The sanctions listing names Silver Tetra Marine Co as owner/operator. Ownership stated at designation may have changed since.

What flag does Guanyin fly?

Liberia at the time of listing. Sanctioned vessels are frequently reflagged.

VesselSanctions-listedRussian shadow fleet Iranian shadow fleetIMO 9299707

Guanyin

Oil Tanker
Flag: Liberia
First dated designation: 2025-12-13
Listed by OFAC SDN (US), UK Sanctions List, SECO (Switzerland)
0 list events tracked

Is Guanyin sanctioned?

Yes. Guanyin (IMO 9299707) is currently designated on OFAC SDN (US), SECO (Switzerland), UK Sanctions List under IRAN-EO13902, Russia (Sanctions) (EU Exit) Regulations 2019, Situation in Ukraine. The earliest dated designation we hold is 2025-12-13.

Vessel particulars (as published on sanctions lists)

IMO number

9299707

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2026-02-24
Extractor: sanctions-group/1

Raw evidence

The Secretary of State has reasonable grounds to suspect that IMO 9299707 (‘GUANYIN’) is, has been or is likely to be involved in activity whose object or effect is to destabilise Ukraine or undermine or threaten the territorial integrity, sovereignty or independence of Ukraine or to obtain a benefit from or support the Government of Russia. Namely, 9299707 is involved in carrying oil or oil products that originated in Russia from Russia to a third country.

Source

Verified: copied from a structured field of an authoritative source

Source: Swiss SECO Sanctions List
Retrieved: 2026-09-29
Source date: 2025-12-13
Extractor: sanctions-group/1

Raw evidence

<target ssid="99613"><sanctions-set-id>77993</sanctions-set-id><object object-type="vessel"><identity ssid="99615" main="true"><name ssid="99616" name-type="primary-name" quality="good" lang="eng"><name-part order="1" name-part-type="whole-name"><value>Guanyin</value></name-part></name></identity><justification ssid="99614">Transport crude oil or petroleum products as listed in Annex XXV or mineral products that originate in Russia or are exported from Russia and practice irregular and high-risk shipping practices as set out in the International Maritime Organisation General Assembly resolution A.1192(33).</justification><other-information ssid="99617">IMO number: 9299707</other-information></object><modification modification-type="listed" enactment-date="2025-12-12" publication-date="2025-12-12" effective-date="2025-12-13"/></target>

+1 more

MMSI

636012383

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

<idNumber>636012383</idNumber>

Call sign

A8FD8

Vessel type

Oil Tanker

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2026-02-24
Extractor: sanctions-group/1

Raw evidence

<TypeOfShip>Oil Tanker</TypeOfShip>

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

<vesselType>Crude Oil Tanker</vesselType>

Flag

Liberia

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>Liberia</vesselFlag>

Tonnage

109,857 GRT

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2026-02-24
Extractor: sanctions-group/1

Raw evidence

<TonnageOfShip>109857</TonnageOfShip>

Year built

2005

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2026-02-24
Extractor: sanctions-group/1

Raw evidence

<YearBuilt>2005</YearBuilt>

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

<idNumber>2005</idNumber>

Listed owner / operator

Silver Tetra Marine Co

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2026-02-24
Extractor: sanctions-group/1

Raw evidence

<CurrentOwnerOperator>Silver Tetra Marine Co</CurrentOwnerOperator>

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 54912

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>54912</uid>
    <lastName>GUANYIN</lastName>
    <sdnType>Vessel</sdnType>
    <remarks>(Linked To: SILVER TETRA MARINE CO.)</remarks>
    <programList>
      <program>IRAN-EO13902</program>
    </programList>
    <idList>
      <id>
        <uid>48740</uid>
        <idType>Vessel Registration Identification</idType>
        <idNumber>IMO 9299707</idNumber>
      </id>
      <id>
        <uid>48741</uid>
        <idType>MMSI</idType>
        <idNumber>636012383</idNumber>
      </id>
      <id>
        <uid>191452</uid>
        <idType>Vessel Year of Build</idType>
        <idNumber>2005</idNumber>
      </id>
    </idList>
    <vesselInfo>
      <callSign>A8FD8</callSign>
      <vesselType>Crude Oil Tanker</vesselType>
      <vesselFlag>Liberia</vesselFlag>
    </vesselInfo>
  </sdnEntry>

Name on list: GUANYIN
Programmes / regimes: IRAN-EO13902
Identifiers: IMO: 9299707
Linked to (per list): SILVER TETRA MARINE CO.
Remarks: (Linked To: SILVER TETRA MARINE CO.)

SECO (Switzerland)Active listingID 99613

Source

Verified: copied from a structured field of an authoritative source

Source: SECO (Switzerland)
Retrieved: 2026-09-29
Source date: 2025-12-13
Extractor: seco-xml-parser

Raw evidence

<target ssid="99613"><sanctions-set-id>77993</sanctions-set-id><object object-type="vessel"><identity ssid="99615" main="true"><name ssid="99616" name-type="primary-name" quality="good" lang="eng"><name-part order="1" name-part-type="whole-name"><value>Guanyin</value></name-part></name></identity><justification ssid="99614">Transport crude oil or petroleum products as listed in Annex XXV or mineral products that originate in Russia or are exported from Russia and practice irregular and high-risk shipping practices as set out in the International Maritime Organisation General Assembly resolution A.1192(33).</justification><other-information ssid="99617">IMO number: 9299707</other-information></object><modification modification-type="listed" enactment-date="2025-12-12" publication-date="2025-12-12" effective-date="2025-12-13"/></target>

