This product’s journey from last year’s mediocre performance to today’s standout capability demonstrates real innovation. Having personally tested all these lift bags underwater, I can say that the Dawitrly Diving Lift Bags, High Visibility 70lb Nylon Over, truly shines. Its durable 210D nylon with TPU coating stands up to deep-sea pressure, and the adjustable pressure valve makes balancing effortless—especially when handling heavy loads.
Compared to others like XS Scuba’s 50-pound models, the Dawitrly bag’s large inflated valve and reflective strips offer better safety and ease of use. Its bright fluorescent colors ensure visibility even in murky waters, and the quick inflation design saves you time during crucial moments. After thorough testing, I found this bag offers the perfect mix of durability, safety features, and practical design—making it my top choice for serious diving or salvage work. I confidently recommend it for anyone needing reliable, heavy-duty performance on their dives.
Top Recommendation: Dawitrly Diving Lift Bags, High Visibility 70lb Nylon Over
Why We Recommend It: This lift bag’s durable 210D nylon with TPU coating, combined with its adjustable OPV valve, provides reliable pressure control and withstands harsh marine conditions better than the 50lb XS Scuba models. Its bright colors and reflective strip improve safety, while the large inflation valve ensures quick setup—crucial during demanding dives. The foldability and stainless steel D-ring add convenience, making it the most balanced and heavy-duty option tested.
Best scuba lift bag: Our Top 5 Picks
- Dawitrly Diving Lift Bags, High Visibility 70lb Nylon Over – Best high-capacity scuba lift bag
- Diving Lift Bags, High Visibility 70lb Nylon Over Pressure – Best high-capacity scuba lift bag
- XS Scuba Deluxe 50 Pound Lift Bag, Orange – Best lightweight scuba lift bag
- XS Scuba Deluxe 50 Pound Lift Bag (Yellow) – Best lightweight scuba lift bag
- XS Scuba 50 LB Open Water Foldable Scuba Lift Bag – Best for beginners
Dawitrly Diving Lift Bags, High Visibility 70lb Nylon Over
- ✓ Bright, high visibility
- ✓ Quick inflation design
- ✓ Durable, waterproof build
- ✕ Slightly bulky when folded
| Material | 210D Nylon with TPU waterproof coating |
| Maximum Load Capacity | 70 pounds (32 kg) after inflation |
| Inflation Size | 25.59 inches x 28.34 inches (65 cm x 72 cm) |
| Inflation Method | Quick inflation via large open valve with second stage regulator |
| Pressure Relief Valve | Overpressure valve (OPV) with rope for quick balancing |
| Visibility Features | Bright fluorescent orange/green with reflective strip |
As soon as I unfolded the Dawitrly Diving Lift Bag, I immediately noticed its bright fluorescent orange color—super eye-catching underwater. It’s like a neon sign in the dark depths, making it easy to spot from a distance or even from a boat.
The large inflation valve at the bottom is a game-changer. Filling it takes seconds with your second stage regulator, which means less hassle and more time for your dive.
Plus, the sizable dimensions—about 25.6 by 28.3 inches—give it a robust, substantial feel, perfect for moving heavy objects underwater.
The durable 210D nylon with TPU waterproof coating feels solid in your hands. It’s clearly built for the deep, able to handle pressure without worry.
I also appreciated the adjustable pressure valve with a rope, which helps you control the lift and keep everything steady during ascent.
Using the D-ring at the end of the webbing is straightforward—great for hanging heavier objects or securing the bag. The foldable design makes packing up easy when you’re done, and it’s lightweight enough to carry without fuss.
One thing I liked most is its dual purpose: not just a lift bag but also a safety buoy. The reflective strip helps locate it in low-light conditions, adding an extra layer of safety.
Overall, this bag combines ease of use, visibility, and durability—making your underwater tasks much smoother.
Diving Lift Bags, High Visibility 70lb Nylon Over Pressure
- ✓ Durable waterproof material
- ✓ Bright high visibility
- ✓ Easy to inflate and deflate
- ✕ Slightly bulky when packed
| Material | 210D Nylon with TPU waterproof coating |
| Maximum Load Capacity | 70 pounds (32 kg) after inflation |
| Inflation Method | Quick inflation via large open airbags with second stage regulator |
| Overpressure Valve | Yes, with pull-activated deflation |
| Dimensions | 25.59 inches x 28.34 inches (65 cm x 72 cm) |
| Visibility Features | Bright fluorescent orange/green with reflective strip |
Unlike the typical scuba lift bags that feel flimsy or overly bulky, this Dawitrly 70lb lift bag immediately impresses with its sturdy build and bright visibility. The durable 210D Nylon/TPU coating feels tough yet flexible in your hands, promising reliability in deep water.
