About us

High class and cost efficient service

The company was established in 2015 and we strive to provide our clients with high class and cost efficient services built upon competency and experience. We provide consultancy services to the shipping industry in general, and to the P&I, H&M and Marine insurance market in particular.

Core values

Our core value is to be client orientated and our services focus on:

  • Confidentiality and Integrity
  • Experienced and skilled team having nautical, technical and legal expertise
  • Worldwide and 24/7 availability
  • Standardized and easy to read reports
  • Transparency and fair billing

World wide surveyor service

Our office is located in Gothenburg, Sweden and our primary geographical service area is, of course Scandinavia and the Baltic region, we are also available to travel worldwide, even at a short notice.

Our strategic geographical location in the vicinity of Scandinavia’s largest port,  only 132km from the second largest port, as well as being only 20 minutes away from an international airport, with several departures across Europe every day, enables us to be on-site within a short period of time and at a reasonable cost.

Our team

The JnJ team of consultants have long experience and in-depth knowledge from the global world of shipping; ship management, newbuilding projects, marine insurance and liquid cargo expertise are some examples from the team background.

The management consist of Johan Åstrand and Jonas Gustavsson who founded the company and together with a team of senior consultants and surveyors form a strong team, ready to support clients 24/7.


Johan Åstrand

Seagoing background, Deck Officer



Jonas Gustavsson

Seagoing background, Marine Engineer



Yvonne Mikulandra

UW & H&M Claims background

Senior Consultant


Capt. Magnus Having

Seagoing background, Deck Officer



Lars-Erik Hellring

Seagoing background, Marine Engineer


Tommy Hjälmås

Seagoing background. Marine Engineer


Our cooperation partners


JnJ Survey has established a technical cooperation agreement with the surveying company SUL based in Portugal.

We share the same core values, striving to offer a client oriented prime service. This cooperation targets the enhancement of reporting procedures, the setting up of shared strategic training programs, the creation of a common technical database, and a broader and around the clock availability.

Through this cooperation we can offer the market the knowledge and experience retained over the years by a multidisciplinary team of individuals, including but not limited to naval architecture, marine engineering, nautical experience, marine insurance claims handling and adjusting (H&M, LOH, P&I), classification societies and marine engines service engineering.


Palmgren Marine

Palmgren Marine was established in 2021 by Allan Palmgren and the company is based on Fyn in Denmark.

A long and diversified background from ship owners, marine underwriters and shipyards accumulate wide range of experience which is used for serving the marine and offshore clients.


MH Shipping Concept

MH Shipping Concept AB serves the marine sector with different types of consulting services, specialties are Internal Audits, Navigational Audits, Pre-Vetting Inspections.



A company devoted to Marine Energy Solution for the future.



Altamarine supports the liquified gas shipping industry with knowledge and expertise from many years of dealing with technically complex assets. We further focus on the transition to the “fuels of the future” such as LNG, LPG (Propane & Butane), Ethane, Methanol and Ammonia, where we support both crew, owners, operators, and shipyards in their challenge with increasing technical demands.


Our partners: