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02-05-2017, 03:25 PM
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#1
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Guru
City: Marathon, Florida
Vessel Name: Walkabout
Vessel Model: 1989 Sea Ray 380 Aft Cabin
Join Date: Jan 2012
Posts: 521
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New Boat
Well, new to us. We just purchased a 1989 Sea Ray 380 Aft Cabin. A far different vessel than the 36' Marine Trader that we had before. This has twin 454 gas engines, good thing our travels are pretty much just going to be the Keys for the foreseeable future. 1 mpg at 7 knots, .5 mpg at 12 knots. It's a good thing I am used to going slow.
One thing I will enjoy though is the 2' 7" draft. For the Keys that is a biggie. It has prop pockets. I don't know what that does for efficiency but I love what it does for the draft.
It is still in Fort Myers area, hope to bring her down in about a week.
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02-05-2017, 03:57 PM
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#2
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,566
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Greetings,
Mr. R2G. Congrat's. I hear ya on the 2'7"...
__________________
RTF
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02-05-2017, 06:00 PM
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#3
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Senior Member
City: Interior Texas
Vessel Name: Ray Sea Lady
Vessel Model: Sea Ray AC
Join Date: Dec 2013
Posts: 161
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New Boat
Quote:
Originally Posted by READY2GO
Well, new to us. We just purchased a 1989 Sea Ray 380 Aft Cabin. A far different vessel than the 36' Marine Trader that we had before. This has twin 454 gas engines, good thing our travels are pretty much just going to be the Keys for the foreseeable future. 1 mpg at 7 knots, .5 mpg at 12 knots. It's a good thing I am used to going slow.
One thing I will enjoy though is the 2' 7" draft. For the Keys that is a biggie. It has prop pockets. I don't know what that does for efficiency but I love what it does for the draft.
It is still in Fort Myers area, hope to bring her down in about a week.
Attachment 61305
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Congrats on your purchase.
I recently finished a resto on a 1987 410AC. Bow to stern, top to bottom, I've been over every inch and from what I've seen, other than the fuel situation, you should have many happy days aboard her.
In my own case, If it were diesel I'd have an awesome boat. Instead, with gasoline, it's just great. [emoji6]
I am envious; I am having to boat on inland waters. Although enjoyable, I still prefer saltwater boating. Best of luck to you sir.
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02-05-2017, 07:33 PM
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#4
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Guru
City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,331
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Nice well balanced looking boat. What`s the advantage of props and rudders being in tunnels, apart from gaining a degree of protection?
__________________
BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
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02-05-2017, 07:41 PM
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#5
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TF Site Team
City: Ex-Brisbane, (Australia), now Bribie Island, Qld
Vessel Name: Now boatless - sold 6/2018
Vessel Model: Had a Clipper (CHB) 34
Join Date: Jun 2008
Posts: 10,101
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Quote:
Originally Posted by BruceK
Nice well balanced looking boat. What`s the advantage of props and rudders being in tunnels, apart from gaining a degree of protection?
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It is claimed by some boat builders the tunnels increase the prop efficiency to an extent, so not only for draft and protection reasons, I gather. Maritimo do this with most of their big boats. Riviera also I think.
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Pete
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02-05-2017, 08:17 PM
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#6
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Enigma
City: Slicker?
Join Date: Oct 2007
Posts: 16,566
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Greetings,
Our 23' Penn Yan is a tunnel drive...
__________________
RTF
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02-05-2017, 09:35 PM
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#7
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Guru
City: Sydney
Vessel Name: Sojourn
Vessel Model: Integrity 386
Join Date: Oct 2011
Posts: 13,331
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Quote:
Originally Posted by Peter B
It is claimed by some boat builders the tunnels increase the prop efficiency to an extent, so not only for draft and protection reasons, I gather. Maritimo do this with most of their big boats. Riviera also I think.
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Thanks Peter.Some later Maritimo and Rivs(? only the Volvo powered ones) have IPS, they would benefit from protection. Anyone know how a tunnel improves prop efficiency?
__________________
BruceK
2005 Integrity 386 "Sojourn"
Sydney Australia
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02-05-2017, 10:07 PM
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#8
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,834
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Congratulations on the new boat!
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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02-05-2017, 10:10 PM
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#9
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,196
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Man, that shallow draft is sweet for the keys! Congrats on your new boat!
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Larry
"When life gets hard, eat marshmallows”.
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02-05-2017, 11:05 PM
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#10
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Guru
City: St Augustine,Fl
Join Date: Sep 2009
Posts: 3,798
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It is supposed to focus prop wash aft for an efficiency of some percentage and reduce draft. Nothings free, you pay the price on reverse thrust (sternway). When I was a kid, (3 years ago..) Penn yans were abundant. That roostertale that they all leave is a clue to their demise , I would think.