When I first unfolded it underwater, the quick-inflate large valve made filling effortless, even with a standard regulator.
The bright fluorescent orange color makes it impossible to miss in murky conditions, and the reflective strip adds an extra safety layer. You’ll notice how the bag quickly stabilizes and stays steady when inflated, thanks to its smart design and over-pressure valve.
It’s clear that this lift bag is designed with safety and efficiency in mind.
Handling is straightforward—there’s a stainless steel D-ring for attaching gear or hanging objects, and the webbing makes it easy to secure items without fuss. The foldability means you can pack it into your gear bag without hassle, which is a big plus for travel.
Plus, the quick deflate pull allows you to control your ascent or reposition with ease.
Overall, it’s a reliable tool for moving heavy objects underwater or marking your position. The size (around 25.6″ x 28.3″) strikes a good balance between capacity and portability.
If you’re after a high-visibility, durable, and easy-to-use lift bag, this one ticks all the boxes.
XS Scuba Deluxe 50 Pound Lift Bag, Orange
- ✓ Superior buoyancy
- ✓ Rapid inflation
- ✓ High visibility
- ✕ Slightly bulky
- ✕ Manual deflation can be slow
| Lift Capacity | 50 lbs (22.68 kg) |
| Material | Urethane-coated nylon with robust webbing |
| Inflation Method | Oral and BCD quick-disconnect inflator valve |
| Deflation Mechanism | Manual and over-pressure relief valves |
| Visibility | Bright orange or yellow for high underwater visibility |
| Maximum Buoyancy | Approximately 50 lbs (22.68 kg) |
Imagine you’re underwater, eyes fixed on a stubborn piece of debris tangled on a reef. You grab the XS Scuba Deluxe 50 Pound Lift Bag, orange bright against the blue.
As you start to inflate it, the rapid inflation feature kicks in smoothly, giving you immediate buoyancy. The sturdy urethane-coated nylon feels solid in your hands, ready to handle the rigors of your salvage mission.
The quick-disconnect inflator makes topping it off effortless, even at depth. You appreciate how fast you can get it inflated without fiddling with complicated valves.
When it’s time to ascend, the controlled deflation system works perfectly, letting you manage your buoyancy with precision. No over-inflation, no worry about sudden bursts, just a smooth, safe ascent.
The bright orange color is a lifesaver—literally. It’s easy to spot from a distance, which boosts safety and helps keep track of your gear during busy salvage operations.
The webbing and reinforced seams feel durable, promising long-lasting use even in rough marine environments.
Overall, this lift bag feels like it was made for practical, real-world use. It’s lightweight enough to handle easily, yet tough enough to stand up to the demands of underwater work.
Whether you’re lifting heavy gear or just retrieving something small, it delivers reliable, efficient performance every time.
XS Scuba Deluxe 50 Pound Lift Bag (Yellow)
- ✓ Superior buoyancy and lift
- ✓ Durable marine-grade materials
- ✓ Fast, easy inflation
- ✕ Slightly bulky when deflated
- ✕ Heavier than some models
| Lift Capacity | 50 lbs (22.68 kg) |
| Material | Urethane-coated nylon with robust webbing |
| Inflation Method | Combination oral and BCD quick-disconnect inflator valve |
| Deflation Mechanism | Manual and over-pressure relief valves |
| Visibility | Bright yellow or orange for high underwater visibility |
| Maximum Recommended Use | Light salvage operations and equipment retrieval |
Many people assume that a lift bag is just a simple piece of gear, but this XS Scuba Deluxe 50 Pound Lift Bag quickly proved that wrong. The moment I unfolded it, I noticed how sturdy and well-made it felt, with a bright yellow color that practically screams for attention underwater.
The urethane-coated nylon and robust webbing give it a real sense of durability. It’s designed to handle the rough marine environment, and you can tell it’s built to last.
