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The Role of Gangways, Bollards, and Fenders in Floating Structures

Author : admin
Date : 31.07.25

Floating infrastructure — whether it’s for tourism, transport, or industrial use — is more than just pontoons and platforms. To function safely and efficiently, these structures depend on a set of key accessories that enhance usability, protect against wear, and ensure safe movement of people and vessels.

Among the most critical accessories in any floating system are gangways, bollards, and fenders.

In this blog, we’ll break down their individual roles, types, and why they’re considered essential components of any robust floating infrastructure project.

1. Gangways: Connecting Land to Water

What Are Gangways?

Gangways are bridge-like structures that provide safe, walkable access between the floating platform and the shore. They are typically hinged or flexible to accommodate tidal or seasonal water level changes.

Role in Floating Infrastructure:

  • Accessibility: Enables smooth transition between shore and floating structure
  • Safety: Provides handrails, anti-slip surfaces, and gentle slope for public use
  • Flexibility: Designed to adjust with water level fluctuations

Types of Gangways:

  • Fixed Gangways (for low fluctuation areas)
  • Articulated/Hinged Gangways (adjustable for water level changes)
  • Aluminium or FRP Modular Gangways (lightweight and corrosion-resistant)

Applications:

  • Public floating jetties
  • Marina walkways
  • Floating solar O&M access bridges
  • Tourist boat access platforms

✅ Why It Matters:

Without a well-designed gangway, floating systems are difficult to access, especially for elderly users, maintenance teams, or during emergency situations.

2. Bollards: Securing the Vessel

What Are Bollards?

Bollards are short vertical posts installed on floating structures or nearby land, used to tie or moor boats and vessels securely in place.

Role in Floating Infrastructure:

  • Mooring Support: Allows safe and strong tying of vessels
  • Stability: Prevents drifting or damage during docking
  • Load Transfer: Takes the load stress from vessel movement

Types of Bollards:

  • Boat Bollards
  • Single Bitt Bollards
  • Double Bitt Bollards
  • Cross Bit Bollards
  • T-head Bollards
  • Cleats (for smaller boats)

Materials:

  • Galvanized steel
  • Cast iron
  • Stainless steel (for marine-grade durability)

Applications:

  • Passenger jetties
  • Fishing docks
  • Water taxi and ferry terminals
  • Floating work platforms

✅ Why It Matters:

Improper mooring can lead to structural damage, collisions, or even safety hazards for passengers. Bollards ensure that boats stay docked even in rough water.

3. Fenders: Protecting Against Impact

What Are Fenders?

Fenders are cushioning devices installed along the edge of floating platforms or docks to absorb the impact from boats during berthing or accidental contact.

Role in Floating Infrastructure:

  • Impact Absorption: Protects both vessel and dock from damage
  • Shock Mitigation: Reduces strain on mooring points
  • Durability: Extends the lifespan of floating assets

Types of Fenders:

  • Rubber D-type Fenders (common for jetty sides)
  • Cylindrical/Donut Fenders
  • Foam-Filled Marine Fenders
  • Corner Fenders (for sharp turns or tight spaces)

Applications:

  • Public and private marinas
  • Industrial floating docks
  • Inland waterway cargo terminals
  • River cruise docking points

✅ Why It Matters:

A well-fendered floating structure can handle frequent vessel traffic without sustaining long-term damage — critical for busy terminals and tourism jetties.

Conclusion

Floating infrastructure is only as strong as its weakest component. While pontoons and platforms may grab the spotlight, it’s the supporting accessories — gangways, bollards, and fenders — that quietly do the heavy lifting in the background.

At AIPL, we specialize in designing and installing complete floating systems — including all critical accessories — tailored to your project’s specific waterbody and usage needs.

FAQs

1. What is AIPL’s Acquaworks – Construction Pontoon Series?

Acquaworks is a modular heavy-duty pontoon system designed to convert any waterbody into a safe, stable, and high-performance worksite for cranes, excavators, dredgers, and piling rigs.

2. What makes Acquaworks suitable for heavy-duty marine construction?

It features reinforced interlocking decks, spud wells, winch anchoring, non-slip surfaces, guardrails, and safe crew access.

3. What types of construction operations can be performed?

- Acquaworks Lift – Crane Operations

- Acquaworks Dig/Dredge – Excavation & Dredging

- Acquaworks Pile/Drill – Piling & Drilling

4. What are the typical platform dimensions of  AIPL’s construction pontoons?

Length: 18–30 m, Width: 9–15 m, Depth: 1.2–1.8 m

5. What is the deck load capacity of AIPL’s construction pontoons?

6–8 t/m² across all models.

6. What machine loads can be sustained by  AIPL’s construction pontoons?

- Lift: up to 60 tons

- Dig/Dredge: up to 45 tons

- Pile/Drill: up to 50 tons

7. Are spud systems available at  AIPL’s construction pontoons?

Yes, spud wells/spud-assisted systems are available in all models.

8. What accessories can be integrated in  AIPL’s construction pontoons?

Bollards, winches, guardrails, fenders, gensets, fire extinguishers, propulsion units.

9. What is Acquaworks Lift used for?

Heavy-duty floating crane operations with reinforced deck grillage and wear plates.

10. How does Acquaworks Lift ensure safety?

By using spud anchoring, wear plates, wide access zones, and predictable radius management.

11. What is Acquaworks Dig/Dredge used for?

Water-based excavation and dredging using excavators, suction heads, and slurry pumps.

12. Does Dig/Dredge support environmental compliance?

Yes, it supports silt curtains and debris screens.

13. What is Acquaworks Pile/Drill used for?

Marine piling and drilling with vibro hammers, impact hammers, and rotary rigs.

14. How does Pile/Drill maintain alignment?

Through integrated reaction points, tie-downs, and guide posts.

15. Is Acquaworks easy to transport and install?

Yes, it is modular, transport-friendly, and quick to reconfigure.

16. How is crew safety ensured?

Non-slip decks, guardrails, wide access zones, and organized utilities.

17. Can pontoons be reconfigured?

Yes, they can be adapted for lifting, dredging, or piling operations.

18. What makes Acquaworks better than traditional barges?

Modularity, predictable stability, quick assembly, better safety, and integrated utilities.

19. How is deck organization maintained?

Through integrated trays, clamps, and dedicated utility routes.

20. Can propulsion be added?

Yes, propulsion units can be integrated for maneuvering.

About the Author

Mr. Ankit Patel, Director & CEO

  • Industrial expertise in Business Development, Operations, Finance & Administration, and Product development.
  • Navkriti Medal issued by the Indian Institute of Technology (BHU), Varanasi.
  • National Meritorious Innovation Award 2018 by NRDC (A DST Enterprise) presented during the Innovate India conference 2019 at EDII, Ahmedabad.
  • Recognised for groundbreaking innovation with patent no. 485553 in the Marine Industry

AIPL specializes in modular maritime and floating-infrastructure platforms for energy, water, marine, transport, construction, pumping and tourism sectors, supported by a decade of proven engineering.

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