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Question & Answer service:                        

To open a form box for a question regarding anything to do with surveys, timber & grp construction and survey problems and free advice where possible, just fill in the form with boat type and contact details with a brief resume of the problem or query & we will answer within a short time, usually within a day or two. Click HERE to open the box. Feel free to leave a contact telephone number but it is not obligatory.

Need an idea of repair or modification cost:                                                          

If you need an idea of the cost of a repair or addition on any type of construction, i.e new rubbing strakes, new joinery, Grp & wood hull damage etc. use the above form just to describe the work needed & we might be able to give you an approximate cost based on your description. Click HERE to open the box Some repairs may be subject to locality, generally the area will be from Poole in the east to Seaton in the west where access to the vessel is needed. However some items such as  tillers etc. can be produced to pattern from  anywhere in the UK.                      

You will be returned the home page immediately afterwards. Alternatively use your BACK button on the browser or right click your mouse

SAMPLE SURVEY?  Timber or GRP & survey template Click here         Skype me Click here       

 PDF files on Osmosis repairs, Moisture meters and much more Click here 

Need a bit more knowledge on what timber to use/steaming timber & much more CLICK HERE

Contact John Lilley

Tel. 01258 837153 

mobile numbers  07963 011390

 & 07501 144631 

Email  johnlilley@seasurveys.co.uk

 

 Photos of different problems encountered on surveys for GRP

Click on an image for larger photo

 

Westerly Centaur rudders (1), one stock obviously bent.   A common problem with many unsupported spade rudders.  Snagging pots & lines at speed & grounding are the usual reasons.

 
Westerly Centaur rudder (2) Compare these two photos , the tip of this rudder is nearly touching the hull, above photo is where it should be

 
Serious cracking at the stock entry point on rudder. Water easily enters here. Continued flexing causes more damage allowing more flexing causing even more damage.

 
Broken lifeline, often goes unseen under pvc outer. Tell tale signs are rusty staining at nicks in the PVC. The strands are so fine in galvanised flexible rigging that rust soon destroys the integrity.

 

Gate valve with seriously corroded handle and single corroding jubilee clip. The skin fitting is also an area where corrosion can occur unseen. Look for pink/red metal indicating corroded bronze. The PVC pipe is also old, these become almost rigid with age & quite brittle.
 
Stressing around hull support on cradle
Always ensure the supports are on bulkhead positions whenever possible, and check for hull distortion.

 
Kinked gas pipe, thin walled copper will fracture easily
Thin walled copper pipe will not take tight turns without kinking, use heavy wall pipe

 

Hard spot crack over a bulkhead, seems minor but these can be serious, particularly if extending below waterline

 
Hull distortion at rigging plates
Some extra reinforcing is required
 
Osmosis blistering on rudder, not uncommon to get large blisters here, generally not unduly structurally serious, more important that the internal tangs are sound along with good bondings

 
Typical relatively profuse and advanced blistering. This would probably benefit from treatment but not structurally affecting the vessel to any great degree at this time
Trapper 28 after going aground and twisting keel, the keel was no longer vertical to the hull and the keel bolts were all bent.
 
Stranded standing rigging stainless steel at swage. Stainless work hardens and this is impossible to see or diagnose until fractured...too late then.
 
Corrosion stained leakage, possibly mild steel rudder tangs or internals
 
Stress cracks at waterline, these are caused by excessive flexing and thin laminate. They extend below waterline
 

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