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Jib-type davit for workboat, SWL 2.5t (Technical supply specification)


1. General Information (Operating Conditions)

The workboat davit operates reliably under the following maritime conditions:

  • Ambient air temperature: −35 °C to +45 °C
  • Relative humidity: up to 90%
  • Seawater temperature: max. +32 °C, min. −2 °C
  • Continuous vessel heel: up to 20° to either side
  • Continuous vessel trim: up to 10° by bow or stern
  • Wind pressure: max. 400 Pa
  • Hull-borne vibration
  • Periodic seawater splashing on components

Operating conditions in stowed position:

  • Ambient air temperature: −40 °C to +45 °C
  • Vessel heel: up to 20° to either side
  • Vessel trim: up to 10° by bow or stern
  • Wind pressure: max. 2000 Pa
  • Hull-borne vibration

2. Purpose

Launch and recovery of a high-speed workboat.

Workboat jib-type davit, 2.5 t capacity, side view outline drawing
Workboat jib-type davit, 2.5 t capacity, side view outline drawing

About

Reliable Assistance in Marine Operations

Modern marine operations require reliable equipment capable of operating in the most demanding conditions while ensuring personnel safety on board. The workboat davit provides efficient launch and recovery operations, even during adverse weather and heavy sea states. The system ensures operational stability and crew safety, which is critical for high-speed and rescue vessels.

Versatility of Application

The system is deployed on various types of marine vessels and offshore platforms for applications ranging from industrial operations to search and rescue (SAR) missions. It enables safe and rapid handling of high-speed workboats, ensuring precise maneuvering and ease of control. This versatility makes the equipment essential for operation in extreme environments where equipment reliability is paramount.

Advanced Control Technologies

Modern control systems ensure smooth and precise movements during launch and recovery operations. High-precision mechanisms minimize the risk of damage to the equipment and the vessel, while an intuitive interface allows the operator to control all processes under demanding operational conditions. The engineered design ensures safe and predictable handling, which is critical for time-critical operations or in restricted visibility.

Reliability from a Leading Manufacturer

Izhora Hydrosystems LLC designs and manufactures workboat davit utilizing advanced technologies and high-grade materials to ensure long equipment service life and stable performance under all operating conditions. The systems are engineered to withstand seawater exposure, wind pressure, hull-borne vibration, and extreme temperatures, ensuring reliability in severe marine environments. Deploying our equipment significantly increases marine operation efficiency and crew safety.

Adaptation to Severe Conditions

The workboat davit demonstrates high efficiency when operated across various climatic zones and severe marine environments. The system withstands continuous seawater exposure, high wind pressure, and hull-borne vibration, ensuring stable handling operations. This level of adaptation provides a versatile solution for offshore platforms, search and rescue (SAR) missions, and any application requiring highly reliable equipment.

Ease of Operation and Maintenance

The system is engineered for operational convenience and minimal maintenance requirements. All mechanisms are readily accessible for inspection, adjustment, and servicing, enabling the crew to perform rapid troubleshooting and maintain operational readiness. Simplified operation reduces the risk of operator error and ensures an extended equipment service life with reduced component replacement intervals.

Safety of Marine Operations

Deploying this system significantly enhances onboard safety levels. It mitigates human error by providing precise and predictable control during launch and recovery operations. This is critical when operating in severe sea states and in scenarios requiring rapid response to changing conditions. The reliability and operational safety make the equipment an indispensable component of modern marine operations.


3. Scope of Supply

3.1 Jib-type workboat davit, 2.5 t × 7 m

3.1.1 Component List

ComponentQuantity
Workboat davit assembly, comprising:
Pedestal1
Jib1
Winch1
Slewing drive1
Jib head block1
Deflector block1
Hydraulic power unit (HPU)1
Electrical installation1
Hydraulic installation1
Protective cover1
Slewing limiter1
Stopper1
Deck penetration1
Control valve block1
Valve block1
Foundation fasteners1 set
Workboat jib-type davit, 2.5t capacity, top view outline drawing
Workboat jib-type davit, 2.5t capacity, top view outline drawing

3.1.2 Main Technical Parameters

ParameterValue
Launch/recovery capacity2500 kgf
Jib outreach7 m
Recovery speed (winch motor)10 m/min
Launch speed (via winch or gravity/manual release during power loss)40 m/min
Maximum hoisting/lowering height20 m
Frame and jib materialSquare hollow section (SHS) Q345B
Slewing angle300°
Slewing speed1 rpm
Slewing mechanism(see documentation)
Power supply parameters / Enclosure class380 V, 50 Hz, IP56
Electric motor power11 kW
Heel / Trim20° / 10°
Davit weight4500 kg
Lubricant grades (oil/grease)TSp-10 GOST 23652-79; Litol-24 GOST 21150-87

3.1.3 SPTA Kit (Spare Parts, Tools, and Accessories)

Manufacturer standard for one-year operation: 1 set.

