Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-07-2019, 09:47 AM   #1
Member
 
City: Halifax, Nova Scotia
Country: Canada
Join Date: Feb 2019
Posts: 9
Pilot 34 St Croix Davits on Swim Platform

Anyone install the series 400 St Croix davits on their Pilot 34 using the platform mounts? Seems like a great way to mount davits and still be able to use the swim platform for boarding while the dinghy is on the davits. There are a couple of installation issues I am coming across. I don’t think the transom door will fully open with the platform mounts installed and secondly I think I will have to install hatches in the inside transom liner in order to install backing plates as well as be able to use nuts and bolts to fasten the upper davit bracket. My dinghy is a Highfield CL290 which has a length of 9’6” and I run a 15hp Honda outboard on it. Weight is about 250 pounds so I think it’s well within the davits capacity. Any help appreciated.

Jamie Morrison
2002 Pilot 34 “Foto”
Halifax, Nova Scotia
__________________
Advertisement

JamieM is offline   Reply With Quote
Old 11-07-2019, 12:21 PM   #2
Senior Member
 
danderer's Avatar
 
City: Newark, DE
Country: US
Vessel Name: TBD
Vessel Model: TBD
Join Date: Jan 2015
Posts: 403
The PO installed St Croix davits on my 34T. They were offset to port and with a small dinghy - I had a Highfield CL 260 -- there was room to fully-open the transom door. (I assume the Pilot is similarly configured but I don't know that...)

When installed they did put a couple of watertight plates inside the transom storage lockers to get access to the transom for mounting the upper brackets.

This installation worked well for us.
Attached Thumbnails
Click image for larger version

Name:	IMG_5865-1024x768.jpg
Views:	38
Size:	86.9 KB
ID:	96176  
__________________

danderer is offline   Reply With Quote
Old 11-07-2019, 12:46 PM   #3
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,837
I don't think you could offset the davits like danderer did with his 34T. The beam of the Pilot 34 is almost 2' less than the 34T. I think his installation makes the transom door usable because he probably mounts the dinghy with the bow to starboard which allows more room for the transom door to open. The dinghy may block the transom door when installed on your Pilot 34. It did with Weaver flip up davits on mine.

But in five years of owning our Pilot 34, I never boarded from a dock to the swim platform, always over the gunnel.

Yes the transom has two layers so you will have to install small round access ports to install nuts on the bracket bolts. The PO did this on ours to install a raw water hose bib to the starboard of the transom door.

David
djmarchand is offline   Reply With Quote
Old 11-07-2019, 12:59 PM   #4
Member
 
City: Halifax, Nova Scotia
Country: Canada
Join Date: Feb 2019
Posts: 9
Name:  IMG_4493.JPG
Views: 185
Size:  15.9 KBJust to clarify I want to install platform davits as in hopefully attached photo. The davits would then be at stern edge of the swim platform. The bracing bars on the platform bar blocks the door from opening. Using this option avoids attaching anything to the transom which solves one of my issues. Additional bracing is supplied by St Croix to go under the swim platform. I like symmetry so offsetting one of the davits is a last resort. I could offset the weight of the dinghy by adding some anchor chain in the bow
JamieM is offline   Reply With Quote
Old 11-07-2019, 01:53 PM   #5
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,837
Ok, I see what you are proposing. Look at where you would mount the platform. I suspect it will be directly in back of the transom door and will block the door from opening fully.

Also that is a lot of weight to cantilever out 6' aft of the transom. Is the swim platform up to handling those loads? The Pilot 34 has two SS braces underneath the platform. I would consider installing a pad where the braces fit up against the transom as well as the swim platform to distribute the loads.

But again I have to say you are spending a lot of effort to solve a problem that I never faced when I owned my Pilot 34.

If you have to have lifting davits, then mount them near the transom with a short bracket to the top of the transom to carry the tilting loads. But I much prefer the Weaver davits.

