The sanctions listing names Korean Ansan Shipping as owner/operator. Ownership stated at designation may have changed since.

What flag does An San 1 fly?

North Korea at the time of listing; previously Russia. Sanctioned vessels are frequently reflagged.

VesselSanctions-listedNorth Korea-linked sanctioned vesselsIMO 7303803

An San 1

Also listed as / former names: Alchimist Marathon · Alchimist Rotterdam · Ansan-1 · Beste S · Chimiste Nantes · Efes · Ermak · Tiger Cub

Chemical Carrier
Flag: North Korea (previously Russia)
First dated designation: 2018-03-30
Listed by OFAC SDN (US), UK Sanctions List, SECO (Switzerland)
0 list events tracked

Is An San 1 sanctioned?

Yes. An San 1 (IMO 7303803) is currently designated on OFAC SDN (US), SECO (Switzerland), UK Sanctions List under DPRK4, Democratic People's Republic of Korea (Sanctions) (EU Exit) Regulations 2019, North Korea. The earliest dated designation we hold is 2018-03-30. It has also been listed under the names Alchimist Marathon, Alchimist Rotterdam, Ansan-1, Beste S.

Vessel particulars (as published on sanctions lists)

IMO number

7303803

Source

Verified: copied from a structured field of an authoritative source

Source: Swiss SECO Sanctions List
Retrieved: 2026-09-29
Source date: 2018-03-30
Extractor: sanctions-group/1

Raw evidence

<target ssid="38821"><sanctions-set-id>34422</sanctions-set-id><object object-type="vessel"><identity ssid="38822" main="true"><name ssid="38823" name-type="primary-name" quality="good" lang="eng"><name-part order="1" name-part-type="whole-name"><value>An San 1</value></name-part></name></identity><other-information ssid="38824">IMO number: 7303803</other-information></object><modification modification-type="listed" enactment-date="2018-04-03" publication-date="2018-04-03" effective-date="2018-03-30"/></target>

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2018-03-30
Extractor: sanctions-group/1

Raw evidence

<IMONumber>7303803</IMONumber>

+1 more

MMSI

Not available

Call sign

Not available

Vessel type

Chemical Carrier

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2018-03-30
Extractor: sanctions-group/1

Raw evidence

<TypeOfShip>Chemical Carrier</TypeOfShip>

Flag

North Korea

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2018-03-30
Extractor: sanctions-group/1

Raw evidence

<CurrentBelievedFlagOfShip>North Korea</CurrentBelievedFlagOfShip>

Source

Verified: copied from a structured field of an authoritative source

Source: OFAC Specially Designated Nationals (SDN) List
Retrieved: 2026-09-29
Extractor: sanctions-group/1

Raw evidence

<vesselFlag>Democratic People's Republic of Korea</vesselFlag>

Previous flags

Russia

Tonnage

1,757 GRT

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2018-03-30
Extractor: sanctions-group/1

Raw evidence

<TonnageOfShip>1757</TonnageOfShip>

Year built

1973

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2018-03-30
Extractor: sanctions-group/1

Raw evidence

<YearBuilt>1973</YearBuilt>

Listed owner / operator

Korean Ansan Shipping

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2018-03-30
Extractor: sanctions-group/1

Raw evidence

<CurrentOwnerOperator>Korean Ansan Shipping</CurrentOwnerOperator>

Other / former names

Alchimist Marathon · Alchimist Rotterdam · Ansan-1 · Beste S · Chimiste Nantes · Efes · Ermak · Tiger Cub

Particulars are as stated by the listing authorities and may be outdated; vessels are frequently renamed and reflagged.

Sanctions listings (3)

Consolidated entry →

OFAC SDN (US)Active listingID 23730

Source

Verified: copied from a structured field of an authoritative source

Source: OFAC SDN (US)
Retrieved: 2026-09-29
Extractor: ofac-xml-parser

Raw evidence

<sdnEntry>
    <uid>23730</uid>
    <lastName>AN SAN 1</lastName>
    <sdnType>Vessel</sdnType>
    <remarks>(Linked To: KOREA ANSAN SHIPPING COMPANY)</remarks>
    <programList>
      <program>DPRK4</program>
    </programList>
    <idList>
      <id>
        <uid>15209</uid>
        <idType>Vessel Registration Identification</idType>
        <idNumber>IMO 7303803</idNumber>
      </id>
      <id>
        <uid>135122</uid>
        <idType>Transactions Prohibited For Persons Owned or Controlled By U.S. Financial Institutions:</idType>
        <idNumber>North Korea Sanctions Regulations section 510.214</idNumber>
      </id>
      <id>
        <uid>127380</uid>
        <idType>Secondary sanctions risk:</idType>
        <idNumber>North Korea Sanctions Regulations, sections 510.201 and 510.210</idNumber>
      </id>
    </idList>
    <vesselInfo>
      <vesselFlag>Democratic People's Republic of Korea</vesselFlag>
    </vesselInfo>
  </sdnEntry>

Name on list: AN SAN 1
Programmes / regimes: DPRK4
Identifiers: IMO: 7303803
Linked to (per list): KOREA ANSAN SHIPPING COMPANY
Remarks: (Linked To: KOREA ANSAN SHIPPING COMPANY)

SECO (Switzerland)Active listingID 38821

Source

Verified: copied from a structured field of an authoritative source

Source: SECO (Switzerland)
Retrieved: 2026-09-29
Source date: 2018-04-03
Extractor: seco-xml-parser

Raw evidence

<target ssid="38821"><sanctions-set-id>34422</sanctions-set-id><object object-type="vessel"><identity ssid="38822" main="true"><name ssid="38823" name-type="primary-name" quality="good" lang="eng"><name-part order="1" name-part-type="whole-name"><value>An San 1</value></name-part></name></identity><other-information ssid="38824">IMO number: 7303803</other-information></object><modification modification-type="listed" enactment-date="2018-04-03" publication-date="2018-04-03" effective-date="2018-03-30"/></target>

Name on list: An San 1
Programmes / regimes: North Korea
Listed on: 2018-03-30
Last updated: 2018-04-03
Identifiers: IMO: 7303803
Remarks: IMO number: 7303803

UK Sanctions ListActive listingID DPR0097

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2021-12-18
Extractor: uk-xml-parser

