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Revenue - Additional Information (Details) € in Thousands	12 Months Ended
	Dec. 31, 2024 EUR (€) contract	Dec. 31, 2023 EUR (€)	Dec. 31, 2022 EUR (€)
Revenue
Revenue - Lease component included within time charter services and transportation and installation.	€ 85,000	€ 79,000	€ 91,000
Total revenue	€ 248,738	108,622	106,424
Revenue from time charter contracts, Number of activities | contract	2
Transportation and installation revenue, Number of activities | contract	2
Percentage of contract backlog	100.00%
Subject to exercise of counterparty options (non-contingent)
Revenue
Percentage of contract backlog	50.00%
Subject to exercise of counterparty options (contingent)
Revenue
Percentage of contract backlog	50.00%
Revenue exceeded 10% of total revenue - Customer 1
Revenue
Total revenue	€ 60,000	44,500	52,400
Revenue exceeded 10% of total revenue - Customer 2
Revenue
Total revenue	58,000	28,500	€ 53,200
Revenue exceeded 10% of total revenue - Customer 3
Revenue
Total revenue	56,000	€ 22,700
Revenue exceeded 10% of total revenue - Customer 4
Revenue
Total revenue	€ 36,000
Europe
Revenue
Percentage of entity's revenue	50.00%	100.00%	100.00%
Rest of the world
Revenue
Percentage of entity's revenue	50.00%

X

- Definition

The percentage of contract backlog for which counterparty has exercised the option.

+ References

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- Definition

Number of activities from which time charter revenue is generated.

+ References

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- Definition

Number of activities from which transportation and installation revenue is generated.

+ References

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- Definition

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- Definition

The amount of operating lease income. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2024-01-01
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- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2024-01-01
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- Definition

The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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