Over 35 years of professional experience in marine and aerospace industries.

A bespoke advanced international marine surveying service specializing in composite built structures.

Advanced NDT technology and traditional marine surveying methods are used.

European International marine surveys, inspections, and sea trials are carried out on sailing yachts, motor yachts, machinery, and components.

Accredited NDT Marine Surveyor.

NDT inspections and consultancy are conducted to aerospace standards in accordance with EN 4179.

Marine surveys are to Lloyd's certified standards.

Award winner from the UK Department for Innovation in composites.

European Yacht Surveyors Association Member.



NDT stands for non-destructive testing, it is a way of testing without destroying a component or structure. The component or structure can continue to be used and that the non-destructive testing method has done no harm. In today's world where new materials are being developed, older materials and bonding methods are being subjected to higher pressures and loads, NDT ensures that materials can continue to operate to their highest capacity with the assurance that they will not fail within predetermined time limits. NDT can be used to ensure the quality right from the raw material stage through fabrication and processing to pre-service and in-service inspection. Harwood Marine surveys carry out NDT inspections on sailing yachts, motor yachts, components, and machinery.



Thermography is a non-contact technology that measures or “sees” infrared wavelengths emitted from objects, and then converts the temperature information into an image.The image features a color palette that represents a temperature range of the image displayed. Hot spots or a rise in temperature often indicate problems or potential failure. Thermal imagers are fully radiometric by measuring and storing temperatures at every point in the image


Inspection lights are used in Non-Destructive Testing (NDT) for fluorescing fluorescent magnetic inks and fluorescent dye penetrants. UV light or black light with a peak wavelength of 365nm creates the optimal viewing conditions to highlight any anomalies present in composites and metallic components.



When a sound wave strikes an object or material, it bounces back, or echoes. In an ultrasound examination, a transducer both sends the sound waves into the material and receives the echoing waves. When the transducer is pressed against the material, it directs small pulses of inaudible, high-frequency sound waves into the material. Ultrasound ABC scan is used on metallic, composite structures and components


The principle of liquid penetrant testing is that the liquid penetrant is drawn into the surface-breaking crack by capillary action and excess surface penetrant is then removed; a developer (typically a dry powder) is then applied to the surface, to draw out the penetrant in the crack and produce a surface indication.





The pre-purchase full condition survey is the most comprehensive type of survey and is carried out for the purchaser when purchasing a yacht. A full condition survey provides a full appraisal of the vessels structures, build quality and all equipment.


Only so much can be assessed statically or ashore and there are significant benefits of a sea trial to reinforce the findings or recommendations from the survey inspection. Sea trials are carried out on sailing yachts and motor yachts.


New build surveys are carried out as part of a vessel handover from the chosen manufacturer to the client. This can be undertaken as either a one-off process at the end of build (to include sea trials) or when each key stage is completed.


A damage survey is carried out to assess the extent of damage sustained in all respects to a vessel after an incident. It is most important that all defects are discovered before reaching a settlement with a third party or insurance company. When there is major damage, it is advisable for the owner to engage a surveyor even though the insurance company may appoint their own surveyor.


Before a refit can be carried out, inspections and sea trials are undertaken to inform all involved what is required for the refit. During the refit key stage inspections are carried out to ensure all new or refurbished equipment on board is being updated or replaced and installed to a good standard. Final inspections and sea trials are carried out to ensure all systems are working correctly before the yacht is signed off to the owner.


The structural insurance yacht survey may be used when a full condition survey is considered unnecessary. For Instance when the vessel is nearly new or when equipment and /or machinery have been separately inspected or not required to be inspected. It can also be required by insurance companies when insurance renewal is requested.


Components inspections are carried out to confirm everything on board is working correctly, in date, and is fit for purpose before a vessel leaves a refit yard manufactures or before a handover is completed.


Warranty inspections and surveys provide third-party reviews and approval of work carried out on new and used yachts. This type of survey is normally carried out before a vessel leaves the manufacturers or a handover is in progress and the new owner requests inspections be carried out or when a vessel has been in for refit and independent inspections are required to bring any discrepancies to a successful conclusion.


Oil analysis is a routine activity for analyzing oil health, oil contamination and machine wear. The purpose of an oil analysis program is to verify that a lubricated machine is operating according to expectations. When an abnormal condition or parameter is identified through oil analysis, immediate actions can be taken to correct the root cause or to mitigate a developing failure. An obvious reason to perform oil analysis is to understand the condition of the oil, but it is also intended to help bring to light the condition of the machine from which the oil sample was taken. There are three main categories of oil analysis: fluid properties, contamination and wear debris.