Raw evidence

<Designation>
    <LastUpdated>18/12/2021</LastUpdated>
    <DateDesignated>30/03/2018</DateDesignated>
    <UniqueID>DPR0097</UniqueID>
    <OFSIGroupID>13648</OFSIGroupID>
    <Names>
      <Name>
        <Name6>An San 1</Name6>
        <NameType>Primary name</NameType>
      </Name>
      <Name>
        <Name6>Alchimist Marathon</Name6>
        <NameType>Alias</NameType>
      </Name>
      <Name>
        <Name6>Alchimist Rotterdam</Name6>
        <NameType>Alias</NameType>
      </Name>
      <Name>
        <Name6>Ansan-1</Name6>
        <NameType>Alias</NameType>
      </Name>
      <Name>
        <Name6>Beste S</Name6>
        <NameType>Alias</NameType>
      </Name>
      <Name>
        <Name6>Chimiste Nantes</Name6>
        <NameType>Alias</NameType>
      </Name>
      <Name>
        <Name6>Efes</Name6>
        <NameType>Alias</NameType>
      </Name>
      <Name>
        <Name6>Ermak</Name6>
        <NameType>Alias</NameType>
      </Name>
      <Name>
        <Name6>Tiger Cub</Name6>
        <NameType>Alias</NameType>
      </Name>
    </Names>
    <RegimeName>The Democratic People's Republic of Korea (Sanctions) (EU Exit) Regulations 2019</RegimeName>
    <IndividualEntityShip>Ship</IndividualEntityShip>
    <DesignationSource>UN</DesignationSource>
    <SanctionsImposed>Asset freeze|Prohibition of port entry</SanctionsImposed>
    <SanctionsImposedIndicators>
      <AssetFreeze>true</AssetFreeze>
      <ArmsEmbargo>false</ArmsEmbargo>
      <TargetedArmsEmbargo>false</TargetedArmsEmbargo>
      <CharteringOfShips>false</CharteringOfShips>
      <ClosureOfRepresentativeOffices>false</ClosureOfRepresentativeOffices>
      <CrewServicingOfShipsAndAircraft>false</CrewServicingOfShipsAndAircraft>
      <Deflag>false</Deflag>
      <PreventionOfBusinessArrangements>false</PreventionOfBusinessArrangements>
      <ProhibitionOfPortEntry>true</ProhibitionOfPortEntry>
      <TravelBan>false</TravelBan>
      <PreventionOfCharteringOfShips>false</PreventionOfCharteringOfShips>
      <PreventionOfCharteringOfShipsAndAircraft>false</PreventionOfCharteringOfShipsAndAircraft>
      <TechnicalAssistanceRelatedToAircraft>false</TechnicalAssistanceRelatedToAircraft>
      <TrustServicesSanctions>false</TrustServicesSanctions>
      <DirectorDisqualificationSanction>false</DirectorDisqualificationSanction>
    </SanctionsImposedIndicators>
    <OtherInformation>Pursuant to paragraph 6 of Security Council Resolution 2371 (2017), paragraph 6 of Security Council Resolution 2375 (2017)and paragraph 12 of Security Council resolution 2321 (2016). DPRK tanker M/V AN SAN 1 was involved in ship-to-ship transfer operations, likely for oil, in late January 2018. Listed as asset of Korea Ansan Shipping Company (OFSI ID: 13633, UN Reference Number: UN Ref KPe.062)</OtherInformation>
    <UKStatementofReasons>
</UKStatementofReasons>
    <ShipDetails>
      <Ship>
        <IMONumbers>
          <IMONumber>7303803</IMONumber>
        </IMONumbers>
        <CurrentOwnerOperators>
          <CurrentOwnerOperator>Korean Ansan Shipping</CurrentOwnerOperator>
        </CurrentOwnerOperators>
        <CurrentBelievedFlagOfShips>
          <CurrentBelievedFlagOfShip>North Korea</CurrentBelievedFlagOfShip>
        </CurrentBelievedFlagOfShips>
        <PreviousFlags>
          <PreviousFlag>Russia</PreviousFlag>
        </PreviousFlags>
        <TypeOfShipDetails>
          <TypeOfShip>Chemical Carrier</TypeOfShip>
        </TypeOfShipDetails>
        <TonnageOfShipDetails>
          <TonnageOfShip>1757</TonnageOfShip>
        </TonnageOfShipDetails>
        <LengthOfShipDetails>
          <LengthOfShip>86</LengthOfShip>
        </LengthOfShipDetails>
        <YearsBuilt>
          <YearBuilt>1973</YearBuilt>
        </YearsBuilt>
      </Ship>
    </ShipDetails>
  </Designation>

Name on list: An San 1
Programmes / regimes: Democratic People's Republic of Korea (Sanctions) (EU Exit) Regulations 2019
Listed on: 2018-03-30
Last updated: 2021-12-18
Aliases: Alchimist Marathon · Alchimist Rotterdam · Ansan-1 · Beste S · Chimiste Nantes · Efes · Ermak · Tiger Cub
Identifiers: IMO: 7303803
OFSI group ID: 13648
Remarks: Pursuant to paragraph 6 of Security Council Resolution 2371 (2017), paragraph 6 of Security Council Resolution 2375 (2017)and paragraph 12 of Security Council resolution 2321 (2016). DPRK tanker M/V AN SAN 1 was involved in ship-to-ship transfer operations, likely for oil, in late January 2018. Listed as asset of Korea Ansan Shipping Company (OFSI ID: 13633, UN Reference Number: UN Ref KPe.062) Sanctions imposed: Asset freeze|Prohibition of port entry

Linked parties (0)

No owner, operator or linked party could be resolved from the lists.

Timeline

No list changes detected since monitoring began.

Inclusion on a sanctions list is an administrative designation by the listing authority. Vessel particulars, names and ownership may have changed since designation. This page is informational and not a legal or compliance determination.