Here is a couple of pics of my boat with those davits. Note the tackle for pulling the dinghy up visible in the first pic from the top of the dinghy to the back of the roof. The dinghy is 9' and the outboard is on a bracket outboard of the dinghy's transom just visible in the first pic.
Attached Thumbnails
Click image for larger version

Name:	Bella at our dock.jpg
Views:	23
Size:	167.8 KB
ID:	96181   Click image for larger version

Name:	Bella elevation shot.jpg
Views:	21
Size:	58.4 KB
ID:	96182  
djmarchand is offline   Reply With Quote
Old 11-07-2019, 02:26 PM   #6
Member
 
City: Halifax, Nova Scotia
Country: Canada
Join Date: Feb 2019
Posts: 9
Quote:
Originally Posted by djmarchand View Post
Ok, I see what you are proposing. Look at where you would mount the platform. I suspect it will be directly in back of the transom door and will block the door from opening fully.

Also that is a lot of weight to cantilever out 6' aft of the transom. Is the swim platform up to handling those loads? The Pilot 34 has two SS braces underneath the platform. I would consider installing a pad where the braces fit up against the transom as well as the swim platform to distribute the loads.

But again I have to say you are spending a lot of effort to solve a problem that I never faced when I owned my Pilot 34.

If you have to have lifting davits, then mount them near the transom with a short bracket to the top of the transom to carry the tilting loads. But I much prefer the Weaver davits.

Here is a couple of pics of my boat with those davits. Note the tackle for pulling the dinghy up visible in the first pic from the top of the dinghy to the back of the roof. The dinghy is 9' and the outboard is on a bracket outboard of the dinghy's transom just visible in the first pic.


Thanks for the quick reply. You have a gorgeous boat. I have to agree that the davits may be too far aft. Unfortunately I would very much prefer using the swim platform to board the boat than going over the gunnels.

My swim platform has 4 stainless struts under the platform. The davits add additional supports under the platform and along the bottom of the platform. They look well engineered.

I guess my second option is to install the davits up against the transom and launch the dinghy when in a marina to clear the swim platform. The davits rotate back out of the way. Again the problem here is the door on the port side. I could mount both davits to starboard of the door and bring the dinghy up bow to port then rotate it on the davits so it is centered on the transom. Not sure if this would work. I should also note that I intend to leave the motor on the dinghy. It’s just too heavy to lift on and off.

I regularly travel in quite heavy Atlantic Ocean swells so lifting the dinghy has high as possible is important. Standing it on its side on the platform would just be looking for trouble.

Jamie Morrison
2002 Pilot 34 “Foto”
Halifax, Nova Scotia
JamieM is offline   Reply With Quote
Old 11-07-2019, 03:21 PM   #7
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,837
Quote:
Originally Posted by JamieM View Post
I regularly travel in quite heavy Atlantic Ocean swells so lifting the dinghy has high as possible is important. Standing it on its side on the platform would just be looking for trouble.

Jamie Morrison
2002 Pilot 34 “Foto”
Halifax, Nova Scotia
The Weaver davits lock the bottom of the dinghy solidly to the swim platform. No boarding wave is going to bother the dinghy.

Another thing you can do is get some stand off bars- I think Weaver sells them. That way you can flip the dinghy vertical or a little aft to clear the transom door. Then when you go offshore, pull it up snug to the transom and tie it down well.


My boat originally came with those bars, but I removed them because I wanted the security of the dinghy raised snugly against the transom. The second picture which isn't very clear shows the dinghy supported a few inches aft of the transom with the bars. These could be made even longer to raise the dinghy near vertical and give you more clearance.


David
djmarchand is offline   Reply With Quote
Old 11-07-2019, 06:52 PM   #8
Member
 
City: green cove springs
Country: United States
Join Date: Nov 2016
Posts: 15
hi,

we've have st croixs installed on the the stern platform/stern rail. we have a 10'6 west marine rib w/15 hp yamaha. when you dock portside to the dock the stern door is fully useable. we've had this setup for 10 years. don't let anyone tell you it's not possible.
__________________
John
GEM 2003 P34
Duetto is online now   Reply With Quote
Old 11-08-2019, 09:24 AM   #9
Veteran Member
 
City: Coral Gables
Country: US
Vessel Name: Tonic
Vessel Model: 2007 Mainship Pilot Sedan 34
Join Date: Mar 2018
Posts: 68
Not exactly what you want to do, but here is our setup. Ours is a 9' RIB with a 4hp outboard and the door is accessible, but not convenient. With the dinghy off, the door opens fully and latches with the davitrotated inward or outward. The davits mount on the swim platform and on the transom top.

