JM Marine Survey
Marine Surveyor Singapore


Jamie Morrison is Senior Marine Surveyor at JM Marine Surveys Singapore Pte Ltd, a Singapore-owned company. JMMS Singapore inspects yachts, powerboats and superyachts in the SE Asia region.

In Asia, we specialise in sailing catamarans and luxury motor yachts; but also inspect racing and cruising monohulls, power cruisers, sports boats and charter yachts.

Singapore and the southern end of Peninsular Malaysia are very close to the Equator, with an unusual set of climatic conditions that change little from one month to the next. Seawater temperatures, ultraviolet radiation and air humidity are all extremely high, while average wind speed is consistently low. 

This produces a special set of problems for boat owners – particularly when vessels have been designed and built for temperate climates. Typical marine survey findings on a boat in Equatorial Singapore make an interesting comparison with those of a yacht survey from temperate Sydney.

At these latitudes, fibreglass hulls suffer accelerated hydrolysis and osmotic blistering (osmosis), with blisters sometimes appearing on production yachts of less than 3 years old. Topsides and deck mouldings can also be affected, especially where fenders or cushions hold moisture against the gelcoat for prolonged periods.

High temperatures and humidity speed up the corrosion of metal fittings above and below the waterline. Skin-fittings and through-hull assemblies are adversely affected and have the potential to sink a boat, even while sitting in a marina berth. Some European boatbuilders use poor quality marine plumbing fittings that degrade especially fast in this climate.

Engine room corrosion can be one of the most expensive effects of a hot humid climate. A few cupfuls of water left in a poorly-ventilated engine room bilge is sufficient to produce sauna-like conditions: not an ideal environment for a high performance engine such as Mercruiser. Ventilation and regular maintenance are essential.

Ultraviolet radiation is another culprit, attacking many of the polymeric products found on modern boats.  Sealants degrade at an alarming speed, presenting a marine surveyor with the difficult challenge of sourcing leaks.

Commercial shipyards abound here, but yacht haul-out and repair facilities are few and far between. While we’re not familiar with every facility in the region, we’ve been here for some time, and have carried out pre-purchase and insurance inspections in many yards.  Please contact us if you’d like some guidance on suitability for a particular boat and purpose.

Sailing multihulls are popular in the region, and present an interesting and complex set of interlinked structural considerations.

Brands we frequently see here include: Lagoon, Fountaine Pajot, Catana, Prout, Leopard, Island Spirit, Outremer, Switch, St Francis and Seawind.

Motor yacht surveys include: Azimut, Fairline, Princess, Beneteau, Meridian, Monte Carlo Yachts, Grand Banks, Sunseeker, Chris-Craft, Chaparral, Sea Ray and Four Winns - among others.

For marine insurance companies, underwriters and insurers, we offer a damage and claims assessment service. This includes detailed structural surveys and upper rig inspections. We regularly travel to Malaysia and Thailand.


In Singapore:

JM Marine Surveys Singapore Pte Ltd 
Phone: +65 8540 0835 / +60 196 073 644
Company no. 201404814R
PO Box 711, Harbourfront Post Office, 910934 Singapore

In Australia:

JM Marine Survey 
Phone: 0437 389 320 / +61 437 389 320
ABN 50967492201
P.O. Box 300, Seaforth, NSW 2092, Australia