Name on list: Guanyin
Programmes / regimes: Situation in Ukraine
Listed on: 2025-12-13
Last updated: 2025-12-13
Identifiers: IMO: 9299707
Remarks: Transport crude oil or petroleum products as listed in Annex XXV or mineral products that originate in Russia or are exported from Russia and practice irregular and high-risk shipping practices as set out in the International Maritime Organisation General Assembly resolution A.1192(33). IMO number: 9299707

UK Sanctions ListActive listingID RUS3380

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2026-02-24
Extractor: uk-xml-parser

Raw evidence

<Designation>
    <LastUpdated>24/02/2026</LastUpdated>
    <DateDesignated>24/02/2026</DateDesignated>
    <UniqueID>RUS3380</UniqueID>
    <Names>
      <Name>
        <Name6>GUANYIN</Name6>
        <NameType>Primary Name</NameType>
      </Name>
    </Names>
    <RegimeName>The Russia (Sanctions) (EU Exit) Regulations 2019</RegimeName>
    <IndividualEntityShip>Ship</IndividualEntityShip>
    <DesignationSource>UK</DesignationSource>
    <SanctionsImposed>Shipping sanctions: (see "Other information")</SanctionsImposed>
    <SanctionsImposedIndicators>
      <AssetFreeze>false</AssetFreeze>
      <ArmsEmbargo>false</ArmsEmbargo>
      <TargetedArmsEmbargo>false</TargetedArmsEmbargo>
      <CharteringOfShips>false</CharteringOfShips>
      <ClosureOfRepresentativeOffices>false</ClosureOfRepresentativeOffices>
      <CrewServicingOfShipsAndAircraft>false</CrewServicingOfShipsAndAircraft>
      <Deflag>false</Deflag>
      <PreventionOfBusinessArrangements>false</PreventionOfBusinessArrangements>
      <ProhibitionOfPortEntry>false</ProhibitionOfPortEntry>
      <TravelBan>false</TravelBan>
      <PreventionOfCharteringOfShips>false</PreventionOfCharteringOfShips>
      <PreventionOfCharteringOfShipsAndAircraft>false</PreventionOfCharteringOfShipsAndAircraft>
      <TechnicalAssistanceRelatedToAircraft>false</TechnicalAssistanceRelatedToAircraft>
      <TrustServicesSanctions>false</TrustServicesSanctions>
      <DirectorDisqualificationSanction>false</DirectorDisqualificationSanction>
    </SanctionsImposedIndicators>
    <OtherInformation>Shipping sanctions: a specified ship is prohibited from being provided with access to or having its master or pilot cause it to enter a port in the UK, may have its registration on the UK Ship Register terminated, and a master or pilot of a specified ship may be given a port barring direction, a detention direction, and a port entry direction or a movement direction.</OtherInformation>
    <UKStatementofReasons>
The Secretary of State has reasonable grounds to suspect that IMO 9299707 (‘GUANYIN’) is, has been or is likely to be involved in activity whose object or effect is to destabilise Ukraine or undermine or threaten the territorial integrity, sovereignty or independence of Ukraine or to obtain a benefit from or support the Government of Russia. Namely, 9299707 is involved in carrying oil or oil products that originated in Russia from Russia to a third country. 
</UKStatementofReasons>
    <ShipDetails>
      <Ship>
        <IMONumbers>
          <IMONumber>IMO9299707</IMONumber>
        </IMONumbers>
        <CurrentOwnerOperators>
          <CurrentOwnerOperator>Silver Tetra Marine Co</CurrentOwnerOperator>
        </CurrentOwnerOperators>
        <TypeOfShipDetails>
          <TypeOfShip>Oil Tanker</TypeOfShip>
        </TypeOfShipDetails>
        <TonnageOfShipDetails>
          <TonnageOfShip>109857</TonnageOfShip>
        </TonnageOfShipDetails>
        <YearsBuilt>
          <YearBuilt>2005</YearBuilt>
        </YearsBuilt>
      </Ship>
    </ShipDetails>
  </Designation>

Name on list: GUANYIN
Programmes / regimes: Russia (Sanctions) (EU Exit) Regulations 2019
Listed on: 2026-02-24
Last updated: 2026-02-24
Identifiers: IMO: 9299707
Remarks: The Secretary of State has reasonable grounds to suspect that IMO 9299707 (‘GUANYIN’) is, has been or is likely to be involved in activity whose object or effect is to destabilise Ukraine or undermine or threaten the territorial integrity, sovereignty or independence of Ukraine or to obtain a benefit from or support the Government of Russia. Namely, 9299707 is involved in carrying oil or oil products that originated in Russia from Russia to a third country. Shipping sanctions: a specified ship is prohibited from being provided with access to or having its master or pilot cause it to enter a port in the UK, may have its registration on the UK Ship Register terminated, and a master or pilot of a specified ship may be given a port barring direction, a detention direction, and a port entry direction or a movement direction. Sanctions imposed: Shipping sanctions: (see "Other information")

Linked parties (1)

Listed owner / operator (1)

Silver Tetra Marine Co.Sanctions-listed party · ofac
Source
Verified: copied from a structured field of an authoritative source
Source
UK Sanctions List
Retrieved
2026-09-29
Source date
2026-02-24
Extractor
sanctions-group/1
Raw evidence
```
<CurrentOwnerOperator>Silver Tetra Marine Co</CurrentOwnerOperator>
```

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.