Numb Knots II

[Numbknots]

Mike,

I got the registration numbers for the tender for "Numb Knots" this week. How does vynil letters stick to the Hyplon? I would like to make some signage for the Tender too? I am thinking "Numb Knots Too" in dark blue with a font that closely matches the ones made for the bigga boat?

I don't want to make it too big as I will be diving from the RIB and dragging gear and divers over the tubes. Should I consider attaching the Registration numbers to the boat using a "plastic plaque" clipped to the handles? I can send some photos of the tender in the water and on the davit for you to look at.

Tim

PS: dumb question---can I upload pictures to you server or do I have to link to photos stored on my site? My son is supposed to be redoing my site so I can use it for photos (hasn't done it yet)

[SomeSailor]

I don't think you'll have much luck with vinyl on Hypolon for long. Rubber is pretty hard to stick to. Best case would be a placard. I have some white polycarbonate that's great for that. How big would you want them and what sort of clips would you be using? Probably some stainless clips (like those that hold boat hooks) would be best?

Too bad you don't have an aluminum area somewhere.

The pictures in the gallery are free to everyone. Help yourself. Leave Bob a message in the Gallery Guy section if you have any questions on how to upload them (but I thought you already had?).

[Numbknots]

Mike,

I am at the boat now and plan on making some rigging today. I will see what size will work best for placard for Registration numbers? I doubt that I will have room for both the reg numbers and the "name signage".

The registration number is DOL #WN4940NS

As for the uploading I will give it a go in a few, I do think I did ask Bob for the proceedure a while back (must be loosing a few brain cells everyday) anyone got a plug? :o :oops:

Tim

[Numbknots]

SS,

Here's the dingy on the davit:

http://gotorandall.com/photos/IMG_3733.JPG

[bradvo]

Tim, great set up there ya have with the Tender. Good Chioce. I have the Caribe, has that nice rake to the hard bottom as well to take the rougher water. I like that.
Brad

[Go Aweigh2452]

I thought it was bow sonar... ;)

[SomeSailor]

SS,

Here's the dingy on the davit:

Looks great Tim... a bit overpowered though?

http://www.iboatnw.com/gallery/data/media/11/CaribeUpgrade.jpg

[Numbknots]

SS,

Nah, It is well balanced considering the co-effiecient of thrust to drag and the fact that it will be used for getting to divers that I have dropped off, in the current and need to be able to fetch them from the shipping channels?

I will be looking to you for all of my future modifications (can you convince the Marina to allow me to put the "shortened Tolly" into a 50ft slip!! The management wants me to pay a launch fee every time I bring the tender to the Marina (give me a brake)!! SORRY FOR THE RANT!!

Tim

PS: I just managed to figure out how to "FTP photos to my domain server" (with the help of my Son) He hasn't had time to get my site back up and running so I will be linking future posts to my FTP directory, and uploading some to the Gallery (as soon as I finish killing a few more alligators!!)

[SomeSailor]

I always thought there might be a market for a davit that could tilt itself further forward (over-extend for lack of a better term) and actually bring the dinghy in above the transom and inboard.

Would fit lots of you guys in smaller slips :)

http://www.iboatnw.com/gallery/data/media/11/SwivelDavit.jpg

[Tedster]

I have no idea how you intend to make that work unless it pivots like a 45/47/490 davit pivots and those don't fit on swim steps. :|

[Numbknots]

SS,

Sounds like a great idea!!! Everything is impossible till its done

Tim

My

[bradvo]

It looks dyslexic , oh you wanted it mounted so it would drop the tender in the water :D
But the drawing is great.
Brad

[Tedster]

Yup Brad that is how I saw it working/not working! :roll:

[SomeSailor]

Yup Brad that is how I saw it working/not working! :roll:

You're just not getting it Ted...

The problem with Tim's... and many others is they are a full 4-6 ft over length when you add a dvait like that.

Wouldn't it be nice to have a davit that could pivot around and set the dink (temporarily) over the transom area? The dink would have to come up and in "endwise" between the arms of the davit, but could be turned once inside I'd imagine. You'd then still fit in your "normal" sliplength. It would pay for itself in short order.

Never say never Ted... your myopic viewpoint is all that's stopping you from great things my friend. :D

[Numbknots]

SS,

I think you are onto something. It would solve a lot of problems for a lot of folks, The fork davit is really great for launching the tender, it takes all of about 20 seconds to get the rig in the water, it can also be done in rough water. If anyone of you have ever tried to launch a tender from the "upper deck" on a swing davit in rough weather or even get hit by a 'ferry wake' have experienced what I am talking about.

