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Overhead travelling telescopic rescue boat davit, SWL 1t (Technical supply specification)


1. General Information (Operating Conditions)

The overhead travelling rescue boat davit is designed for reliable operation in marine environments under the following conditions:

  • Ambient air temperature: -30°C to +40°C
  • Relative humidity: max. 65% at +30°C; max. 85% at -30°C
  • Sea water temperature: max. +32°C, min. -2°C
  • Continuous vessel heel (either port or starboard): up to 10°
  • Continuous vessel trim (by bow or stern): up to 5°
  • Wind pressure: max. 400 Pa
  • Shipboard vibration
  • Periodic sea water splashing of components

Operating conditions in stowed position:

  • Ambient air temperature: -35°C to +45°C
  • Wind pressure: max. 2000 Pa
  • Shipboard vibration

2. Purpose

The equipment is intended for the launch and recovery of the rescue boat.

Overhead travelling telescopic rescue boat davit, SWL 1t – side view general arrangement drawing
Overhead travelling telescopic rescue boat davit, SWL 1t – side view general arrangement drawing

About

Marine Safety: The Unsung Heroes of the Deck

Modern vessels are equipped with numerous systems that remain virtually invisible to passengers but ensure the safety of crew and guests. Among these solutions, the overhead travelling rescue boat davit holds a prominent place. It enables efficient launch and recovery operations, ensuring rapid response to any changing situation at sea.

Robust Design and Reliability

Modern launch and recovery systems feature advanced mechanics and high durability. The overhead davit with a rescue boat is engineered to operate under wind loads, vessel motions, and volatile weather conditions. Its design minimizes routine maintenance, providing a dependable asset on deck.

Evolution of Recovery Systems

Historically, boat launching was performed manually, requiring significant effort and time. The introduction of telescopic overhead davit has reduced crew workload, accelerated the process, and enhanced safety. Today, such systems are standard equipment for modern cruise, training, and commercial fishing vessels.

Advantages of Overhead Travelling Davit

Compact design and versatility make the overhead travelling davit a preferred solution for any vessel. It integrates seamlessly onto the deck, ensures controlled launching of a fully loaded boat, and allows for convenient single-operator control. These features make it an essential safety component onboard.

An Experienced Russian Manufacturer

Izhora Hydrosystems manufactures a wide range of overhead travelling davit, combining proven engineering solutions with modern technologies. This equipment maintains high reliability even in extreme marine environments and complies with the requirements of the Russian Maritime Register of Shipping (RMRS), making it the definitive choice for Russian shipbuilders.

The Future of Marine Safety

Technological advancements drive continuous improvement in launch and recovery systems, enhancing the efficiency and safety of marine operations. The application of innovative materials and advanced mechanisms makes the overhead davit with a rescue boat increasingly user-friendly and straightforward to operate, ensuring the confidence of crew and passengers even under the most challenging conditions.


3. Scope of Supply

3.1 Overhead Travelling Telescopic Rescue Boat Davit, SWL 1t

3.1.1 System Components

ComponentQuantity
Telescopic davit1
Bow boom1
Hydraulic equipment (hydraulic power unit, control valves, etc.)1
Control cabinet with integrated control panel1
Fixed control station for rescue boat davit1
Portable control pendant for rescue boat davit1
Spare parts, tools, and accessories (STAs)1
Cable set (excluding external connection cables)1

3.1.2 Key Parameters

ParameterValue
Davit typeTelescopic
Rescue boat davit capacity10 kN
Maximum outreach1.75 m
Lowering height15 m
Lowering speed0.3 m/s (18 m/min)
Installed power18.5 kW
Hydraulic fluidAUP TU 38.1011258-8

3.1.3 Spare Parts, Tools, and Accessories (STAs)

Manufacturer’s standard set for two years of operation.

3.1.4 Documentation

DocumentQuantity
Technical passport1
Installation and operating manual1
Onboard testing program and procedure1
Factory acceptance test (FAT) report1

3.1.5 Certificates

RMRS Certificate (RS Product Certificate) as per Form 6.5.30 – 1.

Overhead travelling telescopic rescue boat davit, SWL 1t – top view general arrangement drawing
Overhead travelling telescopic rescue boat davit, SWL 1t – top view general arrangement drawing

3.3 Combined Rescue Boat (6-Person Capacity)

3.3.1 System Components

ComponentQuantity
Combined rescue boat assembly1 pc.
All-welded aluminum hull1 set
5-compartment inflatable PVC collar1 set
24L fuel tank2 pcs.
Outboard motor1 pc.
Bench3 pcs.
Exterior lifeline2 sets
Painter, length 30 m, with painter release hook1 pc.
Buoyant towing line, length 50 m1 pc.
Sea anchor with tripping line and hawser1 pc.
Compass with luminous card and mounting bracket1 pc.
Foot pump with connection hose1 pc.
Synthetic sling with shackle1 set
Position-indicating light1 pc.
Buoyant oar2 pcs.
Boat hook (safety type)1 pc.
Buoyant bailer1 pc.
Bucket1 pc.
Buoyant knife (safety type)1 pc.
Sponge2 pcs.
Buoyant rescue quoit with 30 m buoyant line2 pcs.
Electric torch with spare batteries and bulb1 pc.
Whistle1 pc.
First-aid kit in waterproof case1 pc.
FOS-3 searchlight1 pc.
Thermal protective aid (TPA)2 pcs.
Radar reflector1 pc.
Fire extinguisher1 pc.
Waterproof gear bag1 pc.
PVC collar repair kit in case1 pc.
Retro-reflective tapes for collar5 pcs.
Outboard motor spare parts, tools, and accessories (STAs)1 set
Deck cradles1 set
Tie-down strap (lashing for securing the boat to davit)2 pcs.
Deck lashing strap3 pcs.
Boat mooring cover1 pc.
Portable searchlight with battery pack and charger1 set
Battery 6V 9Ah1 pc.
220V battery charger1 pc.

