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Old 10-23-2020, 02:24 PM   #1
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Docking question.

We're downsizing -- moving ashore after seven years and 10,000 miles on Fintry. We're looking at double cabin trawlers.


Question. Assuming that the GB36 backs to port -- most single screw boats do -- I don't understand their putting the only saloon door on the starboard side. Since it will be significantly easier to dock port side to, you'll have to go around the deckhouse to help wiith lines and single handed docking would be very difficult. How do GB36 owners feel about this? Related, of course, is the fact that the steps to the upper deck are on the port side, so to go from the saloon up, you have to go a third of the way around the boat.

Or, was GB smart? There are some reverse gears that allow running continuously in either direction. It would certainly be possible to use a gear that allowed that, mount a left hand propellor, and have the boat back to starboard. Is that the case?
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Old 10-23-2020, 02:54 PM   #2
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I would check with GB owners...my Albin backs to Starboard.
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Old 10-23-2020, 03:54 PM   #3
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I know what you mean. My Puget Trawler backs to starboard and my entry door is on the port side.
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Old 10-23-2020, 04:04 PM   #4
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When I had a GB 36 it backed to starboard. GB bought engines with an eye to twin installations with counter rotating props. When they built a single you got the luck of the draw.
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Old 10-23-2020, 04:12 PM   #5
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Thrusters make this a non issue. My DE pulls to port. I dock to starboard after a u turn. With out the use of thrusters it is no less the 20 clutch shifts. With thrusters it is 1 or 2
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Old 10-23-2020, 04:15 PM   #6
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Most of the singles that I have driven backed to starboard. Actually all of them, but yours may be different.
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Old 10-23-2020, 04:22 PM   #7
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Most Modern engines turn the same way . Gear ratios are what change the direction of the shaft.
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Old 10-23-2020, 04:27 PM   #8
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My Monk backs to starboard (left hand prop). The 32 and 36 GBs we chartered were also left hand props.
A port side door was added to GB 36s around 1987 when the beam was widened a few inches.
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Old 10-23-2020, 04:38 PM   #9
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There are a number of twin engine GB 36's on the market. Lehman on earlier boats, Cummins on later ones. Docking becomes a non-issue with twins.
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Old 10-23-2020, 07:24 PM   #10
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My boat backs to port and I starboard tie. It's really a non issue after you master "Back and Fill". You can also use a bow thruster, but "back and fill" has been taught for around a century.

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Old 10-23-2020, 07:32 PM   #11
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Every Volvo I've driven backed to starboard, everything else I've driven went to port
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Old 10-23-2020, 07:44 PM   #12
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Anyone know of a single Ford Lehman (left hand engine) with a Borg Warner tranny that didn't back to starboard?
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Old 10-23-2020, 08:03 PM   #13
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Quote:
Originally Posted by psneeld View Post
Anyone know of a single Ford Lehman (left hand engine) with a Borg Warner tranny that didn't back to starboard?
You can get a CR2 transmission with either LH or RH rotation. Match the prop and you're in business.
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Old 10-23-2020, 08:27 PM   #14
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It’s having a planetary reduction drive or what I call a gear on gear reduction drive.

Planetary revolves the shaft and prop anti-clockwise and pulls the stern to stbd.
Gear on gear revolves the shaft clockwise and the stern pull to port.

Older boats w the BW gears (planetary re-drive) pull to stbd. Of course when re-powered w later model engines the prop turned the other way.

That’s about it.
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Old 10-27-2020, 08:33 AM   #15
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Our 1988 double cabin 36' GB Trawler has an entrance door on both sides. One at he lower helm stbd and one just aft of the refrigerator on the port. Our prop is LH and backs to stbd and we have a bow thruster just for good measure. Handles and handling is very easy and comfortable.

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Old 10-27-2020, 08:49 AM   #16
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Thanks -- Unfortunately there appear to be very few single engine version 2 (wider, longer) GB36 on the East Coast -- Yachtworld lists three, one in the UK and two on the West Coast, but none here. There are six twins on the East Coast, but that's not what we want.


