Can Nylon Rope Go in Water? Uses, Durability, and Care Tips

Ropes are used for many different things, such as tying boats, fishing, climbing, and camping. Some ropes are made for dry conditions, while others are designed to be used in water. But what about nylon rope? Can it go in the water?

Nylon rope is one of the strongest and most popular ropes used today. People like it because it is flexible, durable, and can handle heavy loads. Many people use nylon rope for outdoor activities, but when it gets wet, it behaves differently than when it is dry.

In this article, we will answer the question: Can nylon rope go in the water? We will also explain what happens when it gets wet, how it compares to other ropes, and when it is a good choice for water-related activities.

Can Nylon Rope Be Used in Water?

Yes, nylon rope can go in the water, but it behaves differently when wet compared to when it is dry. Many people use nylon rope for boating, fishing, camping, and outdoor activities, but it is important to understand how water affects its performance.

Let’s explore whether nylon rope is a good choice for water use and what happens when it gets wet.

1. Nylon Rope Can Get Wet and Still Work Well

Nylon rope is made from strong synthetic fibers that do not rot or break down in water.
It is commonly used for tying boats, lifting heavy loads, and outdoor work, even in wet conditions.
Unlike natural fiber ropes like cotton or manila, nylon does not become weak or moldy when wet.

Example: If you use nylon rope for camping and it gets wet in the rain, it will still be strong and useful once it dries.

2. Nylon Rope Absorbs Water and Becomes Heavier

One thing to know about nylon rope is that it absorbs water, making it heavier when wet.
Some other ropes, like polypropylene, do not absorb water and stay light even when wet.
When nylon absorbs water, it takes longer to dry than water-resistant ropes like polyester.

Example: If you use nylon rope on a boat, it may feel heavier after being in the water for a long time.

3. Nylon Rope Loses Some Strength When Wet

When nylon rope is wet, it can lose 10–20% of its strength.
This happens because water gets into the fibers, making them less rigid and more stretchy.
Once the rope dries completely, it regains its full strength.

Example: If you are using nylon rope to lift heavy objects, you should remember that it may not be as strong when wet as it is when dry.

4. Nylon Rope Sinks in Water

Nylon rope does not float because it is denser than water.
Some other ropes, like polypropylene, are designed to float, which makes them better for rescue ropes or fishing nets.

Example: If you need a rope that stays on the water’s surface, nylon is not the best choice. Instead, you should use polypropylene rope.

5. Nylon Rope Stays Strong in Different Weather Conditions

Nylon rope is resistant to sun, rain, and extreme temperatures, making it a good choice for outdoor activities.
It is stronger than polyester and natural fiber ropes, even when wet.
It does not rot, mildew, or break down easily, unlike ropes made of cotton or manila.

Example: If you leave a nylon rope outside in the rain and sun, it will last much longer than a natural fiber rope.

How Does Water Affect Nylon Rope?

Nylon rope is strong, flexible, and durable, which makes it useful for boating, fishing, camping, and many outdoor activities. However, when nylon rope gets wet, it behaves differently than when it is dry. Water can change its weight, strength, and flexibility, so it is important to understand how nylon rope reacts to water before using it.

Let’s take a closer look at how water affects nylon rope.

1. Nylon Rope Absorbs Water

Nylon rope is made from synthetic fibers, but unlike some other synthetic ropes, it absorbs water.
When placed in water, nylon rope soaks up moisture, which makes it heavier and softer.
Some other ropes, like polypropylene, do not absorb water and stay dry even when submerged.

Example: If you drop a nylon rope into a lake, it will absorb water and sink. A polypropylene rope, on the other hand, will float because it does not absorb water.

2. Nylon Rope Becomes Heavier When Wet

Because nylon rope absorbs water, it becomes heavier than when it is dry.
This can make it harder to carry and handle if it has been soaking in water for a long time.
After drying, the rope returns to its normal weight.

Example: If you use nylon rope to tie down a boat, it may feel light at first but become heavier after a rainstorm.

3. Wet Nylon Rope Loses Some Strength

When nylon rope gets wet, it can lose about 10–20% of its strength.
Water affects the fibers inside the rope, making them less rigid and more flexible.
The rope regains its full strength once it dries.

Example: If you are using nylon rope to lift a heavy object, you should know that it is not as strong when wet as it is when dry.