Many of the yacht manufactures are even swinging the swim platforms for the the same reason, saving $$ on moorage. In the PNW moorage of over 40ft is getting really pricey (if even available) and the typical 60ft slip is a loooong wait list.

Keep working on your idea, your inventive thinking will be the thing that keeps you "successfully unemployable".

"Myoptic", is that like having only one eye??? I love big words

Tim

[Tedster]

SS don't you feed me with your usual BS I just said that by your diagram I don't get how it would work. The idea itself is ok even though it would restrict the use of the cockpit over 90% of the time, but yes it would reduce the length overall of the moored boat. :roll:

And as far as doing great things, why I'm already doing great things and getting paid very well for doing it.

[SomeSailor]

Not trying to feed you anything Ted. It's just that you're not even trying to see what it is I'm talking about.

I'm talking about a davit made a lot like a standard davit. Two arms that pivot a dinghy in and out of the water with a winch. What I'm suggesting is a davit that's built a little stronger, that has one arm that pivots 180 degrees. This arm could then pivot about and pick the dinghy from alongside or behind, and deposit it in or above the cockpit.

Yes. It would block most of the cockpit. But, the idea is to be able to keep his boat in his smaller slip and provide a way to get the dinghy up and in.

This one pivoting arm would be locked to the "normal" arm, just below the "knuckle" and could use a hydraulic cylinder or even a locking bar to hold the angle, and the normal winch used to lift the dinghy would still be used.

I used the word myopic, because it often describes your view of things. Instead of questioning "how" something might work, or providing constructive criticism on a design or implementation, you just flap your gums about things that "Can't be done". Ever seen a fold-up cherry picker? Would work much the same way.

In this image, it's fixed mounted to make drawing it simpler (I'm not through that first cup this morning), but it would normally hinge at the bottom and raise & lower with the other arm (non-pivoting).

http://www.iboatnw.com/gallery/data/media/11/SwivelDavit2.jpg

[Go Aweigh2452]

Well, I think my next boat won't have that concern at all. But it also be a long time before I get it...

The Compton 33 has what I want... saw one at Deer Harbor and fell in love with it... It can store your dingy under the rear deck! Size would be up to a fully-inflated 9’ 3” Avon, ribbed, hard-bottom dinghy or various other dinghies of solid or inflatable type

http://yachtworld.com/leaving_yw.cgi?url=http://www.comptonmarine.net

[SomeSailor]

WOW...

THAT is a nice boat! What a nice wide boat too... ya won't be trailering her around... :) What's the price point?

Here's the best part:

Twin Cummins QSB 5.9 Electronic Turbo Diesels

* 380 BHP @ 3000 rpm c/w IRMZF 220A – 1.75 to 1, 10° down angle marine transmissions

[Go Aweigh2452]

Well, since almost everything is already standard, the price is up there but here is the break out from Bellingham yachts:

Twin Yanmar 315HP 6 LPA 4.2 STP Turbo Diesels..............342,305

Twin Cummins 330HP 6BTA 5.9 Turbo Diesels..................341,995

Twin Cummins 330HP QSB 5.9 Electronic Turbo Diesels........346,080

Twin Cummins 380HP QSB 5.9 Electronic Turbo Diesels.......$351,000

You're right about the 380's... sweet! (and twin skegs make it a must up here for me)!

[Numbknots]

SS,

Might want to move this to the "below the water line", (No pun intended) to keep on the subect of graphics??

but I did se a davit that was mounted below the waterline to free up the swim step? I am not in favor of any more "holes" below the waterline.

1) It is apparent that at least in the PNW that most boats sit for better then 9 months a year and some more then that? We pay a lot of moorage so certainly it would have a payback if we didn't have to rent a longer slip just for the tender.

2) Many folks don't have the luxury of a storage place or trailer for their tender at home. Heck I am working to get rid of the homes!

3) SS, Now I see what you are talking about with "one" arm allowed to pivot. The challenge is to build the unit strong enough, with enough HP to lift the weight at the "extended arm moment", uncomplicated enough to be maintainable and at a price point attractive enough to be profitable.

I can't wait to get my new "toy" welder so I can start making toys, models and Dreams----

I am looking at the contruction of the transoms on many yachts to see about how they could be "strengthened to better utilize the space for "davit mounting". Typically the swim steps of at least older boats were just a bolt on shelf designed only for easing ingress and egress. Do to the moorage shortage, many new manufactures are either swinging or making swimsteps/bowpulpits optional.

