Types of Rescue Boat Davits

Types of Rescue Boat Davits and Their Technical Characteristics

Rescue Boat Davits are designed in accordance with SOLAS, IMO LSA Code, and Classification Society Rules to ensure safe and rapid launching and recovery of rescue boats. Depending on vessel type, deck layout, and operational requirements, several davit types are commonly used.

1. Single Arm Rescue Boat Davit

The most commonly used rescue boat davit type.

Technical Characteristics:

• Safe Working Load (SWL): 1.5 – 5 tons

• Design: Single arm slewing structure

• Operation: Hydraulic or electric

• Rotation: Slewing outward from deck edge

• Compliance: SOLAS, LSA Code, Class Rules

Advantages:

• Compact and lightweight design

• Easy installation and maintenance

• Ideal for Fast Rescue Boats (FRB)

2. A-Frame Rescue Boat Davit

Designed for heavy-duty and offshore operations.

Technical Characteristics:

• SWL: 3 – 10 tons

• Structure: A-frame double-arm configuration

• Operation: Hydraulic power unit

• Capability: Operation in rough sea conditions (within design limits)

• Compliance: SOLAS, Offshore Class Rules

Advantages:

• High stability under dynamic loads

• Excellent performance in harsh environments

• Suitable for offshore vessels and platforms

3. Slewing Type Rescue Boat Davit

Mounted on a rotating pedestal for controlled and precise handling.

Technical Characteristics:

• SWL: 2 – 6 tons

• Slewing Angle: Typically 90° – 110°

• Operation: Hydraulic or electric

• Control: Local control panel and optional remote control

Advantages:

• Accurate positioning during launch and recovery

• Flexible deck arrangement

• Smooth and controlled operation

4. Telescopic Rescue Boat Davit

Developed for vessels with limited deck space.

Technical Characteristics:

• SWL: 1.5 – 4 tons

• Boom Type: Telescopic

• Operation: Hydraulic cylinder system

• Design: Compact footprint when stowed

Advantages:

• Space-saving solution

• Modern and lightweight construction

• Commonly used on passenger vessels

5. Fast Rescue Boat (FRB) Davit

Specifically designed for high-speed rescue boats.

Technical Characteristics:

• SWL: 3 – 7 tons

• Boat Speed Compatibility: 20 – 40 knots

• Operation: Hydraulic, high-response system

• Special Features: Launch and recovery while vessel is underway (subject to limits)

• Options: Constant tension winch, shock absorber

Advantages:

• Rapid response capability

• Ideal for man-overboard and SAR operations

• Widely used on offshore and cruise vessels

6. Gravity / Luffing Rescue Boat Davit

A simple and mechanically reliable system.

Technical Characteristics:

• SWL: 2 – 5 tons

• Operating Principle: Gravity-assisted lowering with brake control

• Operation: Mechanical with manual backup

• Maintenance: Minimal

Advantages:

• Can operate without external power

• High reliability in emergency situations

• Low maintenance requirement

Common Technical Features of All Rescue Boat Davits

• Standards:

  • SOLAS

  • IMO LSA Code

  • Classification Society Rules (DNV, ABS, LR, BV, etc.)

• Materials:

  • Marine-grade steel or aluminum

  • C5-M corrosion protection system

• Safety Systems:

  • Fail-safe braking system

  • Emergency lowering function

  • Overload protection