3.1.4 Documentation

Document TitleQuantity
Certificate / Passport1
Installation, commissioning, and adjustment instructions1
Operating manual1
Shipboard test program and procedure1
Factory acceptance test (FAT) protocol1
List of SPTA1

3.1.5 Certificates

RMRS Certificate (RS Certificate) Form 6.5.30: 1 copy.

3.2 High-speed workboat (10 persons)

3.2.1 Component List

ComponentQuantity
Workboat assembly, comprising:1 pc
Overall scope of supply of the workboat assembly1 pc
Hull and Structural Components
All-welded aluminum hull1 set
Control station1 set
A-frame/targa with self-righting bag (color: black)1 pc
Control station locker1 pc
Fender profile1 pc
Fuel tank1 pc
Propulsion Plant
Engine: inboard diesel (210 hp) with gearbox1 set
Engine monitoring instrument1 pc
Shaft line with fixed-pitch propeller1 set
Electrical Power Plant
12 V DC alternator, main engine driven2 pcs
12 V DC main switchboard (integrated control panel)1 pc
Vessel Systems, Outfitting and Equipment
Steering gear1 set
Central quick-release lifting hook1 set
Emergency Safety Equipment
Bucket1 pc
CO2 fire extinguisher (OU-2 type)1 pc
First aid kit in waterproof packaging1 pc
Inflatable lifejacket10 pcs
Red parachute flare6 pcs
Red hand flare4 pcs
Lifebuoy1 pc
Lifebuoy self-igniting light1 pc
Sea anchor1 pc
Thermal protective aid (TPA)10 pcs
Buoyant rescue ring with 30 m buoyant line2 pcs
20 m buoyant line2 pcs
Hand-held searchlight1 pc
Buoyant oar2 pcs
Boat hook, safety type1 pc
Buoyant bailer1 pc
Buoyant knife, safety type1 pc
Signal whistle1 pc
Dry bag for equipment storage1 pc
High-speed 10-person workboat, top view outline drawing and seating arrangement plan
High-speed 10-person workboat, top view outline drawing and seating arrangement plan

3.2.2 Main Technical Parameters

ParameterValue
Overall length ($L_{OA}$)6.25 m
Overall beam ($B_{OA}$)2.65 m
Overall height2.40 m
Hull draft0.65 m
Lightship displacement1.50 t
Payload capacity1.0 t
Fuel capacity150 l
Crew1 person
Total seating capacity (crew + passengers)10 persons
Maximum speed at design displacement25 knots
Hull materialAluminum alloy (AlMg5 or equivalent)
Coating systemColor to be agreed upon
Operating temperature range−15 °C to +35 °C
Storage temperatureDown to −20 °C
Main engine typeDiesel
Maximum main engine power210 hp
Fuel tank volume150 l
Seakeeping capabilitySea State 4
Endurance (fuel-based)48 hours
Central quick-release lifting hook for single-point suspension launchingYes
Quick-release hook compatible with the davitYes
Launch weight (with equipment, 100% fuel, and crew) within davit rated capacityYes
Power supply cables equipped with mating connectorsYes

3.2.4 SPTA Kit (Spare Parts, Tools, and Accessories)

Manufacturer standard for one-year operation: 1 set.

3.2.5 Documentation

Document TitleQuantity
Certificate / Passport1
Installation, commissioning, and adjustment instructions1
List of SPTA1
Operating manual1
Shipboard test program and procedure1
Factory acceptance test (FAT) protocol1
High-speed 10-person workboat, front and rear view outline drawing
High-speed 10-person workboat, front and rear view outline drawing

4. Additional Requirements

  • All equipment within the scope of supply is equipped with mating connections for system piping interfaces.
  • All equipment ports are fitted with standard blanks.
  • Instruction plates, warning signs, labels, and mimic diagrams are provided in Russian.
  • The scope of supply includes spare parts, consumables, and tools required for initial commissioning and one year of operation, compliant with the manufacturer standards and RMRS Rules.
  • Specialized tools required for overhaul, adjustment, assembly, disassembly, and installation of the equipment are also included.
  • The workboat davit is delivered with an RMRS Certificate (Form 6.5.30).
  • The high-speed workboat is delivered with an RMRS Certificate (Form 9.2.3) and an extract from the Register of Russian Industrial Products in compliance with the Government Decree of the Russian Federation No. 719 “On Confirmation of Production”.
  • The equipment documentation package must include the following:
    • RMRS Certificate (Form 6.5.30) for the workboat davit
    • RMRS Certificate (Form 9.2.3) for the workboat
    • Statement on sanctions limitations / absence of limitations regarding equipment supply due to sanctions imposed on the Russian Federation by the USA, EU, and other countries
    • Non-disclosure and confidentiality agreement regarding the received data
  • The equipment documentation package must also include:
    • Test procedures for equipment installation
    • Personnel training procedures for equipment installation
  • Coating system: RAL color code to be specified by the customer.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the date of delivery, unless otherwise specified in the contract.


Contacts

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

Email: contact@i-hydro.tech