The sanctions listing names Ocean Waters Maritime Corp; Dream Islands Shipping LLC as owner/operator. Ownership stated at designation may have changed since.

What flag does Python fly?

Cook Islands at the time of listing. Sanctioned vessels are frequently reflagged.

VesselSanctions-listedRussian shadow fleetIMO 9250531

Python

Also listed as / former names: Rozmarine

Oil Tanker
Flag: Cook Islands
First dated designation: 2024-11-25
Listed by OFAC SDN (US), UK Sanctions List, SECO (Switzerland)
0 list events tracked

Is Python sanctioned?

Yes. Python (IMO 9250531) is currently designated on OFAC SDN (US), SECO (Switzerland), UK Sanctions List under RUSSIA-EO14024, UKRAINE-EO13662, Russia (Sanctions) (EU Exit) Regulations 2019. The earliest dated designation we hold is 2024-11-25. It has also been listed under the name Rozmarine.

Vessel particulars (as published on sanctions lists)

IMO number

9250531

Source

Verified: copied from a structured field of an authoritative source

Source: Swiss SECO Sanctions List
Retrieved: 2026-09-29
Source date: 2025-06-03
Extractor: sanctions-group/1

Raw evidence

<target ssid="92295"><sanctions-set-id>77993</sanctions-set-id><object object-type="vessel"><identity ssid="92297" main="true"><name ssid="92298" name-type="primary-name" quality="good" lang="eng"><name-part order="1" name-part-type="whole-name"><value>Rozmarine</value></name-part></name></identity><justification ssid="92296">Transport crude oil or petroleum products that originate in Russia or are exported from Russia while practicing irregular and high-risk shipping practices as set out in the International Maritime Organisation General Assembly resolution A.1192(33)</justification><other-information ssid="92299">IMO number: 9250531</other-information></object><modification modification-type="listed" enactment-date="2025-06-02" publication-date="2025-06-03" effective-date="2025-06-03"/></target>

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2024-11-25
Extractor: sanctions-group/1

Raw evidence

IMO 9250531 (“PYTHON”) is 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, PYTHON is involved in carrying oil or oil products that originated in Russia from Russia to a third country.

+1 more

MMSI

314993000

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>314993000</idNumber>

Call sign

8P2523

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: 2024-11-25
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

Cook Islands

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2024-11-25
Extractor: sanctions-group/1

Raw evidence

<CurrentBelievedFlagOfShip>Cook Islands</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>Barbados</vesselFlag>

Tonnage

Not available

Year built

2004

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2024-11-25
Extractor: sanctions-group/1

Raw evidence

<YearBuilt>2004</YearBuilt>

Listed owner / operator

Ocean Waters Maritime Corp; Dream Islands Shipping LLC

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2024-11-25
Extractor: sanctions-group/1

Raw evidence

<CurrentOwnerOperator>Ocean Waters Maritime Corp</CurrentOwnerOperator>
<CurrentOwnerOperator> Dream Islands Shipping LLC</CurrentOwnerOperator>

Other / former names

Rozmarine

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 51682

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>51682</uid>
    <lastName>PYTHON</lastName>
    <sdnType>Vessel</sdnType>
    <remarks>(Linked To: OCEAN WATERS MARITIME CORPORATION)</remarks>
    <programList>
      <program>RUSSIA-EO14024</program>
      <program>UKRAINE-EO13662</program>
    </programList>
    <idList>
      <id>
        <uid>44212</uid>
        <idType>Vessel Registration Identification</idType>
        <idNumber>IMO 9250531</idNumber>
      </id>
      <id>
        <uid>44214</uid>
        <idType>MMSI</idType>
        <idNumber>314993000</idNumber>
      </id>
      <id>
        <uid>181669</uid>
        <idType>Secondary sanctions risk:</idType>
        <idNumber>See Section 11 of Executive Order 14024.</idNumber>
      </id>
      <id>
        <uid>183374</uid>
        <idType>Secondary sanctions risk:</idType>
        <idNumber>Ukraine-/Russia-Related Sanctions Regulations, 31 CFR 589.201 and/or 589.209</idNumber>
      </id>
    </idList>
    <vesselInfo>
      <callSign>8P2523</callSign>
      <vesselType>Crude Oil Tanker</vesselType>
      <vesselFlag>Barbados</vesselFlag>
    </vesselInfo>
  </sdnEntry>

