Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 24-01-2021, 15:44   #1
Registered User

Join Date: Oct 2018
Location: Paris, Ontario
Boat: 33 Hunter
Posts: 4
39' Hunter underpowered with a 29HP Yanmar?

Hello everybody,

We've sold our 2005 Hunter 33 last year and it had an upgraded 29 HP Yanmar. Looking for our next boat and found a handsome 2011 Hunter 39. The only problem is that this boat also has the same 29HP Yanmar engine. Looks like an upgraded 40HP was available as an option for this boat, and most other boats of this type indeed do seem to have the 40, but this one has a 29.

Is this boat underpowered? I'd expect production boats to put in the minimum engine required, but this seems odd, and I don't remember feeling like our last boat had too much engine. Expecting to use it for ICW and Caribbean cruising, plus Great Lakes. Any advice from somebody who has a similar boat, or relevant experience?
bellablue is offline   Reply With Quote
Old 24-01-2021, 17:24   #2
Registered User
 
Orion Jim's Avatar

Join Date: Dec 2008
Location: Noank, Ct. USA
Boat: Cape Dory 31
Posts: 2,247
Images: 8
Re: 39' Hunter underpowered with a 29HP Yanmar?

High freeboard so lots of inherent windage, 18,000 pounds displacement, 13 foot beam carried well aft. The 40 horse powerplant would be my choice.
Orion Jim is offline   Reply With Quote
Old 24-01-2021, 18:29   #3
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 2,625
Re: 39' Hunter underpowered with a 29HP Yanmar?

Intuitively, it certainly seems that is under-powered, however, I suggest you go to the Hunter Owner’s website (sailboatowners.com) and either read the reviews owners posted or ask them directly.
S/V Illusion is offline   Reply With Quote
Old 24-01-2021, 20:27   #4
Registered User

Join Date: Sep 2012
Location: Plano, TX Houston, TX
Boat: Hunter 380
Posts: 70
Re: 39' Hunter underpowered with a 29HP Yanmar?

It is underpowered
Dallasron is offline   Reply With Quote
Old 24-01-2021, 20:48   #5
Registered User
 
Island Time O25's Avatar

Join Date: Sep 2014
Posts: 2,675
Re: 39' Hunter underpowered with a 29HP Yanmar?

It's adequate for 99.9% of the situations. If you enter the data from Sailboatdata on this model VicProp calculator gives exactly 29HP. 40HP option seems to be there for upsell purposes.

https://vicprop.com/planing_size_new.php
Island Time O25 is online now   Reply With Quote
Old 25-01-2021, 05:50   #6
Registered User

Join Date: Jul 2011
Location: Key West to San Francisco
Boat: 65' cat, sold
Posts: 64
Re: 39' Hunter underpowered with a 29HP Yanmar?

It's underpowered.
fishead is offline   Reply With Quote
Old 25-01-2021, 05:55   #7
S/V rubber ducky
 
sailorboy1's Avatar

Join Date: Jul 2007
Location: Bahamas cruising currently
Boat: Hunter 410
Posts: 17,637
Re: 39' Hunter underpowered with a 29HP Yanmar?

Quote:
Originally Posted by S/V Illusion View Post
Intuitively, it certainly seems that is under-powered, however, I suggest you go to the Hunter Owner’s website (sailboatowners.com) and either read the reviews owners posted or ask them directly.
do this

It of course isn't "underpowered" as much as it isn't "powered as much as with a larger" engine.
__________________
jobless, houseless, clueless, living on a boat and cruising around somewhere
sailorboy1 is offline   Reply With Quote
Old 25-01-2021, 06:15   #8
Freelance Delivery Skipper..
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: PORTUGAL
Posts: 25,663
Images: 2
pirate Re: 39' Hunter underpowered with a 29HP Yanmar?

It is a sailboat.. engines are for entering and leaving marinas..
Aren't they.???
__________________


Born To Be Wild.. Double Click on the picture.
boatman61 is offline   Reply With Quote
Old 25-01-2021, 10:58   #9
Senior Cruiser
 
skipmac's Avatar

Cruisers Forum Supporter

Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 15,263
Re: 39' Hunter underpowered with a 29HP Yanmar?

I agree with the 99.9% of the time answer. Normal cruising, enter/leaving a dock, etc 29 HP is just fine.

UNTIL, you have one of those situations like...... You're maneuvering around a fuel dock, discover there's a 2 kt current pushing into another boat and a cross wind and you need to turn around or back out asap against the wind and/or current. Then you might be wishing for that 40 HP option.

