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Rob Pierce  
#1 Posted : 06 January 2020 22:52:50(UTC)
Rank: Newbie

Posts: 4
Location: Wirral

I am a new member and new owner of Parker 21 No. 98 - Now named Wave.

The boat came with a Honda 2.3 outboard but I wonder if it is powerful enough for me. I will be using the boat for day sailing from South Caernarvonshire Yacht Club at Abersoch in Cardigan bay. I particularly concerned about the engine being powerful enough to get me back onto my mooring when it has freshened up and too difficult to sail onto moorings single handed. Fortunately tides are quite weak in that area, 1 knot max.

I recently looked at a Suzuki DF5 which I expected to be suitable but found that it would be an extremely tight fit into the Outboard Well, if not rubbing against the transom. I am keen on having a water cooled 4-stroke engine rather than 2-stroke as quieter, easier to start and less fumes. So I am seeking the advice of other Parker 21 owners with the following questions:

1) Is the existing Honda 2.3 powerful enough to push against a Force 5 wind ?

2) What size engines do most boats have ?

3) Which 4-stroke engines fit into the outboard well ?

Looking forward to some good advice,

Regards Rob Pierce

Lindsey Moscrop  
#2 Posted : 07 January 2020 19:00:25(UTC)
Rank: Newbie

Posts: 6
Location: Norfolk

Hello Rob

Congratulations for purchasing your P21 Hope the following info is of use and I am not just preaching to the converted.

There is plenty of space in the ‘well’ of the P21 for a choice of outboards. The original recommendation was I think for 4 to 6 hp. Mr Parker I believe preferred his favourite Honda 5. Overall clearance/space may depend to some extent on wether you have a fixed mount of ply for the clamps to tighten on to, or the later lifting/sliding mount which may give an inch or so more space.

The drawback it seems with two strokes is the tendency for the engines to stifle themselves and make the cabin crew uncomfortable, when they are mounted in a well.

Where possible I would specify a ‘through the prop’ rather than over the prop exhaust outlet to reduce emission fumes.

One of the many advantages of the two strokes is that they can be easily shipped if you want them out of the way whereas with four strokes there is a ‘correct’ way to lay them down. They also tend to be lighter than 4 strokes and can be driven hard. They are much more thirsty than four stroke.

My original motor was a Johnson 5hp twin which provided plenty of power forward or astern, the sacrifice was the noise and exhaust fumes. I have used a Yamaha Malta 3 to 3.5? (ok in forward!) which was quite adequate in our tidal harbour.(Brancaster) Another motor I tried was a Yamaha 5 two stroke (twin ?) which sounded sweet but seemed to lack thrust, probably the wrong prop.

Presently, for the last eight years, I have aYamaha 6 (LS) the white topped model, which just fits in the well, it does scuff the rear of the cockpit as you suggest, but the lifting handle which fouls it could easily be removed to give a couple of inches clearance. As the Yamaha 4, 5 and 6 are all the same dimensions I believe, the choice might be more down to power/cost?

I recall that Yamaha used to have a sail drive prop for the 6 listed. I did find that the prop fitted/swapped from a short shaft Yamaha seems to give greater thrust, particularly in astern.

I think originally Parker Yachts suggested long or short shaft are ok.

One snag with the positioning of the outboard is that when aground the outboard tends to sit on the hard, not a problem as it seems to sit perfectly well on sand/mud, it also get the barnacles adhering to it, if left in place afloat for the season.

Brancaster has the support of a Yamaha main agent, hence my allegiance to Yamahas, which I am very pleased with. The specification can I believe include a charging circuit. (My thoughts are that this might be lightly used as the Parker 21 Sails so we’ll anyway).

It may be that a Suzuki has a weight or power advantage, if that is your nearest supplier. I notice that Tohatsu seem popular also with some Parker yachts and they can be supplied with charging circuits and sail drives.

I would be interested to know what conclusion you come to, I think this subject has been aired before should you have the opportunity to look back on the PSSA site.

Best Wishes


Rob Pierce  
#3 Posted : 07 January 2020 20:52:06(UTC)
Rank: Newbie

Posts: 4
Location: Wirral

Thanks for your detailed reply.

I have been doing a bit of further investigation on my boat today and have been able to remove the old outboard mounting bracket which has some large blocks between it and the front mounting face of the hull. Removing these means I can create some space by mounting the bracket further forward.

Interesting to note that you refer to the "later lifting/sliding mount". Surprisingly not fitted to my boat No. 98, the next to last Parker 21 to be built. Having removed the old wooden unit I shall look more closely at fitting a slide mount which could have a number of benefits.

Thanks for your help.


Rob Pierce

#4 Posted : 08 January 2020 09:02:58(UTC)
Rank: Administration

Posts: 275
Location: Fishguard, Wales

I have P21 no 18 - an early one - and replaced the original Mercury 5hp 2-stroke with a Yamaha 4hp 4-stroke a few years ago. I did remove the lifting handle on the rear of the engine, but it is a tight fit.

I find this engine gives plenty of power, and I can motor upwind in F5 if I have to, which I doubt the 2.3 would.

As Lindsey says, the long-shaft does touch the ground when the boat dries out, but I don't leave the engine in the well - I keep it in the cabin (the Yamaha's don't need to be kept upright). But it is a heavy beast to move around!

The only other thing I've found is that - unlike the 2-stroke - this engine has a strong magnetic field, which stops the autohelm from working on it's internal compass; I've had to wired in a separate fluxgate compass for it.

Hope to meet up with you some time - I'm in Fishguard, so Abersoch's not too far, and Pwllheli's a regular destination! We've a rally at New Quay at the end of June this year.


philip linsell  
#5 Posted : 08 January 2020 09:27:45(UTC)
Rank: Advanced Member

Posts: 133
Location: CHICHESTER, west sussex

Hi Rob

Many years ago I had a seal 22 with outboard in the well, the only problem I recall was the well filling with exhaust fumes, so choking the motor and smelling in the cockpit. The answer in those days was to tap the above water coolant/exhaust outlet, which caused the problem and run a plastic pipe though the stern to disperse the fumes. This solved the problem. I don't know if this is still relevant, my tender outboard still has this outlet.


#6 Posted : 12 January 2020 16:55:46(UTC)
Rank: Member

Posts: 11

Hi Rob,

I am also a new member, I have No. 71 Aries, currently based on Anglesey for the winter but was sailing out of Pwllheli through the summer.

In answer to your questions.

1. I would recommend a more powerful engine. Especially with some of the tides around north Wales.

2. A four stoke 5 or 6 hp seems the norm.

3. Don't know.

You may have seen my forum post about the Tohatshu 6hp Propane outboard I am trying.

My boat, purchase 18 months, ago came with a 9.8 2 stroke. Way too much power and the fumes were unpleasant.

The Propane engine is much quieter, no fumes to speak of and lots of power. Downside is that it can be a pain to start. So far.

It is a saildrive with charging circuit and fits the well 'well'.

If you want to meet up sometime and view it, and Aries for that matter, you'd be most welcome.



thanks 1 user thanked Mcwally for this useful post.
Rob Pierce on 17/01/2020(UTC)
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