size to HP question

 hey guys

quick one, iv been searching for boats of recent and have found a fraser half cab 5.5m late 80's hull

it has a yamy 200hp v6 on the back (dont know the year, he sent a photo which reads 688 yamaha 5D-0146 maybe someone can decypher?)

iv been researching these size boats for a while now and 200HP seems to be overkill for this sie of a boat? most i have seen have ranged from 90hp-115hp

would anyone have any insight into this for me? im buying my first boat for rotto trips and kalbarri trips

also he has tried to find the engine year on the motor but cant find it anywhere?

thanks boys! :)

carnarvonite's picture

Posts: 8650

Date Joined: 24/07/07


Mon, 2015-05-25 15:26

Should be a manufacturers plate on it somewhere stating the maximum horsepower to be fitted.
Seems well overpowered with a 200 on it, if something happens your insurer may not want to pay up because its outside the guidelines.

Posts: 121

Date Joined: 05/05/14


Mon, 2015-05-25 18:07

 thanks for the feedback

il check the plate when i inspect

Ashen's picture

Posts: 1042

Date Joined: 22/03/13

 Hi mate. 200Hp on a mid 80s

Mon, 2015-05-25 16:58

 Hi mate. 200Hp on a mid-late 80s Fraser is a definate overkill. I had a Voyager LTD (same as Fraser 5.5) with a 150hp Johnson on the back. Although the boat was bloody fast, Due to the weight of the motor, the bow would lift too much unless i push it to 20+ knots. My Voyager topped out at about 38knots at WOT.

I now own a 19ft Penguin Huntriss runabout and took it out to OR yesterday. Bloody good performance, better handling than the Voyager! It might not look as good and sporty as a Voyager but it performed better! ;)




A fish in the hand is worth 10 in the water!

Posts: 121

Date Joined: 05/05/14


Mon, 2015-05-25 18:08

 thanks so 200 would only be good if cruising and a pretty quick speed?

whats about the water chop?

yeh iv just got no idea about how quick and how many HP should suit a hull

90HP just seems so low for rotto runs?

Ashen's picture

Posts: 1042

Date Joined: 22/03/13

 90 would be ok if the boat

Mon, 2015-05-25 19:09

 90 would be ok if the boat is lightly loaded but I reckon 115-130hp would be the most ideal size for that hull.


A fish in the hand is worth 10 in the water!

Posts: 250

Date Joined: 28/05/11

Likely overpowered, if it is

Tue, 2015-05-26 09:43

Likely overpowered, if it is you won't be able to get insurance.

Unusual, most of time issue is underpowered boats...

Posts: 121

Date Joined: 05/05/14

would you

Wed, 2015-05-27 09:56

would you guys strongly go against buying this boat?

or can i get away with MOREEEE POWERRR hahaha???


ranmar850's picture

Posts: 2702

Date Joined: 12/08/12

Too much is too much

Thu, 2015-05-28 20:20

 Boats aint like cars, dynamics are very different. You can't just keep powering up. Would you believe I saw a Swiftcraft Dominator (5.65m)for sale in Qld a while back with 225 hp bolted to the transom

FFS, mine with 120hp (2x60Hp) does 26knots+ @ 4000 rpm, at sea, not on a glass calm lake. I think they are actually rated to 200 max, which is probably more a reflection of the fact that they are built like a tank than anything. The transom on mine is 50mm thick measured through both  the upper and lower bung holes.

Posts: 121

Date Joined: 05/05/14


Fri, 2015-05-29 19:26

what kind of boat have you got? 

Posts: 90

Date Joined: 26/12/14


Thu, 2015-05-28 21:59

 The D in the code could be a year code which would mean it's a 1990 model. 

Scotte's picture

Posts: 1144

Date Joined: 07/12/06

 I would  sea trial.make sure

Fri, 2015-05-29 12:57

 I would  sea trial.make sure you put  ot bow  on into some chop  and see how it behave at all speeds. 

Posts: 121

Date Joined: 05/05/14


Fri, 2015-05-29 13:16

so im checking out the 200HP boat tomorrow will see how it goes

could you guys give me feedback on the boat below, pros and cons?

engine is a 2004 model with only 58 hours total

anything i should watch out for with such an old hull?

Perfish's picture

Posts: 103

Date Joined: 15/11/11

Risk of low hours

Fri, 2015-05-29 15:34


The biggest risk (as I understand it) with old motors with low hours is the extended periods that they are not used.  This gives time for things like impellers etc to stiffen up therefore reducing effectiveness or even disintegrating and any salt deposits to corrode the innards of the motor.  Ones that run more frequently keep the parts moving and water movement through helps reduce the salt build up and the associated corrosion.  Recommend that you have a trusted person (mechanic) have a good look at the donk for you.

No experience with this hull but would always recommend glass over ali for ride comfort - personal preference!

- Rob


Man with line in water catches fish!

You only get what you always got if you only do what you've always done!

Ashen's picture

Posts: 1042

Date Joined: 22/03/13

 Voyagers are a great boat!

Fri, 2015-05-29 13:56

 Voyagers are a great boat! 130HP is an ideal fit.  If the hours are genuine, then its a good buy. Yamaha saltwater series are known for being reliable and excellent runners.


When you inspect the Voyager, lift up the cushions in the cabin and look for rot on the wooden "stringers". I've seen rot in a few Voyagers of that age.


As with all old boats, thoroughly check everything...


Just so you know know, I sold my Voyager for $14000. But it was fully decked out with spotties, LED night lights, sound system, rocket launcher etc.  So if you can bargain and buy the one in Bunbury for about $10k it'll be a great buy, considering the good motor and other stuff already fitted.


Good luck mate.


A fish in the hand is worth 10 in the water!

Posts: 121

Date Joined: 05/05/14

great feedback

Fri, 2015-05-29 17:30

 thanks guys!

will keep you updated on how i go!


Posts: 2946

Date Joined: 03/03/10

lots of blokes in the NT

Fri, 2015-05-29 19:17

lots of blokes in the NT have huge outboards on their dingys I have seen a 16 ft ali dingy with a 12O hp Yammy on the back of it and it was tiller steer , I asked the bloke , why so much grunt on the back , he said because his fishing spot was 30km up the river and needed to get there quick and and get back quick to beat the tides

Posts: 121

Date Joined: 05/05/14


Fri, 2015-05-29 19:25

haha thats mental!

so your confident with the 200hp on the 5.5m fibreglass hull? :P


Posts: 6265

Date Joined: 26/04/14

 Those boats would be

Wed, 2015-06-03 07:24

 Those boats would be designed to carry that weight and reinforced throughout to withstand the stresses of that much horsepower 

Posts: 121

Date Joined: 05/05/14

checked it out

Mon, 2015-06-01 21:01

so i ended up checking out the boat over the weekend

trailer was in great condition (just passed the pits), dual axle, good tyres

the 200 yamy seemed to be running great, only tested in the river with no swell and she was flying on half throtle

couldnt find the hull plate to check the HP rating, only had a badge number on the back from the department of transport/marine i believe

will need a new sounder (only had a 4inch sounder which my mate told me were terrible)

also will need a front hardtop canopy installed with clears (no idea how much these will cost, can anyone shed some light?)

so all in all pretty decent tub, bloke wants $11500 for it

so im currently weighing up this tub and this other one in geraldton

link below

this is a 1985 hand woven wa hull (what does that mean)

120 johnson on the back with around 300-400 hours

i asked about the trailer this was the response "single axle, not to bad little rust, tows good bearing buddys all tyres and spear good condition but over all good"

looks like it will still need clears at the front

any feedback on this boat?

which one would you guys go for?

thanks for all the feedback tho its really helping and i think im close to making a decision!

cheers lads

also if the person advertising this boat is reading i hope you dont mind me getting some advice


carnarvonite's picture

Posts: 8650

Date Joined: 24/07/07


Tue, 2015-06-02 06:38

From your description of both boats, IMO, I would be looking somewhere else on both counts.
The first boat is way over powered and doing a test run on the river is not the way to find out what it is like. All shit and good boats perform well on flat water and the seller probably knows this. The other is 30 years old, hand woven glass means that it has been laid by hand with all the bubbles rolled out before the next layer of cloth is applied. The trailer may be suspect as he describes "a little bit of rust", bearing buddies are about $50 a pair so that doesn't do anything for me as well. 120 Johnson on the back and only his word on how many hours it has done, again would be having second thoughts.

Posts: 121

Date Joined: 05/05/14

thanks carnarvonite

Tue, 2015-06-02 12:09

thanks for the feedback, if i do get the engine inspected and its all good, and the trailer seems legit im assuming you would go for that option over the other one?

is having a 200 on the back really that much of a big deal in terms of weight compared to lets say a 135-150hp?


carnarvonite's picture

Posts: 8650

Date Joined: 24/07/07


Tue, 2015-06-02 12:47

Weight isn't the issue, it's the horsepower, too much and the boat can fall to bits around you. it's not built for the stresses the motor can put on it.

I would have doubts about the other as well, it's a 30year old hull and an engine that he says has not many hours on it and no way to prove otherwise, you could have it for a week and it dies leaving you with no come back on him.

Look around, there are some better bargains about, don't jump at the first thing that appeals to you. We have all probably done the same thing with our first boat and learnt from it

Ashen's picture

Posts: 1042

Date Joined: 22/03/13

 Wise advice

Tue, 2015-06-02 14:21

 Wise words from a very wise gentleman!  


Surfy, take Carnarvonite's advice into serious consideration and don't rush! 


A fish in the hand is worth 10 in the water!

Posts: 121

Date Joined: 05/05/14

new add

Tue, 2015-06-02 20:02

hey guys the bloke with the 200hp on the 5.5m hull has placed an add back on gumtree have a look

Posts: 6265

Date Joined: 26/04/14

 Are those 5 X 22ltr fuel

Wed, 2015-06-03 07:21

 Are those 5 X 22ltr fuel tanks connected and sitting on the deck  

interested to see how much water swamps the rear in choppy conditions. 


You sound like your trying to find a positive in this boat.

Listen to the wise ones above bud, ive not much boat buying experience but I wouldn't go near that. 

Just imagine all that horsepower twisting and rattling a hull rated for possible 130hp extra weight on transom 

and the biggest problem is no HIN plate and probably no insurance

carnarvonite's picture

Posts: 8650

Date Joined: 24/07/07

rego number

Wed, 2015-06-03 06:49

Going by the rego number, its an old boat as well.
Not one I would even consider looking at. All you would be buying was a 200hp outboard

Posts: 121

Date Joined: 05/05/14


Wed, 2015-06-03 09:34

thanks guys i will keep my eyes open for another deal

possibly move the budget up the the $20k mark

im considering a trailcraft now theres one thats 4.85m 2006 model with a 90 HP evinrude e-tec on the back with 400 hours

going for 17.5k

link below


i guess i have to reavaluate my budget and see if my money will allow me to buy a half decent blue water boat or if im just going to waste it buying a boat that has no value anymore

iv heard these trailcrafts are great value and should be able to get me out the back of rotto on a good day

also is there a cheaper version of the trailcraft? they seem to be pretty pricey for what your getting?