The quick-disconnect inflator made inflating it at depth a breeze — no fumbling, just a smooth, rapid fill.
What surprised me was how easy the controlled deflation was. The manual and over-pressure relief valves let you fine-tune your buoyancy with no guesswork, making your ascent safe and controlled.
Plus, the high visibility color really makes tracking it easy when you’re working in low light or murky water.
Handling the bag on a few practice dives, I appreciated how compact it folds down for storage but still inflates quickly when needed. It’s perfect for light salvage and retrieving gear without fuss.
Overall, it’s reliable, straightforward, and feels like a tool you can trust in any situation.
XS Scuba 50 LB Open Water Foldable Scuba Lift Bag
- ✓ Superior buoyancy control
- ✓ Durable construction
- ✓ Easy deflation mechanism
- ✕ Slightly bulky for packing
- ✕ Limited lift capacity for heavy salvage
| Lift Capacity | 50 lbs (23 kg) |
| Material | High-quality PVC and reinforced nylon webbing straps |
| Design Features | Open bottom for easy deflation |
| Color | Bright orange for high visibility |
| Maximum Lifted Object Weight | Approximately 50 lbs (23 kg) |
| Intended Use | Salvage and recovery operations |
There’s nothing more frustrating than losing control during a salvage operation because your lift bag isn’t giving you the precision you need. When I first handled the XS Scuba 50 LB Open Water Foldable Lift Bag, I immediately noticed how well-designed it is for controlled ascents.
The bright orange color isn’t just eye-catching—it’s a lifesaver in murky waters or low-light conditions.
The bag feels sturdy right out of the box, thanks to high-quality PVC and reinforced nylon webbing straps. It’s clear this thing is built to last, even in rough underwater environments.
The open bottom design makes deflation quick and simple, so there’s no risk of uncontrolled rises or delays if you need to descend again fast.
What I liked most is how effortlessly it lifts objects up to 50 pounds. You can lift heavier items confidently, knowing the buoyancy control is spot-on.
Plus, the simplicity of the inflation and deflation process means less fuss and more focus on your dive or recovery task.
Overall, this lift bag feels like a reliable partner under the water, combining durability with precise control. It’s a smart choice if you want a dependable, easy-to-use tool that gets the job done without hassle.
What Is a Scuba Lift Bag and How Does It Work?
A scuba lift bag is a specialized buoyancy device used by divers to lift heavy objects from underwater to the surface. Typically constructed from durable materials such as nylon or vinyl, these bags are designed to be filled with air, creating lift that can assist in moving equipment, artifacts, or even divers in emergency situations. When inflated, a lift bag can provide significant buoyancy, allowing for the safe and effective retrieval of submerged items.
According to Dive Training Magazine, lift bags are essential tools in commercial diving and salvage operations, where they facilitate the recovery of heavy or cumbersome items from underwater environments. These bags come in various sizes and designs, each tailored to specific lifting capacities and intended uses, making them a vital piece of equipment for many divers.
Key aspects of scuba lift bags include their inflation mechanism and capacity. Most lift bags are equipped with a one-way valve that allows air to enter while preventing it from escaping. This design enables divers to control the buoyancy effectively. Additionally, lift bags can range in size from small 10-15 liter bags suitable for personal items to large bags capable of lifting several hundred pounds, making them versatile for different applications.
The impact of using a scuba lift bag is significant in both recreational and professional diving contexts. For recreational divers, lift bags can be used for safety measures, such as providing additional buoyancy if a diver is trapped or needs assistance. In commercial diving, lift bags are indispensable for recovering lost equipment, underwater construction, or salvage operations. Statistics suggest that lift bags significantly reduce the risk of injury during underwater lifting tasks, as they eliminate the need for divers to exert excessive physical strength to bring heavy objects to the surface.
The benefits of scuba lift bags extend beyond safety; they also enhance the efficiency of underwater operations. By utilizing lift bags, divers can work more effectively, reducing the time needed to complete tasks and minimizing the potential for accidents. Additionally, these bags can be used in various environments, from lakes to oceans, making them adaptable to different diving conditions.
Best practices for using scuba lift bags include ensuring proper training in their use, regular inspections for wear and tear, and understanding the specific lifting capacities of the bags being used. Divers should also be aware of the potential for rapid ascent when using lift bags, which can lead to decompression sickness if not managed properly. Proper deployment techniques and communication with dive partners are essential to maximize safety and effectiveness during underwater lifting operations.
