Choosing Thermals to stay cosy, by Simon Phillips, Seaway yacht delivery

When it comes to selecting thermals for sailing and yacht delivery, it’s essential to use materials that offer warmth, moisture management, and versatility. Here are some of the best types of thermals commonly used and tested by my skippers and I at Seaway:

1. Merino Wool: – by far our favourites – voted by our skippers and crew at Seaway Yacht Delivery. Highest cost, but our favourite!

  • Merino wool thermals are highly regarded for their exceptional warmth-to-weight ratio and moisture-wicking properties.
  • Wool naturally regulates body temperature, keeping sailors warm in cold conditions and cool in warmer weather.
  • Merino wool is soft, lightweight, and breathable, making it comfortable to wear for extended periods on the water.
  • They have excellent anti-microbial properties too, so wearing them for longer periods of time is not too offensive for other crew!

2. Synthetic Fabrics (e.g., Polyester, Nylon, Polypropylene):

  • Synthetic thermals are popular whilst sailing for their quick-drying capabilities and durability.
  • Fabrics like polyester, nylon, and polypropylene excel at wicking moisture away from the skin, keeping us dry and comfortable.
  • Synthetic materials are often more affordable than merino wool and may offer similar performance in terms of moisture management.

3. Thermal Fleece – more of a mid layer but equally good as a base layer if thin / lightweight:

  • Thermal fleece garments provide excellent insulation and warmth, making them well-suited for cold-weather sailing. Some fleeces are windproof & waterproof too.
  • Fleece traps heat close to the body while remaining breathable, preventing overheating during strenuous activity.
  • Fleece thermals are soft, lightweight, and quick-drying, offering comfort and versatility on the water.

4. Hybrid Fabrics:

  • Some thermals combine merino wool with synthetic fibres to harness the benefits of both materials.
  • Hybrid fabrics offer the warmth and moisture-wicking properties of wool, coupled with the durability and quick-drying capabilities of synthetics.
  • These fabrics provide a balance of performance and versatility, making them suitable for a wide range of sailing conditions.

5. Compression Thermals:

  • Compression thermals are designed to provide targeted support and muscle compression, enhancing circulation and reducing fatigue during physical activity.
  • These garments are often made from a blend of stretchy materials such as spandex or elastane, offering a snug and supportive fit.
  • Compression thermals can improve performance and recovery for sailors engaged in competitive racing or long-distance voyages.

6. Thermal Base Layers:

  • Thermal base layers serve as the foundation of a layered clothing system, providing insulation and moisture management close to the skin.
  • Look for base layers with flatlock seams to minimize chafing and discomfort during extended wear.
  • Base layers are available in various weights and thicknesses to accommodate different temperature ranges and sailing conditions.

When choosing thermals for sailing, it’s essential to consider factors such as insulation, moisture management, breathability, and comfort. By selecting high-quality garments designed for the demands of marine environments, we can stay warm, dry, and comfortable throughout our adventures on the water.