Name on list: PYTHON
Programmes / regimes: RUSSIA-EO14024 · UKRAINE-EO13662
Identifiers: IMO: 9250531
Linked to (per list): OCEAN WATERS MARITIME CORPORATION
Remarks: (Linked To: OCEAN WATERS MARITIME CORPORATION)

SECO (Switzerland)Active listingID 92295

Source

Verified: copied from a structured field of an authoritative source

Source: SECO (Switzerland)
Retrieved: 2026-09-29
Source date: 2025-06-03
Extractor: seco-xml-parser

Raw evidence

<target ssid="92295"><sanctions-set-id>77993</sanctions-set-id><object object-type="vessel"><identity ssid="92297" main="true"><name ssid="92298" name-type="primary-name" quality="good" lang="eng"><name-part order="1" name-part-type="whole-name"><value>Rozmarine</value></name-part></name></identity><justification ssid="92296">Transport crude oil or petroleum products that originate in Russia or are exported from Russia while practicing irregular and high-risk shipping practices as set out in the International Maritime Organisation General Assembly resolution A.1192(33)</justification><other-information ssid="92299">IMO number: 9250531</other-information></object><modification modification-type="listed" enactment-date="2025-06-02" publication-date="2025-06-03" effective-date="2025-06-03"/></target>

Name on list: Rozmarine
Programmes / regimes: Situation in Ukraine
Listed on: 2025-06-03
Last updated: 2025-06-03
Identifiers: IMO: 9250531
Remarks: Transport crude oil or petroleum products that originate in Russia or are exported from Russia while practicing irregular and high-risk shipping practices as set out in the International Maritime Organisation General Assembly resolution A.1192(33) IMO number: 9250531

UK Sanctions ListActive listingID RUS2323

Source

Verified: copied from a structured field of an authoritative source

Source: UK Sanctions List
Retrieved: 2026-09-29
Source date: 2024-11-25
Extractor: uk-xml-parser

Raw evidence

<Designation>
    <LastUpdated>25/11/2024</LastUpdated>
    <DateDesignated>25/11/2024</DateDesignated>
    <UniqueID>RUS2323</UniqueID>
    <Names>
      <Name>
        <Name6>PYTHON </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: where shipping sanctions apply, a specified ship is prohibited from entering a port in the UK, may be given a movement or a port entry direction, can be detained, and will be refused permission to register on the UK Ship Register or have its existing registration terminated.  </OtherInformation>
    <UKStatementofReasons>
IMO 9250531 (“PYTHON”) is 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, PYTHON is involved in carrying oil or oil products that originated in Russia from Russia to a third country. 
</UKStatementofReasons>
    <ShipDetails>
      <Ship>
        <IMONumbers>
          <IMONumber>IMO9250531</IMONumber>
          <IMONumber>IMO9250531</IMONumber>
        </IMONumbers>
        <CurrentOwnerOperators>
          <CurrentOwnerOperator>Ocean Waters Maritime Corp</CurrentOwnerOperator>
          <CurrentOwnerOperator> Dream Islands Shipping LLC</CurrentOwnerOperator>
        </CurrentOwnerOperators>
        <CurrentBelievedFlagOfShips>
          <CurrentBelievedFlagOfShip>Cook Islands</CurrentBelievedFlagOfShip>
          <CurrentBelievedFlagOfShip>Cook Islands</CurrentBelievedFlagOfShip>
        </CurrentBelievedFlagOfShips>
        <TypeOfShipDetails>
          <TypeOfShip>Oil Tanker</TypeOfShip>
          <TypeOfShip>Oil Tanker</TypeOfShip>
        </TypeOfShipDetails>
        <YearsBuilt>
          <YearBuilt>2004</YearBuilt>
        </YearsBuilt>
      </Ship>
    </ShipDetails>
  </Designation>

Name on list: PYTHON
Programmes / regimes: Russia (Sanctions) (EU Exit) Regulations 2019
Listed on: 2024-11-25
Last updated: 2024-11-25
Identifiers: IMO: 9250531
IMO: 9250531
Remarks: IMO 9250531 (“PYTHON”) is 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, PYTHON is involved in carrying oil or oil products that originated in Russia from Russia to a third country. Shipping sanctions: where shipping sanctions apply, a specified ship is prohibited from entering a port in the UK, may be given a movement or a port entry direction, can be detained, and will be refused permission to register on the UK Ship Register or have its existing registration terminated. Sanctions imposed: Shipping sanctions: (see "Other information")

Linked parties (1)

Listed owner / operator (1)

Ocean Waters Maritime CorporationSanctions-listed party · ofacDerived

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.