[Numbknots]

SS,

Might want to move this to the "below the water line", (No pun intended) to keep on the subect of graphics??

but I did se a davit that was mounted below the waterline to free up the swim step? I am not in favor of any more "holes" below the waterline.

1) It is apparent that at least in the PNW that most boats sit for better then 9 months a year and some more then that? We pay a lot of moorage so certainly it would have a payback if we didn't have to rent a longer slip just for the tender.

2) Many folks don't have the luxury of a storage place or trailer for their tender at home. Heck I am working to get rid of the homes!

3) SS, Now I see what you are talking about with "one" arm allowed to pivot. The challenge is to build the unit strong enough, with enough HP to lift the weight at the "extended arm moment", uncomplicated enough to be maintainable and at a price point attractive enough to be profitable.

I can't wait to get my new "toy" welder so I can start making toys, models and Dreams----

I am looking at the contruction of the transoms on many yachts to see about how they could be "strengthened to better utilize the space for "davit mounting". Typically the swim steps of at least older boats were just a bolt on shelf designed only for easing ingress and egress. Do to the moorage shortage, many new manufactures are either swinging or making swimsteps/bowpulpits optional.

[SomeSailor]

There are lots of reasons that I could see why it would be of value. It could be used to hoist in a diver, or gear... heck even a crab pot :)

Depending on what the design specification and function, you could build it to do many things. As far as strength... it'd be no more stressed than if it were lifting the dinghy in any other manner.

Lots of one are davits out there. The second arm would just be to stabilize the whole mess and put up with the bouncing when stowed normally and underway.

Here's another approach. Modifying a cradle design to provide temporary stowage of the dinghy on/in the cocpit.

http://www.iboatnw.com/gallery/data/media/11/SwivelDavit3.jpg

From a money perspective... I don't know what 4-6 extra feet of moorage costs a year... but a $1000 worth of stainless would pay for itself pretty quickly in any case.

[Numbknots]

SS,

Now if $ is not an object you could have your yacht built with a garage with a hydraulic lift such as is the case with this one:
http://gotorandall.com/photos/tendergarage.jpg

I think the Deck hands are the "guys" and the yacht tenders are the "Gals"

About 15 years ago the former CEO of bayliner had a motor yacht built in Pt. Townsend by Admiralty boatworks that had a similiar garage for if my memory serves my right a 26ft bayliner "launch".

Dream on,

Tim

[Numbknots]

SS,

Hmm, If you pick the unit up from the rear and then transition to the fore/cockpit perch, isn't the dink now slung from the inside (as is mine) how would you propose to transition from the cradle configuration to the sling configuration? Or are you talking about (two) seperate operations, I could see the posibility of perhaps "rotating" the position of the "arms" 180 degrees? As for the winch rating? My unit has a 2500lb winch and it is nearly maxed out when the dinghy is "1/2 way through the pick, and I am only extended over the back of the swimstep aproximately 28"?

Tim

[SomeSailor]

In either configuration, it would have to pivot around. You could pick the dinghy from the side, or the back if the other arm could remain lowered.

In the first picture, that one would be pinned in a fixed angle most likely with a jury strut. This angle would replace the natural angle the davit would have (maybe same strut with different tangs?). Then, you could use that one arm (the pivotting arm) as either a standard davit... or a locked "cherry picker" or "jib crane" type of affair.

The jury strut would then allow the winch to lift only the dinghy's weight. The arm would have to be locked in place. I have it slightly off vertical, but you'd probably want the main pole vertical. It would act like a small jib crane in that configuration. You could even articulate it to move the dinghy in pretty much any position once in the air.

Here's another pic of what I mean:

http://www.iboatnw.com/gallery/data/media/11/SwivelDavit4.jpg

[Numbknots]

Mike, Back to my original post about adding signage/reg numbers to the tender?

Do you think that you could cut a Yynil "Numb Knots Too" in a font that resembles those on the Mother ship without all the added stuff and I could place them on the "Aluminum hull of the RIB (at the upper flat surface of the hull above the first chine)behind the rope that is hanging over the side?

(Dang if I can find the stinkin 2006 tag that goes with the reg number assignment I received when I titled the tender)--still lookin

Tim

http://gotorandall.com/Boats/Numbknots4.jpg
http://gotorandall.com/photos/IMG_3733.JPG