However, the consensus seems to be that the Lehmans are set up to back to starboard, so maybe the single door version is OK.


Incidently, in response to several comments above, I can park Fintry (79') in a 90 foot space to port with our 60hp bow thruster and five foot single screw, but docking her to starboard is a much slower process. Best way is to angle in, get the spring line on, and idle forward with the rudder hard to port, but that only works on strong docks -- the usual marina float won't stand the pull. On weak docks, we need someone on the float to take a stern line, which goes to a 60:1 docking winch.
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Old 10-27-2020, 09:52 AM   #17
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Quote:
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You can get a CR2 transmission with either LH or RH rotation. Match the prop and you're in business.
Most boats with twin engines, no matter the brand, have both engines turning the same way and use the transmissions to make one turn the opposite way.
The setup then, has each engine, when in reverse, pulling towards the centrerline. P engine backs to Sb, Sb engine backs to P.

Mine are BW on Volvos.
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Old 10-27-2020, 09:58 AM   #18
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Quote:
Originally Posted by koliver View Post
Most boats with twin engines, no matter the brand, have both engines turning the same way and use the transmissions to make one turn the opposite way.
The setup then, has each engine, when in reverse, pulling towards the centrerline. P engine backs to Sb, Sb engine backs to P.

Mine are BW on Volvos.
Most modern boats and most diesels are as you describe. However, most older transmissions couldn't just be used with either gear as "forward", so they were either built as counter rotating transmissions, or for older gas boats, the engines counter rotate. My stbd engine rotates backwards, for example. So I'd hesitate to say "most" boats, as there are many boats where the engines counter rotate.

In addition, most twins counter rotate the props outwards in forward as you describe, but there are some that are opposite.
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Old 10-30-2020, 12:43 PM   #19
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GB 36 cruising

Quote:
Originally Posted by Circumnavigator View Post
We're downsizing -- moving ashore after seven years and 10,000 miles on Fintry. We're looking at double cabin trawlers.


Question. Assuming that the GB36 backs to port -- most single screw boats do -- I don't understand their putting the only saloon door on the starboard side. Since it will be significantly easier to dock port side to, you'll have to go around the deckhouse to help wiith lines and single handed docking would be very difficult. How do GB36 owners feel about this? Related, of course, is the fact that the steps to the upper deck are on the port side, so to go from the saloon up, you have to go a third of the way around the boat.

Or, was GB smart? There are some reverse gears that allow running continuously in either direction. It would certainly be possible to use a gear that allowed that, mount a left hand propellor, and have the boat back to starboard. Is that the case?
Yes, my GB 36 backs to port, and it took some doing to learn to back it in. My version only has the starboard door. Some were built with two doors, some had just one. If I'm not mistaken, I think all the 42's were built with two. The GB 32 only has one door and it's all the way aft. I would kill for the two door version but when I was buying there wasn't one available that had the "must haves" that were on my list. Also, some 36s were built with an island queen bed in the aft stateroom and some have a double to starboard and a twin to port. The island queen would be really nice to have if you can find one.

Docking this boat single handed is a chore, no matter how many doors you have due to it's large wind print, an under powered engine (in my opinion) and 1 screw with no thrusters. That's just the nature of the beast. A lot has to do with the type of slip you have, how long the finger piers are, how protected the marina is etc. Also, if it's really windy, we just don't go out or come in. Two engines plus thrusters would help but I'm a single engine believer so I just deal with the issues that brings. I don't find the starboard door and port steps up to the flybridge to be an issue.
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Old 10-30-2020, 12:45 PM   #20
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Quote:
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Anyone know of a single Ford Lehman (left hand engine) with a Borg Warner tranny that didn't back to starboard?
I have a single FL 120 and a Borg Warner tranny and mine backs to port.
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