But how often does this happen? Maybe never if you always plan carefully or are a bit lucky.
__________________
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.
skipmac is offline   Reply With Quote
Old 25-01-2021, 11:20   #10
Registered User

Join Date: Feb 2016
Location: Southport, NC
Boat: Pearson 367 cutter, 36'
Posts: 514
Re: 39' Hunter underpowered with a 29HP Yanmar?

My boat is 36.5 feet, about 18,000 lb displacement and has a 40HP engine. Could I get along with a 29HP? Yes, 99% of the time as others have said. I try to motor as little as possible.
AJ_n_Audrey is offline   Reply With Quote
Old 25-01-2021, 11:42   #11
Registered User

Join Date: Jul 2007
Location: Florida
Boat: Swallow Craft, Swift 33
Posts: 107
Re: 39' Hunter underpowered with a 29HP Yanmar?

IMHO 2HP per 1000 lbs is a absolute minimum. I have a 33' 15000 lbs sailboat and a new Volvo Penta D2-50 (HP) engine. This engine is only 18 lbs heavier than the one it replaced. I could not be happier with this engines performance. Same 1 gal per hour only now we cruise under power at 6.9Kts with ease. So to me it's 3+ HP per thousand.
cottonsail is offline   Reply With Quote
Old 25-01-2021, 12:16   #12
Registered User

Join Date: Nov 2015
Location: Currently in Michigan
Posts: 229
Re: 39' Hunter underpowered with a 29HP Yanmar?

Unless I am mistaken I seem to have read of several crankshaft failures on the 29hp engine too. Repowering is very expensive so try to pick a boat with a more powerful and more current engine.


Sailboats are usually using their engine when there is already no alternative and dealing with current, waves on the nose etc suggests that more power would definitely be desirable under those conditions. Especially if the 29hp might decide to have a crankshaft failure when pushed hard...
Westcliffe01 is offline   Reply With Quote
Old 25-01-2021, 13:37   #13
Registered User

Join Date: Mar 2015
Location: Courtenay BC
Boat: Hunter 38
Posts: 287
Re: 39' Hunter underpowered with a 29HP Yanmar?

We have a Hunter 38 with the 40hp engine. However, we're in BC at the northern end of the Salish Sea - constant current in most places, especially between islands, and several tidal gates to transit. I wouldn't want the smaller engine but I'm stuck motoring quite a bit along narrow channels with current.
desodave is offline   Reply With Quote
Old 25-01-2021, 14:22   #14
Registered User

Join Date: Feb 2019
Location: Point Richmond, CA
Boat: Hunter 46
Posts: 303
Re: 39' Hunter underpowered with a 29HP Yanmar?

Quote:
Originally Posted by bellablue View Post
.............found a handsome 2011 Hunter 39. The only problem is that this boat also has the same 29HP Yanmar engine.............Is this boat underpowered?............?
The Hunter 39 weighs 18,077 lbs and the Hunter weiighs 10.660. If you thought the 29 hp engine was satisfactory for your 33, you will be dissapointed in the 29 hp engine in a 39. The 29 hp engine will be underpowered for that size boat. My Hunter 386 had a 40 hp engine and that allowed hull speed with a 3 blade fixed propeller. I would not have wanted less hp.
sail sfbay is offline   Reply With Quote
Old 25-01-2021, 14:29   #15
Registered User

Join Date: Jun 2016
Location: Jensen Beach, Fl
Boat: O'Day 34
Posts: 298
Re: 39' Hunter underpowered with a 29HP Yanmar?

Our 12,000#, 34’ has a 25hp diesel and there have been numerous times I have wished for more horsepower. We keep a clean bottom and cruise at 6.5-7 knots but coming in the Fort Pierce inlet last week our ground speed was 1.5 knots even though the water speed was 7.1 knots.
We mainly use the engine for coming and going from our slip but there are many times an engine with adequate power is needed.
Bill in JB
Quadrille in JB is offline   Reply With Quote
Reply

Tags
hunter, yanmar

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Comments on Hunter 42 passage, Hunter 45, hunter 45 cc, hunter 49 and 50 chucklet321 Monohull Sailboats 6 16-08-2019 11:26
2002 29hp Yanmar 3500-4000 hrs estimated Askeeta General Sailing Forum 16 02-01-2019 12:32
For Sale: YANMAR 29HP ENGINE- 3YM30 Miss Calypte Classifieds Archive 0 02-11-2014 15:38
Autoprop for an Underpowered Motorsailer ? PugtSounDav Propellers & Drive Systems 10 11-11-2011 12:17
Concern About Underpowered Windlass ? lawdawg Deck hardware: Rigging, Sails & Hoisting 16 25-10-2010 10:32

Advertise Here


All times are GMT -7. The time now is 00:07.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.