Cetec Marine Ltd

Boat surveyors and consultants based in surrey.

Wednesday 9th of August 2017

Phone Number: 01784 456 872

Mobile Number: 07860 254 369

The Complete Guide to Marine Surveys

Your boat or yacht is likely to be one of the more valuable possessions that you own. In many cases, it is held as a capital investment which is second only to your house. So it is sensible to have the boat inspected for any potential problems. A marine survey should be completed by an  experienced and competent marine surveyor.



The Marine Surveyor

Cetec Marine Ltd  offer a range of motor boat and yacht surveys. We are based in Surrey but travel to all waterways throughout the UK to conduct marine surveys.

We offer marine surveys for boats that are usually between 7m and 25m. We work with boats from the commercial and leisure sector as well as private or corporate clients.

marine surveys

Our boat surveys are tailored to the individual client. Each survey is completed for the specific purpose of our client's  requirements. These can be Insurance surveys,  Pre-purchase surveys or accident damage surveys.

Whether it is a high performance, sail or power boat, we can provide a survey to suit your needs. Our reputation and experience will ensure that you are confident in your investment. All communication  and correspondence are treated in the strictest confidence.

  • Pre-Purchase Surveys
  • Insurance Damage Surveys
  • Insurance Renewal Surveys
  • Accompanied Viewings
  • Osmosis Inspections
  • Winter Layup & Prelaunch Inspections
  • Pre Inspection Viewings
  • Tonnage Measurements
  • Valuations
  • Hull and Deck Surveys
  • General Consultancy
  • Engine & Drive Inspections

 Cetec Marine Ltd  are members of the  International Institute of Marine Surveying (IIMS).  International Institute of Marine Surveying are the  industry-leading professional organisation for marine surveyors.

We remain focused on our clients’ interests, We work to provide bespoke services to the highest standards  within the industry.

We encourage our clients to keep in contact. We can continue to offer ongoing advice for your boat or yacht.  Customers will find our company responsive, approachable and enthusiastic.

Work is carried out according to the IIMS Code of Practice. We work independently of agencies and brokers. We also carry full public liability and  professional indemnity insurance.

The survey reports are in-depth and objective. They are tailored to each customer and consider your needs. The survey is detailed with realistic advice that focuses on safety  and serviceability. 


Pre-Purchase Surveys

Our standard pre–purchase marine survey is tailored to the purchaser instead of the insurance company. We offer a reporting format that is easily understood by the expert and novice alike. 

The items listed below are covered under a standard Pre-Purchase survey. This may vary according to the type of boat and the requirements  agreed on  before the survey is carried out. 

Details Of Vessel

  • General description
  • History, Registration, Dimensions, Etc.
  • Hull, Deck And Structure

  • Hull below waterline 
  •  Deck moulding  
  • Cockpit  
  • Bulkheads and structural stiffening / internal mouldings  
  • Keel 
  • Topsides above waterline / rubbing strakes 
  • Coach roof 
  • Hull / Deck joint 
  • Steering, Stern Gear And Skin Fittings 

  • Stern gear 
  • Skin Fittings/hull apertures  
  • Rudder and steering 
  • Cathodic protection 
  • On Deck

  • Main companionway 
  • Windows /  Ports 
  • Other deck gear and fittings 
  • Davits & boarding ladders 
  • Stanchions,  pulpit, lifelines, pushpit and jackstays 
  • Rigging attachment points 
  • Ground tackle and mooring arrangements 
  • Rig

  • Sails & covers 
  • Running Rigging 
  • Spars
  • Standing Rigging 
  • Safety

  • Bilge pumping arrangements 
  • Emergency equipment and Lifesaving 
  • Navigation lights 
  • Fire fighting equipment
  • Engine

  • Fuel System  
  • Engine and installation 
  • Accommodation And Onboard Systems

  • Accommodation in general 
  • Gas Installation 
  • Fresh water tanks/water delivery 
  • Heads  
  • Electronics and navigation equipment 
  • Electrical installation 
  • Heating and refrigeration
  • Summaries

  • Summary Of Advisory Notes & Recommendations
  • Conclusion
  • Appendix

  • Valuation 
  • List of Safety Equipment 
  • Photos of defects found 

  • Insurance Renewal Surveys

    An insurance renewal survey is carried out for the benefit of your insurance company. From this information, insurers can determine if the boat is an acceptable insurance risk. The insurance survey is not as comprehensive as the full pre-purchase survey.

    insurance survey

    It is known as a  structural condition survey. It will focus on the structural integrity of the boat.  The age and condition of the mast and rigging will be inspected.  The fire fighting equipment, gas system, the hoses and seacocks will all be examined for safety.

    Most insurance companies require a survey after the boat is fifteen to twenty years old. It will then be required again every five to seven years afterwards. The boat will need to be out of the water for the insurance survey. 


    Tonnage Measurements

    Vessels which measure up to twenty-four metres Load Line Length can be measured by I.I.M.S. and Y.D.S.A. This excludes Fishing Vessels. Tonnage is measured using the simplified method. This is calculated by measuring the depth, length and breadth.

