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About Cranemaster 2017-07-05T07:35:08+00:00

About Cranemaster

About Us

A short introduction to who we are and what we do.

Local Representatives

We have a solid network of Cranemaster representatives worldwide.

Cranemaster News

Updates about interesting projects around the world, product news and events we are participating at.

Management Team

Presentation of the members of the Cranemaster Management Team.

Order & Shipping

We have a large pool of rental units and pride ourselves to be able to solve customer requirements at short notice.

Frequently Asked Questions

What is the difference between AHC and PHC? Find the answer to this and other frequently asked questions in our FAQ section.

About Us

Cranemaster is a specialist provider of shock absorbers and heave compensators for offshore lifting operations. Our heave compensators and shock absorbers compensate forces and motions directly at the load or hook level, securing offshore lifting operations and enabling clients to work in higher waves. We have a large fleet of Cranemaster® units for lifts up to 1200 ton ready for immediate rental, located in Norway or at our local representatives.
Our competent engineering team is eager to solve any challenge you have related to dynamics or motions, using our existing technology or through development of tailor made solutions. Orcaflex analysis of lifting operations are carried out by our analysis team.
About Cranemaster company offshore lifting operations

Pioneers in offshore lifting

Founder Ernst B. Johansen

Since its foundation in 1983, Ernst-B. Johansen AS (the official company name) has become a market leader in the field of shock abasorption and passive heave compensation systems for offshore lifting operations.

The founder Ernst B. Johansen perceived a gap in the market following an increasing number of lifting incidents in the North Sea. With hard work and dedication he made the company a success in its niche.

Today – through its marketing brand Cranemaster – Ernst-B. Johnansen AS works closely with the world’s leading offshore contractors.

Innovation-product-development-workshop-Cranemaster

Continous product development

Innovation and continuous product development is at the heart of the Cranemaster philosophy. Since the first units were developed in the early 1980’s, they have been continuously improved and refined, with features such as Lock & Release, Quick Lift and Depth Compensation.

Today our adaptive systems are equipped with valves, sensors and PLS systems automatically optimizing the properties of the units from lift-off to landing.

Our new and modern facilities allows us to carry out various tests and simulations and even our largest units can be handled in-house.

Worldwide Sales & Support Network

Our products and services are marketed and distributed worldwide through a network of carefully chosen representatives. Feel free to contact them directly. Cranemaster® units are stored in Norway, Singapore, Australia, USA and UAE.

Local Representatives
Cranemaster local representatives usa brazil denmark australia singapore india uae

Featured News

  • Cranemaster at OEEC17

Meet Cranemaster at OFFSHORE ENERGY 17 in Amsterdam 10 – 11 October

October 2nd, 2017|0 Comments

We are looking forward to many good meetings at the OFFSHORE ENERGY 17 Exhibition & Conference in Amsterdam [...]

Cranemaster launching world’s largest passive heave compensator

November 15th, 2016|0 Comments

We have extended our fleet of units with the world’s largest PHC. Safe working load (SWL) for the [...]

  • Cranemaster new sales representative agent unique group middle east india singapore

Cranemaster partners with Unique Group to extend presence in the Middle East and India

November 15th, 2016|0 Comments

We are happy to inform that since November 2016, Unique Group, with its head office in Sharjah, UAE, [...]

  • Cranemaster passive heave compensator - Installation work with Boskalis at the Wikinger offshore wind farm

Installation work with Boskalis at the Wikinger offshore wind farm

November 15th, 2016|0 Comments

The Wikinger offshore wind farm is being developed by Iberdrola in the Baltic Sea area, within the German [...]

More News

Management Team

Espen Johansen

CEO

Espen Johansen has nearly 20 years of experience from the offshore oil & gas industry. Ten of these years in Statoil as a process engineer and later as a department technical advisor dealing with both subsea and topside applications. Espen has been involved in Cranemaster since the early 90`s, gathering extensive experience in the field of passive heave compensation.

Espen has education in both process/mechanical disciplines and business economics and is currently active on several boards of directors.

