Marine Capstan Winches for Ship Mooring & Deck Operations | GT Winch Group

A capstan is a mechanical device characterized by a vertical rotating spindle or drum, designed to control the movement of ropes, cables, chains, or tape through applied rotational force. Its primary function is to provide mechanical advantage, enabling the management of heavy loads with reduced effort. Click here to visit our marine winches.

Vertical Capstan

Features Of Vertical Capstan produced by GT Winch Group

Vertical Drum Design—A vertical rotating drum allows efficient winding of ropes or chains, providing a mechanical advantage for tasks like anchor handling or mooring. This design is a hallmark of traditional capstans

Capstan vs. Windlass—Orientation: A capstan has a vertical axis, while a windlass (used for similar purposes) has a horizontal axis.Applications: Windlasses are typically dedicated to anchor handling, whereas capstans may handle varied tasks like mooring or cargo.

Q: Why choose a vertical capstan for marine applications?
A: Vertical capstans offer space efficiency, high torque, and safety compliance, making them ideal for modern vessels.

Q: How does the vertical capstan equation improve load control?
A: The formula $T_{hold} = T_{apply} \cdot e^{μ θ}$ ensures minimal input force can manage heavy loads via friction and rope wraps.

Q: Are vertical capstans suitable for offshore platforms?
A: Yes! Their corrosion resistance and adaptability make them perfect for offshore rigs, tugboats, and research vessels.

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Vertical Capstan Winch Machine

Electric Marine Capstan

Ship Capstan Winch Manufacturer

Stainless Steel Material Capstan Equipment

1.Superior Corrosion Resistance

Marine-Grade Material: Typically crafted from AISI 316/316L stainless steel , these capstans resist rust, saltwater, and chemical exposure.
Longevity: Ideal for offshore platforms, fishing vessels, and coastal installations where corrosion is a constant threat.

2. High Strength and Durability

Load Capacity: Stainless steel’s tensile strength supports heavy-duty operations, handling loads up to 20+ metric tons without deformation.
Impact Resistance: Withstands harsh weather, UV radiation, and physical abrasion, ensuring reliability in extreme conditions.

3. Low Maintenance Design

Easy Cleaning: Non-porous surface prevents dirt, algae, or salt buildup; simple rinsing maintains functionality.
No Coatings Needed: Unlike carbon steel, stainless steel eliminates the need for anti-rust paints or galvanization.

Q: Why choose stainless steel over aluminum for capstans?
A: Stainless steel offers higher strength and better corrosion resistance in saltwater, whereas aluminum is lighter but less durable.

Q: Are stainless steel capstans suitable for freshwater use?
A: Yes! They resist mineral deposits and algae growth, making them ideal for lakes, rivers, and reservoirs.

Q: Can stainless steel capstans be repaired if damaged?
A: Yes—welding and polishing can restore functionality and appearance.

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Stainless Steel Wrapping Head Marine Capstan

Stainless Steel Warping Marine Capstan

light duty boat capstan with steel wrapping head

anchor capstan for boats

Heavy-Duty Marine Capstan Technical Specifications

Category	Parameter
Application	Offshore anchoring, heavy mooring, salvage operations, oil rigs, large cargo vessels
Compliance Standards	SOLAS, ISO 9001/14001, DNV GL/ABS/Lloyd’s Register certifications.etc,customizable
Drum Orientation	Vertical-axis (standard) / Horizontal-axis (optional)
Drum Diameter	600–1200 mm
Rope/Chain Capacity	Rope: 50–150 mm diameter (synthetic/wire) Chain: 20–50 mm diameter (Grade G70)
Maximum Line Pull (Static)	50–200 metric tons (490–1960 kN)
Line Speed (Under Load)	5–20 m/min (variable speed control)
Gear Ratio	25:1 to 50:1 (planetary or helical gear systems)
Drive Type	Electric: 400–690V AC, 3-phase Hydraulic: 50–150 L/min flow, 250–350 bar Hybrid (electric + backup hydraulic)
Motor Power	Electric: 30–200 kW Hydraulic: 40–250 HP
Control System	IP68-rated remote control, PLC automation, touchscreen interface, emergency stop
Weight	500–8000 kg (depending on load capacity)
Mounting	Reinforced deck/platform mounting with seismic-grade bolts
Safety Features	Overload sensors, anti-reverse ratchet, fail-safe brakes, spark-proof design (ATEX compliance)
Operating Temperature	-40°C to +70°C (arctic to tropical conditions)
Ingress Protection (IP Rating)	IP69K (high-pressure/steam resistant)
Customization Options	Explosion-proof models, galvanized coatings, dual-drum configurations

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Other Optional Winch Accessories:

Customizable Solutions – Available in various load capacities, speeds, and configurations to meet specific industrial requirements.

High-Quality Manufacturing – Built with strict quality standards to ensure durability, reliability, and long service life.

Low Maintenance Requirements – Engineered for minimal maintenance, reducing downtime and operational costs.

General winches,marine winches,construction winches.etc available.Welcome to send a free inquiry.

Winch Rope Guide/Spooling Device

Winch Drum

Offshore Equipment

Please feel free to submit your inquiry using the form. We will reply in 8h.

OEM Supported

Email: info@gtwinch.com

Type of Winch-General Winch, Marine Winch, Mine Winch, or Other Type
Load Capacity-What is the maximum load (in tons or kilograms) the winch needs to handle?
Rope / Cable Type-What type of rope or cable will be used? (e.g., steel, synthetic)
Power Source-What type of power is required? (e.g., electric, hydraulic, pneumatic, manual)