    The measurement procedure for boats under twenty-four  metres is different.   Metric measurements are now used to the nearest centimetre rather than the foot. The Tonnage calculation  is as follows:

    Length  x Breath x Depth x 0,16


    Boat Valuations

    A professional valuation is required to ensure the required details are submitted. This will allow an informed decision to be made by all interested parties who requested the valuation.

    A boat valuation may be required for a range of reasons.

    • To insure the boat for the next year, at the current market value
    • To find the current market value of the boat
    • For Finance purposes
    • To use the market value to make an informed decision whether to sell the vessel
    • A Finance company may request an update of the market value.  This will assist them in their decisions
    • Other reasons, understood by the interested parties
    • Valuations which are required by Insurance Companies

    When you request a valuation, it is important to state who it should be addressed to.  You should state what purpose the valuation is required for and to who the invoice is to be addressed to.

    There is no point in insuring the boat for higher than the current market value. Although you may require it for an agreed amount stated within the Insurance policy. 

    Boat Finder Survey

    This is a brief inspection of a potential boat for purchase. An inspection can be carried out on a range of similar vessels so that you can reduce the selection before conducting a full survey.


    Hull and Deck Surveys

    We will comprehensively review the vessel.  The standard of fixtures and fittings and finish is inspected.  We will highlight  what we deem to be acceptable. We will also advise what needs to be reviewed. We will usually take the boat out on a sea trial.

    Following the survey, the marine surveyor will prepare a detailed report. This is based on the structure.  The conclusion of the report includes our recommendations.

    Hull, Deck and Structure

  • Details of Subject Vessel (General Description, Dimensions, Registration)
  • Topsides above Waterline including Rubbing Strake
  • Cockpit
  • Bulkheads/Structural Stiffening /Internal Mouldings
  • Keel
  • Hull below Waterline
  • Deck Moulding
  • Coachroof
  • Hull/Deck Join
  • Steering, Stern Gear, and Skin Fittings etc
  • Rudder and Steering

  • Stern Gear
  • Skin Fittings and other through Hull Apertures
  • Cathodic Protection
  • Accommodation and On Board Systems
  • Accommodation General

  • Gas Installation
  • Heads
  • Electronic and Navigation Equipment
  • On Deck
  • Fresh Water Tanks and Delivery
  • Electrical Installation
  • Heating and refrigeration
  • Main Companionway and other Accesses 

  • Ports Windows etc
  • Rigging Attachment Points
  • Ground Tackle and Mooring Arrangements
  • Davits and Boarding Ladders
  • Pulpit, Stanchions, Pushpit, Lifelines & Jackstays
  • Other Deck Gear and Fittings
  • Rig and Spars

  • Standing Rigging
  • Sails and Covers etc
  • Running Rigging
  • Safety

  • Navigation Lights
  • Firefighting Equipment
  • Bilge Pumping Arrangements
  • Lifesaving and Emergency Equipment
  • Engine

  • Engine and Installation
  • Fuel System

  • Insurance Damage Surveys

    Damage Surveys are commonly required by an insurance company. This will assess the level of damage to a boat as a result of an accident. The surveyor will complete a thorough examination. They will then report on the boat condition. The report will include repair recommendations, probable causes of damage and an estimated cost of the repairs. This will require liaising with repairers, boat yards, transportation specialists and the client.

    insurance survey

    Typical types of damage investigated in the survey include: 

    • Boat Trailer Accidents
    • Sinking
    • Leaking Fuel Tanks
    • Allision 
    • Collision
    • Groundings
    • Severe Weather 
    • Fire / Arson
    • Pollution Mitigation
    • Striking Submerged Objects
    • Mechanical Problems

    A damage survey report typically includes: 

    • If no estimates, Preparation of a Damage Appraisal 
    • Reported circumstances of the damage
    • Opinion as to the cause of loss 
    • Identification and description of the vessel and its condition
    • Statements from owners, operators and witnesses 
    • Description of damages 
    • Pre-Loss and Post-Loss valuation of the vessel 
    • Review of repair estimates for reasonableness

    Winter Layup

    Some vessels may have sustained damage below the waterline during the season. This may only become evident following a layup and lift out.

    The surveyor will examine the keel stern gear,    engine and hull.   They will create the report to include any work that may be necessary.The type of work required will be commented on. This will include the  time and cost required.

    Pre-launch checks

    Many boat owners complete their own winterisation. However, they will usually require reassurance of the safety of their vessel for the forthcoming season.

    A marine surveyor will give your vessel a safety check before launch. The areas  that will be included are: 

    Engine / safety equipment / running rigging / bow thrusters / propeller / rudder / stern gear / bearings / keel / standing rigging 

    A  verbal report is initially provided. This is followed by a written one. This will confirm the details that may require attention prior to launch.

    We recommend that this check is completed at least two weeks before launch. This will allow enough time to facilitate any work that is required.


    Marine Surveys

    We hope you have found our guide to marine surveys useful. If you require a boat survey in Surrey or the UK Cetec Marine Ltd  visit all UK waterways.