4. Wet Nylon Rope Stretches More

Nylon is already a stretchy rope, but when it gets wet, it stretches even more.
This can be useful for absorbing shock, such as tying a boat to a dock, where movement is expected.
However, if you need a rope that stays firm and does not stretch, nylon may not be the best choice when wet.

Example: If you use nylon rope for towing, be aware that it will stretch more when wet, which could affect how well it pulls a load.

5. Nylon Rope Takes Time to Dry

Because nylon rope absorbs water, it takes longer to dry than water-resistant ropes like polyester or polypropylene.
If stored in a wet place, it may stay damp for a long time.
However, unlike natural fiber ropes like cotton or manila, nylon does not rot or grow mold from being wet.

Example: If you use nylon rope while camping in the rain, make sure to hang it up to dry properly so it does not stay damp for too long.

6. Nylon Rope Sinks in Water

Since nylon rope absorbs water, it does not float like some other synthetic ropes.
If you need a floating rope, polypropylene is a better choice.
However, the fact that nylon rope sinks can be useful for anchoring boats or underwater applications.

Example: If you need a lifeline for a swimmer, nylon is not the best choice because it will not float on the water’s surface. Instead, you should use polypropylene rope.

Best Uses for Nylon Rope in Water

Nylon rope is a strong and durable rope that can be used in many different ways. It works well in water, but because it absorbs water, becomes heavier, and stretches when wet, it is better suited for some activities than others.

Here are the best ways to use nylon rope in water and why it is a good choice for these tasks.

1. Boating and Dock Lines

Nylon rope is one of the best choices for tying boats because it is strong and slightly stretchy.
The stretch helps absorb the force of waves and movement, preventing damage to the boat or dock.
Even though nylon absorbs water and sinks, it remains strong and reliable.

Why It Works Well:

Absorbs shock from waves.
Strong enough to hold boats in place.
Does not rot or break down in water.

2. Anchoring and Mooring

Nylon rope is commonly used for anchor lines because it is strong, flexible, and resists wear.
It sinks in water, which helps keep the anchor in place.
The stretch in nylon rope makes it useful for mooring, where boats need to be secured but still able to move slightly.

Why It Works Well:

Stretches to absorb force when anchoring.
Strong enough to hold heavy loads.
Resistant to sun, salt, and rough conditions.

3. Fishing and Crab Traps

Nylon rope is sometimes used for fishing nets, crab traps, and underwater lines because it is strong and does not rot.
However, since nylon rope sinks, it is not ideal for floating fishing lines.
Many fishers prefer polypropylene rope because it floats and does not absorb water.

Why It Works Well:

Does not break down in saltwater.
Strong enough to handle heavy fish traps.
Lasts longer than natural fiber ropes.

4. Rescue and Safety Lines

Nylon rope is sometimes used for water rescue because it is strong and durable.
However, since it sinks, it is not the best choice for floating lifelines.
If you need a rope for lifesaving or throwing to a swimmer, polypropylene is a better choice because it floats.

Why It Works Well:

Strong enough for pulling and towing.
Does not rot or weaken when wet.
Stretches to absorb sudden force.

5. Outdoor and Camping Use in Wet Conditions

Nylon rope is great for tying gear, securing tarps, and making shelters in rainy or wet environments.
Even when wet, it stays strong and does not weaken like cotton or manila rope.
It does take time to dry, but it does not rot.

Why It Works Well:

Strong and flexible for tying things down.
Does not rot like natural fiber ropes.
Works well even after getting wet.

Alternative Ropes for Water Use

Nylon rope is strong and useful in water, but it absorbs water, becomes heavier, and stretches when wet. Sometimes, a different type of rope might be a better choice, depending on how you plan to use it.

There are several types of water-friendly ropes, each with different strengths and weaknesses. Below, we will explore some of the best alternative ropes for water use, how they compare to nylon rope, and when they might be a better choice.

1. Polypropylene Rope – Best for Floating on Water

What Is It?

Polypropylene rope is a lightweight, synthetic rope that is best known for its ability to float on water. It is often used for water rescue lines, fishing nets, and pool ropes.

