v3.26.3
Payments, Details - 12 months ended Dec. 31, 2025 - USD ($)
$ in Thousands
Amount
Type
Country
Subnat. Juris.
Govt.
Project
Resource
Segment
Ext. Method
In-kind
In-kind Calc.
#: 1                      
$ 1,304 Fees Naoero snj:NR-14 Republic of Naoero, Naoero Seabed Minerals Authority NORI Project tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit Yes fair value of warrants
#: 2                      
33,056 Fees Naoero snj:NR-14 Republic of Naoero, Naoero Seabed Minerals Authority NORI Project tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit    
#: 3                      
214 Comm. Social Resp. Naoero snj:NR-14 Republic of Naoero, Naoero Seabed Minerals Authority NORI Project tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit    
#: 4                      
5,000 Fees Tonga snj:TO-04 Kingdom of Tonga, Tonga Seabed Minerals Authority TOML Project tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit Yes fair value of warrants
#: 5                      
90 Fees Tonga snj:TO-04 Kingdom of Tonga, Ministry of Lands and Natural Resources TOML Project tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit    
#: 6                      
228 Comm. Social Resp. Tonga snj:TO-04 Kingdom of Tonga, Tonga Seabed Minerals Authority TOML Project tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit    
#: 7                      
200 Fees United States   National Oceanic and Atmospheric Administration ("NOAA") TMC USA-A tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit    
#: 8                      
$ 100 Fees United States   National Oceanic and Atmospheric Administration ("NOAA") TMC USA-B tmc:PolymetallicNodulesResourceMember tmc:ClarionClippertonSegmentMember Open Pit