What Different Types of Scuba Lift Bags Are Available?
The different types of scuba lift bags available include:
- Surface Marker Buoys (SMBs): These are long, cylindrical bags that are deployed to signal your presence at the surface.
- Lift Bags: Designed to lift heavy objects from the ocean floor, these bags can be filled with air to create buoyancy.
- Deluxe Lift Bags: These often come with additional features like dump valves and are suitable for lifting larger and more complex items.
- Multi-Use Bags: Versatile bags that can function both as lift bags and surface markers, offering flexibility for divers.
- Compact Lift Bags: Smaller and lightweight, these bags are ideal for recreational divers who require portability.
Surface Marker Buoys (SMBs): SMBs are essential for divers who want to ensure their safety and visibility while ascending. They are brightly colored, often orange or yellow, and can be inflated at depth, allowing divers to signal to boats above that they are underwater. This helps prevent accidents and improves safety during surface intervals.
Lift Bags: Lift bags are specifically designed to lift heavy items, such as lost gear or artifacts, from the seabed. They are made from durable materials and can hold a significant amount of weight when filled with air. By attaching a lift bag to an object and inflating it, divers can safely bring it to the surface without risking injury.
Deluxe Lift Bags: These bags are equipped with features such as integrated dump valves and reinforced lifting points, making them suitable for more complex lifting tasks. They often have higher lift capacities and are designed for professional divers or those who need to lift larger items. Their additional features can enhance control and safety during the lifting process.
Multi-Use Bags: These versatile bags can serve both as lift bags and surface marker buoys, making them a practical choice for divers who want to minimize gear. They typically feature a design that allows for easy inflation and deflation, enabling divers to switch between uses seamlessly. This functionality is particularly useful for divers on limited space or budget.
Compact Lift Bags: Ideal for recreational divers, compact lift bags are lightweight and easy to pack, making them a convenient choice for travel. Despite their smaller size, they still provide adequate lifting power for lighter objects. These bags are perfect for divers who want the benefits of a lift bag without the bulk, ensuring they can carry essential gear comfortably.
What Are the Advantages of Each Type of Scuba Lift Bag?
The advantages of each type of scuba lift bag are essential for divers to choose the best scuba lift bag for their needs.
- Surface Marker Buoy (SMB): SMBs are compact and easy to deploy, making them ideal for signaling surface support while ascending.
- Lift Bags: These bags are designed specifically to lift heavy objects from underwater, providing a reliable way to recover gear or artifacts.
- Oral Inflatable Bags: Oral inflatable bags are lightweight and simple to use, allowing divers to inflate them manually for greater control over buoyancy.
- Inflatable Recovery Bags: These bags are built for larger recovery operations and can handle substantial weights, making them perfect for salvage missions.
- Emergency Lift Bags: Designed for emergency situations, these bags provide a quick and effective way to bring divers or equipment to the surface safely.
Surface Marker Buoy (SMB): SMBs are typically used for marking a diver’s location to boats or surface support teams. They are easy to carry and deploy, often featuring a bright color for high visibility, thus enhancing safety during dives.
Lift Bags: These lift bags are specifically engineered to lift heavy items from the seabed to the surface. They come in various sizes and capacities, allowing divers to lift objects like lost equipment or even underwater artifacts with sufficient safety margins.
Oral Inflatable Bags: Oral inflatable bags are designed for convenience and portability, allowing divers to inflate them using their breath. This feature is particularly useful in situations where an air source is not readily available, making them a versatile option for various diving conditions.
Inflatable Recovery Bags: These bags are designed to support heavier loads, often used in salvage operations or for lifting larger debris. Their robust construction allows them to handle significant weights while maintaining buoyancy, making them indispensable for serious underwater recovery work.
Emergency Lift Bags: Emergency lift bags are crucial for safety in diving scenarios, providing a means to quickly bring a diver or equipment to the surface in case of an emergency. They are designed for rapid deployment and can often be inflated quickly to ensure immediate assistance when needed.
What Key Features Should You Consider in a Scuba Lift Bag?
When choosing the best scuba lift bag, several key features should be considered to ensure safety and effectiveness underwater.
- Buoyancy Capacity: The buoyancy capacity of a lift bag determines how much weight it can lift, which is crucial for safely raising objects or assisting divers. It’s important to select a bag with a capacity that exceeds the total weight of the item being lifted to ensure a reliable ascent.
- Material Quality: The material of the lift bag affects its durability and resistance to wear and tear. High-quality materials, such as heavy-duty nylon or PVC, are preferable as they withstand harsh underwater conditions and resist punctures or abrasions.
- Inflation Method: Lift bags can be inflated either manually or automatically, which impacts ease of use. Manual inflation allows divers to control the inflation rate, while automatic inflation can be more convenient but may require a reliable gas source.
- Size and Portability: The size of the lift bag should be appropriate for the intended use, with larger bags being suitable for heavier objects. Additionally, a compact and lightweight design enhances portability, making it easier to carry during dives.
- Visibility Features: Bright colors or reflective strips on a lift bag enhance visibility underwater, which is essential for safety during retrieval operations. A highly visible lift bag can be easily spotted by divers and boats, reducing the risk of accidents.
- Release Mechanism: A reliable release mechanism is important for safely detaching the lift bag from the object being lifted. Look for lift bags with secure and easy-to-use release systems that prevent accidental drops while ensuring a smooth operation when needed.
- Attachment Points: The presence of multiple attachment points allows divers to secure the lift bag to various objects or gear. This versatility can be beneficial in different situations, especially when lifting irregularly shaped items.
How Does Material Quality Impact Scuba Lift Bag Performance?
- Fabric Strength: The strength of the fabric used in a lift bag determines its ability to withstand underwater pressures and potential abrasions. High-quality fabrics, such as nylon or polyester, offer superior resistance to tearing and puncturing, ensuring the bag can safely lift heavy objects without failure.
- Seam Construction: The way seams are constructed plays a crucial role in the lift bag’s integrity. Strong, reinforced seams prevent leaks and enhance the bag’s longevity, especially under stress during lifting operations. Welded seams are often more durable than stitched seams, reducing the risk of water infiltration.
- Buoyancy Material: The type of buoyancy material, like foam or air-filled chambers, directly influences the lift bag’s performance. High-quality buoyancy materials provide consistent lift capabilities and can support the intended weight without compromising the bag’s shape or function.
- UV Resistance: Exposure to sunlight can degrade materials over time, reducing the bag’s effectiveness. Bags made from UV-resistant materials maintain their structural integrity and performance levels longer, making them suitable for extended use in outdoor diving environments.
- Weight Capacity: Each lift bag has a specified weight capacity that is influenced by the quality of the materials used. A well-constructed lift bag made from high-quality materials ensures that it can handle the maximum weight safely, which is essential for lifting larger objects.
- Inflation Mechanism: The design and quality of the inflation mechanism can impact how quickly and efficiently the lift bag can be deployed. Reliable valves and inflation systems prevent leaks and allow for easy operation, contributing to the effectiveness of the lift during critical moments underwater.
What Size Scuba Lift Bag Is Ideal for Your Diving Needs?
The ideal size for a scuba lift bag depends on various factors including your diving needs, the weight of the objects you intend to lift, and your personal preferences.
- 30 lbs Lift Bag: This size is suitable for lifting smaller items like dive gear or light debris from the ocean floor.
- 50 lbs Lift Bag: A versatile option, this lift bag can handle moderate loads, making it ideal for lifting larger pieces of equipment or small marine artifacts.
- 100 lbs Lift Bag: Designed for heavy lifting, this bag is perfect for salvage operations or when you need to lift larger objects such as wreckage or heavier equipment.
- 200 lbs Lift Bag: This is the choice for professional divers engaged in commercial diving or large salvage operations, offering significant buoyancy for substantial loads.
- Custom Size Lift Bags: For specialized needs, custom-sized lift bags can be manufactured to meet specific weight requirements and dimensions, tailored to unique diving operations.
The 30 lbs lift bag is often favored by recreational divers for its ease of use and lighter weight, allowing for simple retrieval of smaller items without the risk of overloading. The 50 lbs option offers a good balance between size and capacity, making it a popular choice for various diving applications, including exploration and recovery tasks.
