Marlow Ropes Marstron Line

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As low as $0.28

Line and wire is sold by the foot.

In stock

Marlow Ropes' Marstron Line is a lightweight polypropylene single braid that is soft to handle and easy to coil. Marston floats and does not kink. This fast running and buoyant line is often used for Laser or Optimist painters, or bowlines. In cases where stretch and durability are not a factor, Marston can be used as a dinghy or small keelboat mainsheet. Due to the make of the line, Marstron should be covered or stored inside when not in use. UV damage will degrade the line making it weaker and unpleasant to hold.

Common Applications:

  • Great for dinghy painters or small keelboat mainsheets, where stretch is not a concern.


  • Marstron is a nubby line with a soft feel, great for grip and soft to handle.

Cover Material:  No cover

Core Material: Polypropylene

  • The 8-plait continuous-filament Polypropylene construction is lightweight, flexible, easy to coil and soft to handle. While Polypropylene floats and will not absorb water, be aware of moderate stretch and lower UV stability and abrasion resistance.

End Termination: Melted

  • Marstron melts easily for line termination.

Spliceable: No

  • Construction of line makes splicing too difficult.

Strippable: No

Size Specifics
Size: InchesSize: MillimetersTensile Strength (lbs.)Weight in Lbs/100 ft.
~3/16 5 816 0.84
~1/4 6 1,015 1.34
~5/16 8 1,566 2.02
~3/8 10 2,888 3.36
Line Characteristics
 Poor Average Excellent
Cleat/Clutch Holding          
Abrasion Resistance          
Thermal Resistance          
 Low Medium High
Water Absorption          

APS Advisor Custom Rigging and Splicing Services

More Information
Line Application Mainsheet, Painter/Tow Line
Line Construction Single Braid
Core Material Polypropylene
Can Strip Cover? No
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Video Transcript

Hi this is Kyle from APS. I'm here to share with you some of the characteristics of Marstron Line by Marlow Ropes.

This is available in four diameters, 3/16”, ¼”, 5/16” and 7/16”. This is primarily a mainsheet line for dinghies and small keelboats. It's made of 100% polypropylene. That means that it will float so it makes it perfect for a painter, for towing boats. It's soft. It's flexible. It is all polypropylene so it's not the most UV stable so if you have the opportunity when you're not using the boat to take it off or put it under cover, it'll extend the life of this.

It also has the way they braided it, it's quite nubby if you will. That gives it a surface it makes it easier to hold onto. Let's see, starting with the 3/16”, very flexible, and the ¼”, 5/16”, our most popular dinghy mainsheet diameter, and 7/16”.

This is Marstron Line by Marlow Ropes. For these and all of your line needs, visit us at