How It Compares to Nylon Rope:

Feature	Nylon Rope	Polypropylene Rope
Water Absorption	Absorbs water	Does not absorb water
Floating	Sinks	Floats on water
Strength	Stronger	Weaker than nylon
Stretching	Stretches	Less stretchy
Best For	Heavy loads, shock absorption	Water rescue, floating safety lines

Best Uses for Polypropylene Rope:

Water rescue and lifelines – It floats, so it can be thrown to someone in distress.
Fishing and marine ropes – Used for fishing nets and securing boats.
Swimming pool ropes – Helps divide lanes or mark safety areas.

2. Polyester Rope – Best for Strength and Water Resistance

What Is It?

Polyester rope is another strong synthetic rope that is very similar to nylon, but it does not absorb water and has less stretch.

How It Compares to Nylon Rope:

Feature	Nylon Rope	Polyester Rope
Water Absorption	Absorbs water	Does not absorb water
Strength When Wet	Weaker when wet	Stays strong when wet
Stretching	More stretch	Less stretch
UV Resistance	Good	Excellent
Best For	Shock absorption, flexibility	Stability, marine rigging

Best Uses for Polyester Rope:

Sailing and marine rigging – Great for securing sails and tying boats.
Outdoor activities – Works well for hammocks, pulleys, and climbing gear.
Mooring lines – Good for tying boats because it resists sun and water damage.

3. Kevlar Rope – Best for Extreme Strength and Durability

What Is It?

Kevlar rope is made from super-strong synthetic fibers that are known for their high strength and resistance to wear. It is often used for rescue work, towing, and industrial applications.

How It Compares to Nylon Rope:

Feature	Nylon Rope	Kevlar Rope
Water Absorption	Absorbs water	Does not absorb water
Strength	Strong	Extremely strong
Stretching	Stretches	Does not stretch
UV and Chemical Resistance	Good	Excellent
Best For	Flexibility, shock absorption	Heavy loads, extreme durability

Best Uses for Kevlar Rope:

Rescue and safety applications – Used in search-and-rescue and towing.
Industrial and military use – Great for heavy lifting and high-pressure tasks.
Long-distance anchor lines – Strong enough to hold large loads in place.

4. Manila Rope – Best for Natural Strength and Grip

What Is It?

Manila rope is a natural fiber rope made from the abaca plant. It has been used for centuries in boating, farming, and outdoor work.

How It Compares to Nylon Rope:

Feature	Nylon Rope	Manila Rope
Water Absorption	Absorbs water	Absorbs water
Rot Resistance	Does not rot	Can rot if not dried properly
Strength	Strong	Strong but weaker than nylon
Flexibility	Flexible	Stiff and rough
Best For	Industrial, marine, heavy loads	Outdoor, decorative, climbing

Best Uses for Manila Rope:

Boating and marine use – Used for rigging and dock lines.
Decorative and landscaping projects – Good for outdoor barriers and swings.
Exercise and climbing ropes – Provides a strong grip for training.

5. Cotton Rope – Best for Softness and Lightweight Use

What Is It?

Cotton rope is a soft, natural fiber rope that is commonly used for crafts, pet toys, and indoor projects.

How It Compares to Nylon Rope:

Feature	Nylon Rope	Cotton Rope
Water Absorption	Absorbs water	Absorbs a lot of water
Strength	Very strong	Weaker
Rot Resistance	Does not rot	Can rot if wet for too long
Texture	Smooth, slightly slippery	Soft and gentle
Best For	Heavy-duty, industrial use	Crafts, pet toys, soft handling

Best Uses for Cotton Rope:

Pet and animal use – Safe for dog toys and horse leads.
Arts and crafts – Used for macramé, decorative knots, and DIY projects.
Indoor home use – Good for curtain ties, baskets, and furniture.

Conclusion

Can Nylon Rope Go in the Water?Yes, nylon rope can go in the water, but it behaves differently when wet. It is strong, flexible, and resistant to rot, making it a popular choice for boating, fishing, and outdoor activities. However, because nylon absorbs water, it becomes heavier, stretches more, and loses some strength when wet.

For tasks like boat dock lines, anchor ropes, and mooring, nylon is an excellent choice because its stretch helps absorb shock. However, if you need a rope that floats or does not absorb water, alternatives like polypropylene or polyester might be better.

When choosing a rope for water use, consider how water absorption, strength, weight, and floating ability will affect performance. If you need a durable, water-resistant rope that remains strong in wet conditions, nylon is a reliable option—but it is important to use it for the right applications.

Can Nylon Rope Go in the Water?