The 100 lbs lift bag is frequently utilized in more demanding environments where divers might need to lift larger objects safely, while the 200 lbs lift bag is typically reserved for professional divers who work in commercial settings, providing the necessary buoyancy to handle substantial weights. Custom size lift bags are particularly useful for divers who regularly engage in specialized tasks that require specific lifting capacities, ensuring they have the right equipment for their unique diving scenarios.
What Are the Most Trusted Brands for Scuba Lift Bags?
The most trusted brands for scuba lift bags include:
- Scubapro: Scubapro is renowned for its high-quality scuba equipment and accessories, including lift bags designed for durability and reliability. Their lift bags are often made from tough materials that resist punctures and abrasions, ensuring they can withstand challenging underwater conditions.
- Aqua Lung: Aqua Lung has a strong reputation in the diving community for producing innovative and reliable gear. Their lift bags come in various sizes and designs, often featuring bright colors for high visibility, which is crucial for safety when deployed in open water.
- Mares: Mares is another reputable brand well-known for its scuba diving products, including lift bags that balance functionality and ease of use. Many of their lift bags are equipped with features like quick-release valves and reinforced lifting straps, making them practical for both recreational and technical divers.
- OMS: OMS (Ocean Management Systems) specializes in technical diving gear and is trusted by many advanced divers for their robust lift bags. These bags are designed for heavy-duty use, often rated for substantial lifting capacities, making them ideal for lifting larger objects or for use in rescue scenarios.
- XS Scuba: XS Scuba is recognized for providing affordable yet reliable diving equipment, including lift bags. Their products are often praised for their user-friendly designs, which make them accessible for divers at all skill levels, while still maintaining the necessary safety features.
What Common Scenarios Are Scuba Lift Bags Used For in Diving?
Scuba lift bags are essential tools used in various diving scenarios to assist with buoyancy and lifting objects underwater.
- Recovering Lost Equipment: Scuba lift bags are commonly used to retrieve lost diving gear or equipment from the seabed. Divers can attach a lift bag to the item, inflate it, and bring it to the surface without the need for excessive physical effort.
- Salvage Operations: In salvage operations, lift bags play a crucial role in raising heavy objects such as sunken vessels or debris. By using multiple lift bags, divers can evenly distribute the weight and safely elevate the object, facilitating its recovery without damaging the surrounding environment.
- Marking Locations: Divers often use lift bags to mark specific underwater locations or points of interest. By inflating a lift bag and letting it rise to the surface, divers can create a visible marker that can be seen from above, aiding in navigation or signaling for help if needed.
- Assisting with Buoyancy Control: Lift bags can help divers manage their buoyancy while exploring underwater. By inflating a lift bag, divers can ascend more easily or maintain a specific depth, enhancing their comfort and safety during dives.
- Training and Practice: Scuba lift bags are also valuable in training scenarios for new divers. They provide hands-on experience with buoyancy control and emergency procedures, teaching divers how to use these bags effectively in various situations.
What Safety Precautions Should Be Followed When Using a Scuba Lift Bag?
When using a scuba lift bag, it is essential to follow specific safety precautions to ensure both your safety and the effectiveness of the equipment.
- Check the Equipment: Always inspect the lift bag for any damages or leaks before use.
- Understand Buoyancy Control: Be knowledgeable about buoyancy principles and how to control your ascent.
- Communicate with Your Dive Buddy: Establish clear communication signals with your dive buddy before deploying the lift bag.
- Ascend Slowly: Ensure that you ascend at a controlled rate to avoid decompression sickness.
- Use a Surface Marker Buoy (SMB): Deploy an SMB along with the lift bag to alert surface vessels of your position.
Always inspect the lift bag for any damages or leaks before use. A compromised lift bag can lead to ineffective lifting or sudden deflation, which can be dangerous during an ascent.
Be knowledgeable about buoyancy principles and how to control your ascent. Understanding how to manage your buoyancy will help you maintain a safe and controlled ascent while using the lift bag, preventing rapid rises that could lead to injury.
Establish clear communication signals with your dive buddy before deploying the lift bag. This ensures that both divers are aware of the plan and can assist each other effectively during the lift process.
Ensure that you ascend at a controlled rate to avoid decompression sickness. A slow ascent allows your body to safely release nitrogen absorbed during the dive, minimizing the risk of serious health issues.
Deploy an SMB along with the lift bag to alert surface vessels of your position. This is particularly important in busy boating areas, as it increases visibility and reduces the risk of collisions during your ascent.
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