Influence of salt and fresh water on the condition of your motor yacht
Anyone looking to buy a motor yacht often faces an important choice : should you go for a steel motor yacht or a GRP motor yacht ? In addition to comfort and boating characteristics, the condition of a yacht plays a crucial role. The boating area is also very important. A motor yacht that has cruised on salt water for years is subject to different stresses than a vessel that has only been used on fresh water.
In this blog, we explain the differences and what you should look out for when assessing the condition of a motor yacht.
A steel motor yacht and cruising on salt or fresh water
A steel motor yacht is known for its robust appearance, stability and long service life. However, steel can be susceptible to corrosion, which directly affects the condition of the yacht.
A steel motor yacht on salt water
Salt water is aggressive to steel. It accelerates rust formation, especially in vulnerable areas such as :
- Below the waterline.
- Bilges and wet areas.
- Around hull penetrations.
A steel motor yacht that has cruised on salt water can be in excellent condition, provided that it has been professionally and consistently maintained. This includes a good paint system, regular inspections and correct cathodic protection with sacrificial anodes. If this maintenance is lacking, hidden rust problems can arise that significantly reduce the value of the yacht.
A steel motor yacht on fresh water
On fresh water, the load on steel is considerably less. Rust formation is slower, which means that steel motor yachts on inland waterways are often in better condition. Nevertheless, maintenance remains essential.
Further information about steel motor yachts for sale can be found at Dolman Yachting.
Advantages of a steel motor yacht
- Very strong and durable.
- Easy to repair.
- Suitable for long voyages.
Disadvantages of steel motor yachts
- Maintenance-intensive.
- Extra attention required in salt water.
A GRP motor yacht and its boating area
A GRP motor yacht is popular because of its low maintenance and modern appearance. GRP does not rust, which is an important advantage over steel.
A GRP motor yacht on salt water
GRP is ideal for salt water. The hull itself is not affected by corrosion. However, osmosis can occur in older vessels : moisture penetrates the laminate and causes blistering. This risk increases with prolonged exposure to water, especially in older constructions.
GRP motor yacht on fresh water
A GRP motor yacht that cruises on fresh water is generally less at risk of osmosis. The condition of the yacht is mainly determined by age, UV radiation and general maintenance. Gelcoat ageing and hairline cracks are usually cosmetic and can be easily repaired.
Further information about GRP motor yachts for sale can be found at Dolman Yachting.
Advantages of GRP motor yachts
- No rust formation.
- Easy to maintain.
- Lower maintenance costs.
Disadvantages of GRP motor yachts
- Risk of osmosis.
- Laminate repairs require specialist expertise.
- UV ageing of gelcoat.
What really determines the condition of a motor yacht ?
Whether a motor yacht is in good condition depends not only on whether it is made of steel or GRP. The decisive factors are :
- Maintenance history.
- Use on salt or fresh water.
- Age of the vessel.
- Regular technical inspections.
When buying a motor yacht, it is always advisable to consult a professional yachtbroker.
Conclusion : should you buy a motor yacht in steel or GRP ?
A steel motor yacht offers power and character but requires more maintenance, especially on salt water. A GRP motor yacht is lower maintenance and versatile but requires attention to osmosis and ageing. The best choice depends on your boating area, use and willingness to maintain the yacht.