XML 46 R28.htm IDEA: XBRL DOCUMENT
v3.22.1

VESSELS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
VESSELS [Abstract] |
Vessels | Vessels consists of the carrying value of 21 and 23 vessels for the year ended December 31, 2021 and December 31, 2020, respectively. Vessels includes capitalized drydocking costs. One vessel is presented as Held for Sale as of December 31, 2021, and is presented as a disposal in the table below.
All figures in USD ‘000 |  | 2021 |  |  | 2020 |
Vessels Cost as of January 1 |  |  | 1,316,463 |  |  |  | 1,309,618 |
Additions Vessels |  |  | 3,868 |  |  |  | 6,845 |
Disposals Vessels |  |  | (76,183 | ) |  |  | - |
Drydocking Cost as of January 1 |  |  | 82,227 |  |  |  | 59,949 |
Additions Drydocking |  |  | 7,881 |  |  |  | 22,278 |
Disposals Drydocking |  |  | (10,061 | ) |  |  | - |
Total Cost Vessels and Drydocking |  |  | 1,324,195 |  |  |  | 1,398,690 |
Less Accumulated Depreciation |  |  | (557,527 | ) |  |  | (537,348 | )
Less Accumulated Impairment Loss on Vessels |  |  | (51,405 | ) |  |  | - |
Net Book Value Vessels as of December 31 |  |  | 715,263 |  |  |  | 861,342 |
Vessel Held for Sale |  |  | 14,960 |  |  |  | - |

X
- Definition Tabular disclosure of net book value, accumulated depreciation, and depreciation expense of vessels that are used in the normal conduct of business and not intended for resale. + References No definition available. + Details
Name: | nat_VesselsNetTableTextBlock
Namespace Prefix: | nat_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration