myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website

Welcome to myHanse.com the forum for Hanse Yachts owners throughout the world.

Forum Home Forum Home > Hints and Tips > 355
  New Posts New Posts RSS Feed - Speed when motoring
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Speed when motoring

 Post Reply Post Reply
Author
Message
JonasN View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 09 May 2014
Location: Stockholm
Status: Offline
Points: 4
Post Options Post Options   Thanks (0) Thanks(0)   Quote JonasN Quote  Post ReplyReply Direct Link To This Post Topic: Speed when motoring
    Posted: 14 May 2014 at 19:38
Hi!
Iím a new Hanse 355 owner. I bought a used Hanse this autumn in Germany and sailed it home to Stockholm, Sweden last week. Sailed might be an overstatement, we went by motor most of the trip. During the motoring we became a bit concerned because we had problems to reach 5,5 knots and to get close to 6 we had to run to motor on almost full speed even on flat water and no wind. All this was very disappointing, the expectation was a lot better speed at a lover rpm.

My question to the forum is what speed you can expect when motoring with a Hanse 355? We have the Volvo Penta D1-30 and a 2 blade folding propeller. Originally the boat was equipped with a fixed 2 blade propeller but we asked the company we bought the boat from to replace that. Unfortunately I never asked for the specifications of the propeller so I canít give you any information on that. My suspicion is that they have put a propeller with wrong specifications on the boat.
Back to Top
Perttu View Drop Down
Captain
Captain
Avatar

Joined: 13 October 2006
Location: Finland
Status: Offline
Points: 238
Post Options Post Options   Thanks (0) Thanks(0)   Quote Perttu Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 2014 at 20:03
Congrats for the new boat! Good value in my experience.

On calm conditions my 355 runs with 2200 revs around 6,2 knts. Full throttle goes 7,3 knts. With stiff headwinds I can still manage 5-6 knts around 2800 revs if not above 25 knts and high waves. This is with D1-20 and 16*10 folding 2-blade flex-o-fold.

I had no choice for the engine since my boat is a demo. But even D1-20 is enough in the northern Baltic.

I think the prop you have is simply way too small - you should have better performance than my boat.

- Perttu


Edited by Perttu - 14 May 2014 at 20:05
Check my sailing videos - http://www.youtube.com/user/l11483?feature=results_main
Back to Top
High Time View Drop Down
Rear Admiral
Rear Admiral


Joined: 04 September 2012
Location: Portsmouth UK
Status: Offline
Points: 636
Post Options Post Options   Thanks (0) Thanks(0)   Quote High Time Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 2014 at 20:24
Originally posted by JonasN JonasN wrote:

- - - - - - - 
During the motoring we became a bit concerned because we had problems to reach 5,5 knots and to get close to 6 we had to run to motor on almost full speed even on flat water and no wind. All this was very disappointing, the expectation was a lot better speed at a lover rpm.
- - - - - -

How were you measuring the speed?
If using the water speed, has the log been calibrated?
If GPS SOG, was the tide an issue at any time?
Is the bottom clean?

Your first guess about the prop could well be correct but the above questions are important to rule out the obvious!
Roger

High Time (415 #038)
Back to Top
Connan View Drop Down
Lieutenant
Lieutenant
Avatar

Joined: 12 February 2013
Location: Auckland
Status: Offline
Points: 35
Post Options Post Options   Thanks (0) Thanks(0)   Quote Connan Quote  Post ReplyReply Direct Link To This Post Posted: 14 May 2014 at 23:09
Hi Jonas, our 355 has the same engine, but not sure about the prop as we also bought the yacht second-hand, but it's a folding prop.

I don't usually like to exceed 2,200- 2,500 revs except in short bursts. We typically get 6 - 7 knots in that range and generally beat most yachts, even much bigger ones. The hull cuts through the water really nicely.
It does sound like your prop may be too small. A clean bottom can also make a knot of difference.

cheers

Connan

Little Honey, 2011 Hanse 355, 3 cabin model, D1-30
Back to Top
Ville View Drop Down
Sub Lieutenant
Sub Lieutenant
Avatar

Joined: 03 April 2011
Status: Offline
Points: 4
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ville Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2014 at 08:28
Hi,
 
it indeed sounds like that the propeller blade pitch is not correct. My 355 with D1-20 also runs max 7,2 knots (SOG) in calm conditions and ca. 6,8 is a good cruising speed with 2800 rpm.
 
I had originally a three-blade Flex-o-Fold 16 x 11 (diameter x pitch) and it was replaced by the yard under guarantee with 16 x 10 blades because I had difficulties getting over 2500 revs even with full gas. The speed wasn't a problem but a "too big gear" is not optimum for the engine in the long run. Been happy with the current solution ever since.
 
Regards,
 
Ville
 
 
Ville

s/y Aorta

Finland

355#065
Back to Top
Brufan View Drop Down
Commadore
Commadore
Avatar

Joined: 16 December 2010
Location: Belgium
Status: Offline
Points: 439
Post Options Post Options   Thanks (0) Thanks(0)   Quote Brufan Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2014 at 10:27
My H355 has also a D1-30 engine now fitted with a 16 X 12 L Flex-O-Fold Propeller.
I also reach easyly 6 knots at approx 2100 - 2200 rpm.
She reaches 7.2 knots at 2500 rpm approx.
With original Volvo fixed prop she reached these speeds 200 rpm higher but with fuel consumption 20 % up. 
So you have an issue.  
I think diameter & pitch of your propeller is the main cause unless your hull is clean.
Bruno

hanse 355 - 57

S/Y Spicy Ginger

White hull, 2 cabins, Volvo D1-30, Selden rig, removable mainsheet track system (modifications done now), Simrad-Jefa autopilot.
Back to Top
JonasN View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 09 May 2014
Location: Stockholm
Status: Offline
Points: 4
Post Options Post Options   Thanks (0) Thanks(0)   Quote JonasN Quote  Post ReplyReply Direct Link To This Post Posted: 16 May 2014 at 18:35
Thank you all for your replies!
I'm pretty sure that the propeller is the problem. We ran in flat water, no tide, there is really none in the Baltic Sea, and at 2800 rpm we made 5,8 knots SOG at most. Sometimes we where down to 5 knots with the wind against us and that was not a strong wind. The log was showing the same speed most of the time, sometimes there was a difference of maybe 0,2-0,3 knots. The bottom is clean. The boats has been stored on land during winter and there was new anti fouling applied during the autumn. I have contacted the company we bought the boat from to get the measurements for the propeller, we'll see if I get a reply...

Once again, many thanks!
Jonas
Back to Top
JonasN View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 09 May 2014
Location: Stockholm
Status: Offline
Points: 4
Post Options Post Options   Thanks (0) Thanks(0)   Quote JonasN Quote  Post ReplyReply Direct Link To This Post Posted: 02 June 2014 at 21:18
We have now replaced the old propeller with a Flexofold 16x12 and it is like a new boat. We made a quick test run and got up to 7,3 knots top speed and over 6 knots just above 2000 rpm. The old propeller turned out to be 15x9. Can't really understand what they thought when they put that on...
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.04
Copyright ©2001-2015 Web Wiz Ltd.

This page was generated in 0.047 seconds.

Links : www.hanseyachts.co.uk www.hanseyachts.com www.fjordboats.co.uk www.dehler.co.uk www.varianta.co.uk