3.3.2 Key Parameters

ParameterValue
Length4.1 m
Width1.8 m
Collar diameter0.4 m
Collar materialPVC
Number of inflatable compartments5
Passenger capacity5 seated + 1 on stretcher
Engine typeOutboard, gasoline
Engine power18.4 kW
Fuel capacity50 l
Light vehicle weight (empty boat)295 kg
Boat weight with engine supplies419 kg
Total launch weight (fully loaded)920 kg
Speed (fully loaded)6 knots
Towing force1.6 kN
Electromagnetic compatibilityAccording to RMRS rules

3.3.3  Spare Parts, Tools, and Accessories (STAs)

Manufacturer’s standard set for one year of operation.

3.3.4 Documentation

DocumentQuantity
Technical passport1
Installation and operating manual1
STA list1

3.3.5 Certificates

RMRS Certificate (RS Product Certificate) as per Form 6.5.30 – 1.

The davit and boats are supplied with RMRS certificates (Form 6.5.30), as well as an extract from the register of Russian industrial products in accordance with the requirements of the Decree of the Government of the Russian Federation No. 719 “On Confirmation of Production”.


4. Additional Requirements

  • The vessel is designed and constructed to the class of the Russian Maritime Register of Shipping (hereinafter referred to as RS): KM ⍟ ICE2 (hull) RN (SCI) AUT-3 EPP Battery system Passenger ship.
  • Flag during construction: Russian Federation.
  • Classification society: Russian Maritime Register of Shipping.
  • The overhead davit with a rescue boat remains fully operational under the conditions specified in item 2.3.1 of Part VII “Machinery Installations” of the Rules for the Classification and Construction of Sea-Going Ships of the Russian Maritime Register of Shipping.
  • The reliability of the applied equipment and the vessel’s maintenance system are ensured by a set of spare parts in volumes complying with RS requirements and the Equipment Supplier’s recommendations.
  • Equipment service life: minimum 25 years.
  • The scope of supply includes:
    • Equipment
    • Special tools required for installation and maintenance
    • Instrumentation and gauges
    • Mating connections, counter-flanges, fasteners, cable glands, and grounding bolts (as applicable)
    • Flexible connections (for shock-mounted equipment)
  • The scope of supply and equipment composition may be refined based on the supplier’s recommendations.
  • Instruction plates, warning signs and labels, mimic diagrams, etc., are in Russian.
  • The overhead davit with a rescue boat is offered with the manufacturer’s standard coating; however, the coating system must be approved by the shipyard.
  • Preservative coatings ensure an indoor shelf life of 12–18 months.
  • The overhead davit with a rescue boat is supplied with the following operational documentation:
    • List of supplied documentation in .doc and .pdf formats
    • Technical description
    • Storage and installation instructions, including:
      • System schematic diagrams
      • Schematic electrical diagrams, connection, and wiring diagrams indicating electrical equipment characteristics and cable gland diameters
      • External connection diagrams
      • Equipment drawings with weights, dimensions, installation, and interface dimensions
      • Equipment operating manual
      • Watchstanding instructions
      • STA list
      • Instrumentation and gauge list
  • The requirement to perform installation supervision (supervision of installation) and engage the Supplier’s specialists for servicing is determined during contract negotiation.
  • The engine of each rescue boat is equipped with a heating cover.
  • Electromagnetic compatibility with other shipboard equipment complies with RMRS rules.
  • The equipment is supplied complete with all necessary fasteners.
  • The equipment operates stably under high vibration, as well as under vessel trim and heel conditions according to RMRS rules.
  • The davit features an enclosed steel structure.
  • The davit is supplied with a hydraulic power unit.
  • The equipment complies with the “General Regulations for Technical Supervision” of the Rules of the Russian Maritime Register of Shipping (RS) and is supplied with a Type Approval Certificate confirming its suitability for the vessel.
  • The davit ensures the safe launching of a fully equipped rescue boat under adverse conditions of trim up to 5° (by bow or stern) and heel up to 10° (either port or starboard) after boarding of the full complement of persons.
  • Launching of the fully loaded and equipped (as well as empty) rescue boat handled by the system is ensured by gravity or stored mechanical power independent of shipboard power sources.
  • The launching appliance design requires minimal routine maintenance. All parts requiring regular maintenance by the vessel’s crew are easily accessible and straightforward to service.
  • The davit ensures controlled launching of the fully loaded boat.
  • All blocks and sheaves are made of galvanized or stainless steel. Boat tackles and lashings consist of galvanized steel wire rope. Axles and shafts are manufactured from stainless steel with bronze bearings. Grease nipples are provided on all bearings and positioned in easily accessible locations. Remote brake control cables are made of stainless steel.
  • All electrical equipment is provided with external grounding bolts and cable glands.
  • The equipment is supplied complete with all necessary fasteners (bolts, nuts, washers, etc.).
  • The davit is equipped with a heating system.
  • The launching mechanism is operated by a single person from either the vessel’s deck or from within the rescue boat. The operator on deck maintains a clear line of sight to the rescue boat during the launching sequence.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the date of shipment, unless otherwise provided by the contract.


Contacts

Phone: +7 (812) 339-61-68

Email: contact@i-hydro.tech