An additional issue to consider is with our dinghy on the davits, the boat is slower to plane and requires a bit more rpm to make speed. A heavier dinghy, located farther aft would exacerbate the problem.

Brett
Attached Thumbnails
Click image for larger version

Name:	2015_0904_14364600.jpg
Views:	23
Size:	135.1 KB
ID:	96219   Click image for larger version

Name:	20191011_160210.jpg
Views:	22
Size:	160.5 KB
ID:	96220  
Tonic1 is offline   Reply With Quote
Old 11-08-2019, 10:35 AM   #10
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,837
Tonic1:


Will the transom door open with the dinghy fully up as in your second pic? That seems to be the OP's main criterion.


David
djmarchand is offline   Reply With Quote
Old 11-08-2019, 10:41 AM   #11
Veteran Member
 
City: Coral Gables
Country: US
Vessel Name: Tonic
Vessel Model: 2007 Mainship Pilot Sedan 34
Join Date: Mar 2018
Posts: 68
David,

The door opens to about 90 degrees, then you have to get limber to go under the dinghy and in the door.
Tonic1 is offline   Reply With Quote
Old 11-08-2019, 11:21 AM   #12
Guru
 
djmarchand's Avatar
 
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23
Join Date: Aug 2012
Posts: 4,837
Gotcha, thanks.

It is a bit beyond me why the OP wants to do that rather than step over the gunnel. That boat has a little step inside at the corner of the cockpit and the aft cabin for just that purpose. You just need one of those fiberglass steps on the dock to step up and over the gunnel.

David
djmarchand is offline   Reply With Quote
Old 11-08-2019, 11:40 AM   #13
Veteran Member
 
City: Coral Gables
Country: US
Vessel Name: Tonic
Vessel Model: 2007 Mainship Pilot Sedan 34
Join Date: Mar 2018
Posts: 68
Agreed. Other than at floating docks, the swim step always seems too low for boarding.
Tonic1 is offline   Reply With Quote
Old 11-08-2019, 04:01 PM   #14
Member
 
City: green cove springs
Country: United States
Join Date: Nov 2016
Posts: 15
hi,

here is a pic of our st croix davits with 10'6" rib and 15 hp. stern door is fully usable for boarding from swim platform on the portside.Click image for larger version

Name:	P8240011.jpg
Views:	33
Size:	113.9 KB
ID:	96246
__________________
John
GEM 2003 P34
Duetto is online now   Reply With Quote
Old 11-08-2019, 04:26 PM   #15
Member
 
City: Halifax, Nova Scotia
Country: Canada
Join Date: Feb 2019
Posts: 9
Quote:
Originally Posted by djmarchand View Post
Gotcha, thanks.

It is a bit beyond me why the OP wants to do that rather than step over the gunnel. That boat has a little step inside at the corner of the cockpit and the aft cabin for just that purpose. You just need one of those fiberglass steps on the dock to step up and over the gunnel.

David


My boat is kept at a floating dock at our yacht club that is the same height above the water as the swim platform. My wife has a medical condition that makes her a bit unsteady on her feet and she finds walking across the platform the easiest way to access the boat. She also stands on the corner of the platform when we back into our marina and this allows her to easily step onto the float with the dock lines. We also have a set of steps for boarding over the gunnel, and yes, the mounded steps in the boat are perfectly placed.
JamieM is offline   Reply With Quote
Old 11-08-2019, 04:34 PM   #16
Member
 
City: Halifax, Nova Scotia
Country: Canada
Join Date: Feb 2019
Posts: 9
Quote:
Originally Posted by Duetto View Post
hi,



here is a pic of our st croix davits with 10'6" rib and 15 hp. stern door is fully usable for boarding from swim platform on the portside.Attachment 96246


This looks like a great solution. The curve of the transom brings the bow away from the door. Didn’t think of that one and it saves purchasing the St Croix Platform Mounts if I was to mount the davits at the end of the platform. Looks like ratchet straps securely hold the dinghy in place. It is a bit of a compromise having the boat at an angle rather than flat across the stern but that’s just aesthetics and an opening door is more important to me at this point.

