4 stroke]

No, nothing to do with poultry Mark, though a lot of people do spell it as "antifowl"

 

It's the paint used up to the waterline on hulls that resists algae and crustacean growth.

 

It comes in two types, "hard" and "eroding".

 

Eroding wears away gradually, giving no grip to the growth, and Hard is a Teflon like surface that is a smooth enough finish to resist the growth without wearing off.

It was painted by the previous owner so not sure if it is antfoul. The tin of paint did come with the boat and is marine spec so I can have a look what it says on the tin later today. 

 

Does it need to be antifoul? It will only be on the water while we're using it and sat on my garden the rest of the time.

[Yamaha 9.9 4 stroke]

If Vetchugger is uncertain of which Norman it is, then it must be a tricky one to be sure of.

 

I'd say it's definitely a planing hull though, the Transom has a deep V and large flat underwater area.

 

Also, the narrow hard edged ridges in the moulding under the bow chines are "spray chines", which deflect spray when it's right up on the plane. They're never found in displacement hulls.

 

(By the way, the antifoul has been painted to way above the waterline, by maybe 6" or so.)

Many thanks for all the info.

 

Excuse my ignorance but what exactly is antifoul? Sounds like something to deter chickens!

 

As regards the length I'll get my tape out tonight but it's difficult to measure. The previous owner advertised it as a 20 but these are supposed to be 4 berth - two up front & two under the canopy. Mine would accomodate two people in the back as long as they were no more than about 4ft tall!! This makes me wonder if Vetchugger may be right about it being 18.5'. Makes no difference to us though as it's just for the wife and me and two small dogs but I would imagine it could make a difference to insurance costs and tolls?? 

 

Regards.

Mark.

[Yamaha 9.9 4 stroke]

Have you any more pictures of the topsides Macroft? I have a wee suspicion that yours may actually be a Norman 18.5!

I haven't no but I've seen plenty of pictures on the net of 20s and they do look identical to mine. What makes you thinks it's 18.5? Can you tell the hull type from those pics? Regards, Mark.

[Yamaha 9.9 4 stroke]

When you click to reply, the first "reply" box has a button under the bottom right hand corner "more reply options".

 

When you click that, a bigger edit box opens with "attach files" underneath it.

 

click the "browse" button to select the image file on your computer, then click "attach this file".

Thanks - here goes.

[Yamaha 9.9 4 stroke]

It can be difficult to tell without seeing the underwater part of the hull.

 

The biggest clue with motor boats is how far the transom extends below the waterline. On planing boats it's usually quite deep and boxy, to provide the buoyancy to support the weight of the engine(s) when planing along with it's weight at the stern.

 

That causes a very blunt and abrupt end to the flow of the water past the boat at slower displacement speeds, giving much more drag as the water rushes up to fill the void.

 

Displacement craft are much more streamlined at the stern, to cut along through the water with minimal drag. Even though most displacement motor cruisers still have large flat transoms, very little of it extends below the water line.

 

These two views show both types of hull from below the surface.

 

Although the displacement one is of a sailing yacht, the same principle applies, there's little or no flat transom below the waterline.

Looking at those I'm pretty sure it's a planing hull. How do you upload photos on here? I could post a pic of the hull if I could find out how.

[Yamaha 9.9 4 stroke]

Mark.. if the hull is shaped like a traditional boat (imagine "HMS victory") then's its a displacement hull.. if it looks like a little speedboat then it's planning or semi planning..

 

Heres the wiki link:

http://en.wikipedia.org/wiki/Hull_(watercraft)

 

Strowager is right a Norman appears to be a planning hull.. (There's only soo much google imaging I can get away at my desk in work ) 

I think you're right! To be honest I only intend to use it on The Broads so as long as it will push along at 4-6 mph without struggling then I'll be more than happy.

[Hello]

Welcome - and enjoy your boat - as I'm sure you will, having been taught to be cautious and that

Yes - I was taught to be cautious!

[Yamaha 9.9 4 stroke]

Thanks for great comments. Being new to boating I can't tell the difference between planing and displacement hulls. Is there a way that can identify which it is? Thanks. Mark.

[Yamaha 9.9 4 stroke]

My "new to me" Norman 20ft has a Yamaha 9.9hp 4 stroke outboard. Has anyone had experience with this motor on The Broads? I've been told that it's up to the job but has it any limitations? Just say we had to go against the tide at full ebb down at Yarmouth - not something I plan to do but would it cope? Regards and thanks in advance. Mark.

[Hello]

Yes, the slip at Sutton Staithe is another option but what I like about Richardson's is the ample secure parking. 

[Hello]

I got a Norman 20ft on a trailer which I intend to launch from somewhere like Richardson's as much as possible.

[Hello]

Hello all! Had our first holiday on The Broads back in June and enjoyed it so much we've now bought our own boat. Looking forward to knowing you all. Best regards. Mark.