NEWS 2023 - SKARV SONAR HANDLING
SKARV – THE STORY BEHIND
We wondered, what are the challenges to launch and recover a high-tech towfish from a boat at speed? Could we engineer a solution to “fish” sensitive equipment from the sea? Is there already an expert that we can learn from?
We went out in the Swedish archipelago to see how the nature and evolution solved this, and we found an expert in abundance – The Skarv!
Skarv is the Swedish name for the Cormorant bird who is a reliable and successful angler – and the industry needs help to “catch” side scan sonars safely! What makes the Skarv successful?
Could we emulate this into a new product?
THE NEW SKARV PRODUCTS
We proudly present our new product range for side scan sonars. Lidan Skarv products are a new evolution of Launch and Recovery Systems. Today the Skarv is available in 3 sizes, with a tow capacity from 3 kN up to 20 kN.
Designed for launching a side scan sonar from deck down through the splash zone, and for towing the side scan sonar.
Distinctive features of the Skarv products:
– Easy installation – without special vessel modifications,
– Safety for personnel and sonar
– USV ready
SKARV – THE DESIGN PROCESS
With inspiration from the Skarv (Swedish for Cormorant bird), and from the market’s need for safe sonar handling, our engineers designed a new product for efficient launch and recovery of side scan sonars.
What are the most important design criteria for this product?
1.Safety of the personnel
2.Safety of the sonar product
3.Affordability
4.Light weight and modular
5.Easy to use
6.USV ready
LARS FOR TOWED AND AUTONOMOUS SENSORS
Unmanned vessels comes with high demands on light weight, minimum footprint and reliability. Lidan Marine is working with leading USV and UUV manufacturing companies to deliver LARS equipment to meet the latest technology. The equipment is designed to be ship integrated on e.g. USV’s, and to be remotely operated.
Unmanned vessels comes with high demands on light weight, minimum foot print and reliability. Lidan Marine is working with leading Unmanned Surface Vehicles (USV) and Unmanned Underwater Vehicles (UUV) manufacturing companies to deliver LARS equipment to meet the latest technology. The equipment is designed to be shipped integrated on e.g. USV’s, and to be remotely operated.
With in-house development and proven designs for towing, launch and recovery of various Sonars and AUV’s.
Search & Recovery
Hydrographic Survey’s
Marine Seismic
Mine Counter Measures
Anti-Submarine Warfare
Lidan Marine design team has over the years developed design techniques for delivering light weight, shock proof and non-magnetic material designs. Combined with the latest in electronics and controls, Lidan can offer safe local operator interface as well as remote operation for unmanned vessels.
Mission Module
Handling Systems
The modern multi purpose combat ship is designed to be agile for a wide range of missions and equipment. For utilizing the onboard space as efficient as possible, the process how to move the mission modules is equally important.
Lidan Marine have developed a Mission Module Handling System (MMHS), with low weight, compact design and minimum deck loads as major design criteria.
The MMHS is used for loading and unloading, as well as rearranging the modules onboard the ship. One system performing several operations. Customers saves not only weight and space but just as important reduced handling time is achieved.
Property of SAAB/Kockums.
THE VISBY CLASS CORVETTE
The Visby-class corvettes from Saab continues to set the world benchmark for littoral fighting ships. It is a flexible surface combatant, designed for a wide range of roles.
Lidan Marine has developed and delivered electric and hydraulic naval handling system for Mine Counter Measures (MCM) and Anti Submarine Warfare (ASW) equipment.
By using high tensile material and optimized construction via FEM-calculations, low weight designs are achieved. Chock from mine-explosion is reduced by structure with no requirement for dampers giving significant weight reduction. Winch design with direct driven hydraulic motor reduces structural noise.
REFERENCE PROJECT VISBY CLASS CORVETTE
Towed Array Sonar winch
Low weight structural design. PLC controlled level wind with capacity to handle different cable diameters and couplers during the length of the cable.
VDS WINCH
Low weight design, equipped with Active Heave Compensation for force and pitch reduction when towing the VDS Body.
VDS STOW FRAME
Designed for stowing and protecting the VDS body against shocks.
VDS HANDLING FRAME
For launch and recovery of the VDS Body with optimized design for low weight and limited space. Designed in high tensile and stainless steel for best magnetic signature reduction. Built according to DNV lifting appliances.
LIFTING YOU - SINCE 1909
ACTIVE HEAVE
COMPENSATION
Controlling the relative motion between floating objects has always been a challenge in naval and offshore applications. For many of us the jump ashore from ship is easy when distance is short and sea is calm. But what about teaching a machine to make the move at an indefinite distance in a storm? To conquer this challenge of motion control requires mastering the technologies for passive as well as active compensation.
SPOOLING
CAPABILITIES
Possibilities to spool umbilical cable or wire rope in various dimensions. Lidan Marine offers the service of spooling your umbilical cable or wire rope on the finalized winch.
FACTORY
ACCEPTANCE
TESTS
Lidan Marine always performs Factory Acceptance Tests (FAT) as a part of its commitment to its customers.
Our company possesses test equipment and benches for a variety of quality assured test procedures. When required, a third party supervisor is present at the test.
BUSINESS AREAS
SUBSEA
LARS for ROV’s, Umbilical winches, Overhead travelling systems and Launch frames proven to complete reliability”.
INDUSTRY
Our professional understanding of the benefits in each choice of technology means that we can support our customers in their product development. Lidan Marine supplies tailored hydraulic and electric solutions for a variety of applications.
SERVICE & AFTERSALES
24/7 – World Wide, Service and After Sales Support.
MARINE
Complete hydraulic and electric winch and handling systems.