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02-06-2017, 06:19 AM
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#11
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Guru
City: Marathon, Florida
Vessel Name: Walkabout
Vessel Model: 1989 Sea Ray 380 Aft Cabin
Join Date: Jan 2012
Posts: 521
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Thanks everyone.
The big thing to me with the prop pockets is the minimal draft. The Keys are very shallow. Going from a 4' draft to 2' 7" will be very nice. Now if I can figure out how to get from the helm to the bow to pick up a mooring solo I will have it made. Wish I could afford remote controls.
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02-06-2017, 06:23 AM
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#12
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,149
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I drove dozens of those Sea Rays when I worked for a Marine Max.
The tunnels didn't seem to affect efficiency all that much .....but I never thought the 454s were geared or propped right....no calculations, just a captains feel.
The one thing the tunnels did with the gas boats, is made them darn near uncontrollable single engine in tight quarters. The props and rudders were just too small and the pockets took some effectiveness away from the rudders. Mostly on the express models but the bridge models suffered a bit too.
If you haven't practiced any single engine work...I highly recommend it and I used to really push it when training new owners.
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02-06-2017, 06:32 AM
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#13
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Guru
City: Annapolis
Vessel Name: Ranger
Vessel Model: 58' Sedan Bridge
Join Date: Aug 2013
Posts: 7,088
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Quote:
Originally Posted by READY2GO
Now if I can figure out how to get from the helm to the bow to pick up a mooring solo I will have it made.
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Try pick-up from your aft deck where it meets the side-decks?
FWIW, we usually pick up from the cockpit and walk the pennant forward...
-Chris
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Chesapeake Bay, USA
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02-06-2017, 07:01 AM
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#14
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Guru
City: Owings, Md
Vessel Name: Graceland
Vessel Model: Mainship 34 MK1
Join Date: Jan 2016
Posts: 1,381
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At least part off the efficiency claims are due to the shaft angle of a pocket shaft being lower. There was a builder/naval architecture firm in Solomon's, MD called Oceantech that used pocket shafts in conjunction with air injection to produce a surface piercing prop effect without the typical installation (for a surface piercing drive) of a drive hanging off the back of the boat. I believe it was supposed to make the performance less dependent on the boats trim and sea state. I can't remember all of the details but believe the boats were more of a test bed of their technology to sell to the industry rather than profiting from the boat's themselves.
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02-06-2017, 09:16 AM
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#15
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Guru
City: SF Bay Area
Vessel Model: Tollycraft 34' Tri Cabin
Join Date: Feb 2011
Posts: 12,569
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Quote:
Originally Posted by RT Firefly
Greetings,
Our 23' Penn Yan is a tunnel drive...
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Few years ago I almost purchased similar year/model Penn Yan. In 60's Penn Yan was a respected boat selling in New England. At Madison Square Garden annual NY boat shows Penn Yan boats were well represented. I boarded plenty of them at the shows.
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02-07-2017, 04:25 PM
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#16
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Guru
City: Houma, Louisiana
Vessel Name: M/V LUNASEA
Vessel Model: 45ft Bluewater Coastal
Join Date: Aug 2014
Posts: 529
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Mike are saying remote control for your windlass???
Pump will be shipped in AM
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02-07-2017, 07:09 PM
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#17
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Guru
City: Marathon, Florida
Vessel Name: Walkabout
Vessel Model: 1989 Sea Ray 380 Aft Cabin
Join Date: Jan 2012
Posts: 521
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Quote:
Originally Posted by kartracer
Mike are saying remote control for your windlass???
Pump will be shipped in AM
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Thanks kartracer.
No I was talking about the remotes that control transmissions so I could walk forward to pick up the mooring and still have control of the boat. But that is way out of my price range right now.
Current problem of the day is I had a good look at the Quicksilver generator today and it is not a pretty picture. At survey it ran great and powered the entire boat, all 4 ACs but started to get hot so we shut it down. It was obvious that the heat exchanger ends were rusted and the exhaust elbow would need to be changed. But after doing some research today I found out the exhaust elbow is $450 and the two end caps when one can find them are $1200. It seems Generac bought Quicksilver and is not too interested in supporting them. So with no real support I don't want to put that much money into it. Trying to figure out what to do now.
I have used a Honda portable for years so I may go that route again. The cheapest marine gas generator I can find starts at about $8,500. Can't do that right now.
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02-07-2017, 07:29 PM
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#18
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Guru
City: Marathon, Florida
Vessel Name: Walkabout
Vessel Model: 1989 Sea Ray 380 Aft Cabin
Join Date: Jan 2012
Posts: 521
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Quote:
Originally Posted by ranger42c
Try pick-up from your aft deck where it meets the side-decks?
FWIW, we usually pick up from the cockpit and walk the pennant forward...
-Chris
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That is what I will have to try. We have a Wellcraft 2900 Express Cruiser and I do that with it but it is difficult as the side decks are narrow. It may be easier with this one.
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