Thanks for sending a pic of your solution. I’m impressed with the replies I’m getting from Trawler Forum.

Jamie Morrison
2002 Pilot 34 “Foto”
Halifax, Nova Scotia
JamieM is offline   Reply With Quote
Old 11-08-2019, 07:25 PM   #17
Member
 
City: green cove springs
Country: United States
Join Date: Nov 2016
Posts: 15
jamiem,

your wife would find our setup very reassuring, since she can use the dinghy for support on one side.

in general, the dinghy needs to be stabilized in all directions. we have a strap from the stern davit to the dinghy transom. this jacks the dinghy against the davit. we have cross straps to bow & stern from the davit and finally a line/tackle to the bow to the boat's stern cleat.
__________________
John
GEM 2003 P34
Duetto is online now   Reply With Quote
Old 11-10-2019, 09:18 PM   #18
Member
 
City: Halifax, Nova Scotia
Country: Canada
Join Date: Feb 2019
Posts: 9
Quote:
Originally Posted by Duetto View Post
jamiem,



your wife would find our setup very reassuring, since she can use the dinghy for support on one side.



in general, the dinghy needs to be stabilized in all directions. we have a strap from the stern davit to the dinghy transom. this jacks the dinghy against the davit. we have cross straps to bow & stern from the davit and finally a line/tackle to the bow to the boat's stern cleat.


Hi Duetto,

Just curious if your St Croix davits are the 1” tube or the 1.25” tube? Quite a price difference between the two. My dinghy weighs in at 250 lbs and the 1” davits support 350lbs so that is what I am looking at.

Jamie Morrison
2002 Pilot 34 “Foto”
Halifax, Nova Scotia
JamieM is offline   Reply With Quote
Old 11-11-2019, 08:41 AM   #19
Veteran Member
 
City: Coral Gables
Country: US
Vessel Name: Tonic
Vessel Model: 2007 Mainship Pilot Sedan 34
Join Date: Mar 2018
Posts: 68
Jamie,

When sizing the davits remember that the weight is not evenly distributed if the motor is left on the dinghy. You can figure half the weight of the dinghy plus the weight of the motor is roughly supported by one davit and only half the dinghy weight by the other. I believe the St. Croix rating is for the pair, so 175 lbs each. My davits are the 1" but my dinghy weight is only about 100 lbs and 55 for the 4hp motor.

My davits originally had 6:1 lifting tackle which was more than needed. The lines get very stiff over time and it was a pain to raise and lower. I replaced the lines and reduced the purchase to 3:1 on the bow davit and 4:1 on the stern. It is now much easier, and quicker to raise and lower. St. Croix can probably advise you on the proper amount of purchase for your dinghy weight.

Good luck with your project.,
Brett
Tonic1 is offline   Reply With Quote
Old 11-11-2019, 12:16 PM   #20
Member
 
City: green cove springs
Country: United States
Join Date: Nov 2016
Posts: 15
hi jamie,

yes, our st croixs are 1". we actually have the same davit on 2 different boats and like you our dinghy weighs about 250# incl motor, and full fuel.

when we got our first set 13 yrs ago i worked directly with bill who owned st croix at the time. i described our dinghy requirements (i.e. travel with motor on, gulfstream, etc) and he said the 1" were more than up to the task. he made it perfectly clear that the dinghy had to be completely immobilized to remove any chance of large schock loads.

when we bought our pilot 10 years ago i called bill again. this time the issue was where to mount the upper support. st croix standard was to have the mount on the outside vertical of the stern. i told bill no way. i wanted the top support on the flat top surface. so they welded up the bracket for the transom top. so my experience is 13 years on one set and 10 on the other.

good luck.
__________________

__________________
John
GEM 2003 P34
Duetto is online now   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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





All times are GMT -5. The time now is 08:54 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×