Sondre Gonsholt

CTO

Sondre Gonsholt has broad experience from the offshore industry, with particular focus on subsea technology. Starting at FMC Technologies, he worked as a field engineer offshore, supporting subsea well operations. He continued his career as technical lead and specialist engineer, developing new technology for vessel based riserless well intervention. Since joining Cranemaster, he has been responsible for several large development projects.

Sondre holds a Master’s degree in mechanical engineering from the Norwegian University of Science & Technology (NTNU).

Cranemaster management team mente baak

Mente Baak

Global Sales Manager

Mente Baak has held various management positions within international business development. He started his career in Mitsubishi Europe, before he was employed 15 years by the European headquarters of the bearing company NSK with  sales and marketing responsibilities in the Nordic countries. Before starting at Cranemaster, he was head of global sales & marketing at Kumera maritime gearboxes, initiating new market and product development.

Mente has a mechanical engineering background and education in management and business development. He is native Dutch, but has been living in Norway since 1999.

Cranemaster management team kristian helland

Kristian Helland

Product Manager

Kristian Helland has broad experience from technology and product development. His career started in SINTEF Applied Chemistry as scientist within analytical chemistry and empirical modelling. After several years in Borealis as researcher and manager in product and process development he continued to solar wafer production as part of the Technology Mangement team in REC Wafer, part of REC Group.

Kristian holds a PhD in analytical chemistry and empirical modelling from the Norwegian University of Science & Technology (NTNU).

Order & Shipping

We have a large pool of rental units and pride ourselves to be able to solve customer requirements at short notice.
Reservartions of Cranemaster® units are guaranteed with a PO followed by an order confirmation from us.
Cranemaster-transportation-shipping

Cranemaster® units can be shipped by road or by air. Shipment is usually done in open containers or on pallets. If air freighted, the units can not be pressurized in advance. Dimensions and weight are given in Product Data Sheets for each unit.

Cranemaster® units are delivered with

  • Heavy Duty shackles on both ends. Wide body shackles can be delivered on request.
  • Hoses, manometer, gas filling set and adapter for Nitrogen bottles.
  • Valid certificates according to DNV Rules for Certification of lifting Appliances 2.22
  • Manual

If required, a service technician can be sent from Cranemaster to assist with mobilization, to give a session on site for the operational crew, or to assist offshore during the lifting operation.

Product Data Sheets for spesific Cranemaster® units can be requested either through our Inquiry Form or from our Rental Fleet overview.

Frequently Asked Questions

Will Cranemaster® have any effect on peak loads for lifts in air? 2017-05-15T07:31:15+00:00

Yes. When there is relative motion between the lifted object and the boom tip, a snap load will occur, increasing DAF and potentially lead to unacceptable high peak loads.  Cranemaster® will work as a shock absorber, efficiently removing these snap loads, reduce DAF and improve safety. Typically, this enables our clients to conduct such lifts in higher waves, thereby increasing the operational weather window.

Will Cranemaster® reduce motion in air? 2017-05-15T07:30:36+00:00

No, as passive Cranemaster® units rely on external forces to reduce motion, it will have no impact on the movements of free hanging objects in air.

What is the difference between Active Heave Compensation (AHC) and Passive Heave Compensation (PHC)? 2017-05-13T14:40:49+00:00

Both Active Heave Compensation (AHC) and Passive Heave Compensation (PHC) are techniques used on lifting equipment to reduce the influence of waves upon offshore operations. AHC differs from PHC by having a control system that actively compensates for any movement using external energy. Passive systems reacts to external forces without additional energy to control the motion. 

Can Cranemaster® units be used together with AHC? 2017-03-09T15:07:23+00:00

Yes, Cranemaster® units will work perfectly together with AHC that responds to inputs from an accelerometer.

Can Cranemaster® be used to reduce dynamic hook loads when lifting through the splash zone? 2017-03-09T15:07:44+00:00

Yes, the Cranemaster® is designed to instantly respond to its surroundings, take up slack wire and reduce dynamic loads.

What is the deepest operating depth for the Cranemaster® units? 2017-03-09T15:08:04+00:00

As of today Cranemaster® has been used at 2700 meters water depth and is designed to operate down to 3000 meters. However, for deep water operations special depth compensation techniques may be required.

Let us help you find the right solution for your project

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