[MX] Bill of Lading — Sea (Carta Porte Transporte Marítimo)

What is a Carta Porte Marítimo?

A Carta Porte for maritime transport certifies the legal transport of goods by vessel in Mexico. Required by SAT for any sea cargo movement. Brinta embeds the CartaPorte 3.1 complement automatically.

Field	Value
`invoice_type`	`transport`
`document_type`	`bill of lading sea`
`e_invoice`	`true`
`currency`	`MXN`

Key Differences from Road

Feature	Road	Sea
`transportation_data`	`date_time` + `distance`	`date_time` + `distance` + `traffic_type`
`vehicle.categories[]`	Truck fields	Vessel fields
`vehicle.type`	Not required	Set to `sea`
Station/port codes	Not used	Not required — use address instead

Field by Field

`senders[].company.transportation_data`

Field	Required	What to send
`date_time`	Yes	Departure datetime ISO 8601 from the port of origin.
`traffic_type`	Yes	SAT `c_NavegacionTrafico` code. Classifies the maritime route type.
`distance`	Yes	Distance in km between origin and destination ports.

`traffic_type` values

Value	Description	When to use
`01`	Cabotaje	Transport between Mexican ports (domestic). Most common.
`02`	Altura	International maritime transport.

`beneficiaries[].company.transportation_data`

Only date_time is needed for the destination. No traffic_type or distance.

`transportation_companies[]`

Maritime transport typically has one figure — the shipping company (type: "02" Propietario). Include vehicle_type inside transportation_data.

For the shipping company (type: "02"), only RFC is needed in tax_registrations — no license number required.

`vehicle` — Vessel

Set vehicle.type to sea. All attributes sent as categories[] entries.

Required fields

`list` value	What to send in `code`	SAT field
`vessel type`	SAT `c_ConfigMaritima` code	`TipoEmbarcacion`
`vessel plate`	Vessel registration / matricula number	`Matricula`
`OMI number`	7-digit IMO number assigned to the vessel	`NumeroOMI`
`vessel country`	Country of registration ISO code (e.g. `MX`)	`NacionalidadEmbarc`
`gross tonnage`	Gross tonnage of the vessel in tons	`UnidadesDeArqBruto`
`cargo type`	SAT `c_ClaveTipoCarga` code	`TipoCarga`
`shipping agent`	Full name of the shipping agent company	`NombreAgenteNaviero`
`shipping authorization number`	Shipping agent authorization number	`NumAutorizacionNaviero`

Optional fields

`list` value	What to send in `code`	SAT field
`insurance name`	Insurer name	`NombreAseg`
`insurance policy number`	Policy number	`NumPolizaSeguro`
`voyage number`	Voyage number	`NumViaje`
`bill of lading number`	Bill of lading number	`NumConocEmbarc`
`container type`	SAT `c_ContenedorMaritimo` code	`TipoContenedor`
`container plate`	Container identification number	`MatriculaContenedor`
`seal number`	Container seal number	`NumPrecinto`

Include container fields when goods are shipped in containers — recommended for full traceability.

Full Example Payload

{
  "supplier_company_id": "{{company_id}}",
  "invoice_type": "transport",
  "document_type": "bill of lading sea",
  "invoice_date": "2025-09-03",
  "export_reason": "01",
  "e_invoice": true,
  "currency": "MXN",
  "reason": "G03",
  "senders": [
    {
      "company": {
        "name": "REMITENTE EJEMPLO S.A. DE C.V.",
        "type": "business",
        "address": {
          "address_line_1": "Av. Puerto 1",
          "state": "MX-VER",
          "country": "MX",
          "postal_code": "91700"
        },
        "tax_registrations": [
          { "type": "RFC", "number": "REM930215S87", "level": "country", "location": "MX" }
        ],
        "transportation_data": {
          "date_time": "2025-09-03T08:00:00",
          "traffic_type": "01",   // 01 = cabotaje (domestic between MX ports)
          "distance": 1200.0
        }
      }
    }
  ],
  "beneficiaries": [
    {
      "company": {
        "name": "DESTINATARIO EJEMPLO S.A. DE C.V.",
        "type": "business",
        "address": {
          "address_line_1": "Blvd. Puerto 200",
          "state": "MX-TAB",
          "country": "MX",
          "postal_code": "86000"
        },
        "tax_registrations": [
          { "type": "RFC", "number": "DES890423H71", "level": "country", "location": "MX" }
        ],
        "transportation_data": {
          "date_time": "2025-09-06T14:00:00"
          // Only date_time needed for destination
        }
      }
    }
  ],
  "vehicle": {
    "type": "sea",
    "categories": [
      { "code": "01",                    "list": "vessel type" },              // SAT c_ConfigMaritima
      { "code": "MX-001",                "list": "vessel plate" },
      { "code": "1234567",               "list": "OMI number" },               // 7-digit IMO number
      { "code": "MX",                    "list": "vessel country" },
      { "code": "5000",                  "list": "gross tonnage" },
      { "code": "01",                    "list": "cargo type" },               // SAT c_ClaveTipoCarga
      { "code": "AGENTE NAVIERO S.A.",   "list": "shipping agent" },
      { "code": "AUTH-001",              "list": "shipping authorization number" },
      { "code": "QUALITAS",              "list": "insurance name" },
      { "code": "QUA-123456",            "list": "insurance policy number" },
      { "code": "VOY-2025-001",          "list": "voyage number" },
      { "code": "BL-2025-001",           "list": "bill of lading number" },
      { "code": "CONT01",                "list": "container type" },           // SAT c_ContenedorMaritimo
      { "code": "CONT-ABC123",           "list": "container plate" },
      { "code": "SEAL-001",              "list": "seal number" }
    ]
  },
  "transportation_companies": [
    {
      "company": {
        "name": "NAVIERA EJEMPLO S.A. DE C.V.",
        "type": "02",                  // 02 = Propietario — the shipping company
        "address": {
          "address_line_1": "Av. Puerto 5",
          "state": "MX-VER",
          "country": "MX",
          "postal_code": "91700"
        },
        "tax_registrations": [
          { "type": "RFC", "number": "NAV010101CD5", "level": "country", "location": "MX" }
          // Shipping company — RFC only, no license number needed
        ],
        "transportation_data": { "vehicle_type": "01" }
      }
    }
  ]
}

Common Mistakes

Mistake	What happens	Fix
`traffic_type` missing in `senders`	SAT validation error	Always required for sea transport in origin location
`distance` included in beneficiaries	Brinta validation error	Only include `distance` in `senders`
`OMI number` wrong digit count	SAT rejects the document	Must be exactly 7 digits
Container fields omitted for containerized cargo	Incomplete CFDI	Include `container type`, `container plate`, `seal number` when applicable
`vessel type` not a valid `c_ConfigMaritima` code	SAT validation error	Use the SAT catalog code, not a free-text description

Updated 4 days ago