Our passion


Intermediate and 5 annual docking of sailing vessels according to classification. In compliance with company standards and supplied dock list for repairs. Pre-visit and budget for the docking with all preparatory work in consultation with the ship's SI.

Supervision of new construction projects from start to sea trial. Onsite new construction supervision and possibility to set up a new construction supervision team.

Conversion of existing ships. Converting a ship to increase capacity for economic benefit. Improving and adapting systems that are important for the environment. Construction and machinery adjustments.


Manage better.


Setting up and implementing PMS systems or other office systems.

Technical management of vessels: DOC holder with or without complete Technical management under monthly management fee. freelance superintendent with an office day twice a week.


Safe handling.

All inspections include drawing up a damage report and possibly a cost overview. We look at and assess the types of damage and cause as an independent party.

HJR Promaship stands for

Why we?

HJR Promaship is versatile in all nautical and technical areas and has a broad experience in shipping. Harm Jan Rinkema has experience in shipping since 1991 as a seafarer. From 2008 experience as Superintendent.


The places where I (have) done work


Do you have a question or comment?

You can send your questions and/or comments via the contact form. We will answer them almost immediately. You can also schedule an appointment using the contact form. If you state a preferred date and time in the comments field, we will contact you as soon as possible to confirm this appointment.