1. Why
do you promote the use of Steel for large Inland Waterways craft?
Steel is a
proven material for the construction of Inland Waterways craft. A well designed steel boat will last a lifetime - there
are Piper Boats cruising the canal network which are more than 35 years young. Steel also has a high abrasion resistance
compared to Aluminum or Fibreglass - this is of particular significance on our shallow inland waterways. Our experience
has shown that abrasion and galvanic corrosion are the primary causes of ageing of metal hulls. Piperboats have
the following design features which maximise hull life:
- Heavy gauge 8mm/10mm scantlings
- Fully isolated electrical systems
to minimse galvanic corrosion risk
- Dry bilge designs to minimise risk
of internal corrosion
- Shallow draught to minimise risk
of underwater damage
- Efficient hull designs to reduce
water turbulence and reduce water borne particle corrosion
Aluminum is
a great material for boatbuilding - it is lightweight, easy to form and has a high corrosion resistance. There are risks
with crevice corrosion on welded joints and the heat affected area of the weld can have a reduced strength. However,
with good design and correct maintenance, Aluminum is a highly suitable material for the building of high performance, deep
water boats. If we were building a semi-planing high speed boat, or a boat which needed to be trailered on a regular
basis, then we would build with Aluminum. However, Aluminum is significantly less Abrasion Resistant than
steel which makes it less suitable for our Inland Waterways which can be shallow and contain significant waterborne particles.
Aluminum is also susceptible to stray current corrosion and whilst good design can, in theory, mitigate the risk, stray currents
will be present in the marina environment.
Fiberglass
is a low cost, proven material for Boatbuilding. It has been used extensively for Inland Waterway craft for many years.
It is not suitable for large Inland Waterways craft due to its comparatively low impact strength and poor abrasion resistance.
2. Would
PiperBoats build in Aluminum or Fibreglass?
Yes, if appropriate
we would build in Aluminum. However, at present we are focusing on robust Inland Waterways craft.
We have tried
building with fibreglass in the late 60's and have concluded that this is not suited to our boats.
3. Don't
steel boats need a great deal of maintenance?
In short, no
more than a Fibreglass or Aluminum boat.
Inland waterway
boating is a 'contact sport' - any damage done to paint work below the waterline must be addressed on a periodic schedule.
We recommend
that our boats are dry-docked every 2 years and 2 layers of comastic paint applied. Typically this costs between
£4.70 and £7.50 per foot depending on which Marina you use. That equates to a cost of approximately £150 - £200
per year for a 50ft boat to protect you investment. We also recommend that stern gear and rudder assemblies are
visually inspected whilst the boat is in dry dock.
It may be necessary
to replace the sacrificial anodes whilst the boat is dry-docked. It isn't possible to say how long anodes will last
because there decay is primarily dependant on the environment in which you store or cruise your boat.
Painting above
the waterline is mainly cosmetic - we recommend you touch up and paint damage at the end of each season and plan to have a
repaint every 7 - 10 years. One of our long established Customers visited our Beale Park stand and was proud to say
that his 19 year old Piper was still on the original paintwork!
4. How
long will the boat last?
The lifetime
of a boat depends very much on the environment in which is it used and moored. A Piper boat cruised on the English
inland waterways and maintained correctly will last in excess of 38 years without the need for replating etc.
We can say this with confidence - our 38 year old boats are still running strong.
There are many
steel craft on our canal system which are more than 100 years old and still being used on a regular basis.
5. Do
you supply boats to a part-fit level?
Yes, we offer
boats from any stage of completion.
6. What
about depreciation?
Piper boats
have extremely good residual values, primarily due to the high quality design, workmanship and limited production - no
more than 1000 boats in just under 40 years of production.
7. Is
there a Owners club?
Yes, it has
been established for nearly 25 years and is still going strong. Check it out at http://www.piperowners.co.uk/