Handling a single screw inboard

diesel1960

Petty Officer 1st Class
Joined
Jul 3, 2012
Messages
205
Just purchased Chris Craft Catalina 251 with single GM350 inboard.
It is my first inboard single screw boat.
Do not have any experience with maneuvering this vessel to the slip.Having a trouble with reverse parking.
Anybody with experience on this kind of craft,if you have any tips or advice,please can you share with me.
Thank you.
 

Bamaman1

Lieutenant Commander
Joined
May 15, 2011
Messages
1,895
Re: Handling a single screw inboard

You might want to Google this subject.

When in reverse, inboards will go backwards and side ways at the same time. You'll find them easier to turn in one direction than the other, and it takes a fast idle for the rudder to work well.

It's just practice, practice, practice.
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,592
Re: Handling a single screw inboard

Just purchased Chris Craft Catalina 251 with single GM350 inboard.
It is my first inboard single screw boat.
Do not have any experience with maneuvering this vessel to the slip.Having a trouble with reverse parking.
Anybody with experience on this kind of craft,if you have any tips or advice,please can you share with me.
Thank you.

To add, when in reverse your prop is turning CCW pulling the boat back and to the left. So when Backing into a silp note your bow needs to be more left then center, so when you start to back the stern moves to port as it starts backing. The turn will be slower than the backing. Do not keep it in gear for any length of time, short bust so to speak. You want to move slowly and the more speed you increase the less time to react.

I line myself up at an angle to the slip and start the backing with drive facing a bit to starboard, once moving backwards at an angle but not yet allowing the stern to move much to starboard, it comes out of gear. Inertia continues to move to the rear, as I get close to the slip entrance I put the shifter in forward and the drive still to starboard. This forward thrust moves the bow to starboard and the stern to port with a short burst(s). The boat should be about straight now, turn drive to straight back but be ready for slight corrections.

As Bamaman1 mentioned, lots of practice and also do it slowly.

To dock alongside port or starboard and you just missed getting close (port works best due to prop rotation) to the side of the dock. Let's say to port, turn helm hard to starboard (your not moving much at this point, your just a bit too far away to grab hold), shift to reverse until boat starts moving backwards, then shift to forward and wait for boat to start moving forward, then repeat until you walk her in sideways.
 

diesel1960

Petty Officer 1st Class
Joined
Jul 3, 2012
Messages
205
Re: Handling a single screw inboard

Thank you for tips,yes I will need a lot of practice .Maneuvering single screw inboard is most challenging of all other configuration boats.
 

agallant80

Commander
Joined
Oct 25, 2010
Messages
2,328
Re: Handling a single screw inboard

My advice would be to go slow. I see people gassing it to get the boat to turn faster which then in turn makes them over correct and gass it again in the other direction. Slow and steady and you will be fine.
 

Outsider

Lieutenant Junior Grade
Joined
Apr 24, 2007
Messages
1,022
Re: Handling a single screw inboard

Old mariner's proverb: Do not move any faster than you're willing to hit something ... :faint2:
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,592
Re: Handling a single screw inboard

Old mariner's proverb: Do not move any faster than you're willing to hit something ... :faint2:

Not sure how old the "old" proverb is but .... I like it :laugh: :cheer2: :grouphug:
 
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