Exhibit 15.4
OUR VESSELS
The table below shows the vessels chartered or owned by us and Transpetro as of December 31, 2024:
| Vessel | Owned / Chatered | Capacity (deadweight tonnage) | |
| Owned/ Chartered by Transpetro | Abdias Nascimento | Owned | 157,055 |
| Andre Rebouças | Owned | 156,523 | |
| Angra dos Reis | Chartered | 105,165 | |
| Anita Garibaldi | Owned | 72,786 | |
| Barbosa Lima Sobrinho | Owned | 5,093 | |
| Carlos Drummond de Andrade | Owned | 114,366 | |
| Castro Alves | Owned | 114,562 | |
| Celso Furtado | Owned | 48,502 | |
| Darcy Ribeiro | Owned | 5,097 | |
| Dragão do Mar | Owned | 156,502 | |
| Fortaleza Knutsen | Chartered | 106,316 | |
| Garrincha | Owned | 114,441 | |
| Gilberto Freyre | Owned | 2,573 | |
| Henrique Dias | Owned | 156,505 | |
| João Cândido | Owned | 156,980 | |
| José Alencar | Owned | 48,573 | |
| José do Patrocínio | Owned | 156,726 | |
| Lucio Costa | Owned | 5,097 | |
| Machado de Assis | Owned | 156,829 | |
| Madre de Deus | Chartered | 105,283 | |
| Marcílio Dias | Owned | 156,541 | |
| Milton Santos | Owned | 156,629 | |
| Olavo Bilac | Owned | 114,700 | |
| Oscar Niemeyer | Owned | 5,079 | |
| Portinari | Owned | 114,435 | |
| Recife Knutsen | Chartered | 105,560 | |
| Rio Grande | Chartered | 105,224 | |
| Rômulo Almeida | Owned | 48,449 | |
| São Luís | Chartered | 105,212 | |
| São Sebastião | Chartered | 105,190 | |
| Sérgio Buarque de Holanda | Owned | 48,573 | |
| Zumbi dos Palmares | Owned | 156,492 | |
| Subtotal Owned/Chartered by Transpetro | 32 | 3,167,058 | |
| Chartered by us | Aitolos | Chartered | 115,521 |
| Aktea | Chartered | 51,371 | |
| Alessandro Volta | Chartered | 29,191 | |
| Altair | Chartered | 50,583 | |
| Amazon Victory | Chartered | 72,412 | |
| Aquila | Chartered | 319,330 | |
| Arctos | Chartered | 49,999 | |
| Atlantic Pride | Chartered | 50,614 | |
| Brasil 2014 | Chartered | 155,709 | |
| Bw Pampero | Chartered | 53,503 | |
| Clarity | Chartered | 49,999 | |
| Clean Justice | Chartered | 44,998 | |
| Clearocean Melody | Chartered | 49,995 | |
| Clyde | Chartered | 49,999 | |
| Cumbia 1 | Chartered | 50,213 | |
| Donoussa | Chartered | 299,999 | |
| Eagle Cambe | Chartered | 155,414 | |
| Eagle Colatina | Chartered | 155,362 | |
| Eagle Crato | Chartered | 152,000 | |
| Eagle Paraiba | Chartered | 105,153 | |
| Eagle Paraiso | Chartered | 153,264 | |
| Eagle Parana | Chartered | 105,048 | |
| Eagle Passos | Chartered | 152,000 | |
| Eagle Paulinia | Chartered | 153,352 | |
| Eagle Petrolina | Chartered | 153,226 | |
| Eco Energia I | Chartered | 4,200 | |
| Eden | Chartered | 49,999 | |
| Elandra Star | Chartered | 49,999 | |
| Elka Leblon | Chartered | 154,846 | |
| Elka Parana | Chartered | 155,010 | |
| Epic Baluan | Chartered | 7,187 | |
| Epic Beata | Chartered | 6,513 | |
| Epic Shikoku | Chartered | 8,993 | |
| Evo | Chartered | 50,044 | |
| Flumar Brasil | Chartered | 51,188 | |
| Forte De Copacabana | Chartered | 8,834 | |
| Forte De Sao Luiz | Chartered | 8,250 | |
| Fraternity | Chartered | 157,667 | |
| Gavi C | Chartered | 37,606 | |
| Honesty | Chartered | 50,384 |
| Chartered by us | Horizon Aphrodite | Chartered | 49,996 |
| Horizon Armonia | Chartered | 49,999 | |
| Horizon Theano | Chartered | 50,268 | |
| Horizon Theoni | Chartered | 49,999 | |
| Isabella M Ii | Chartered | 49,999 | |
| Kamilla Kosan | Chartered | 11,738 | |
| Lambada Spirit | Chartered | 154,036 | |
| Luigi Lagrange | Chartered | 29,191 | |
| Maersk Katalin | Chartered | 39,708 | |
| Maersk Kiera | Chartered | 39,724 | |
| Maersk Malaga | Chartered | 51,544 | |
| Maersk Tampa | Chartered | 49,834 | |
| Manta Anadolu | Chartered | 28,447 | |
| Marlin | Chartered | 17,043 | |
| Mersey | Chartered | 49,999 | |
| Nave Atria | Chartered | 49,992 | |
| Othoni | Chartered | 14,999 | |
| Pacific Azur | Chartered | 49,997 | |
| Pacific Jasper | Chartered | 49,998 | |
| Pacific Onyx | Chartered | 49,996 | |
| Pacific Zircon | Chartered | 49,995 | |
| Pine Olia | Chartered | 49,999 | |
| Ps Singapore | Chartered | 49,999 | |
| Queen Of Doria | Chartered | 46,590 | |
| Rio 2016 | Chartered | 155,709 | |
| Samba | Chartered | 19,117 | |
| San Andres Iv | Chartered | 3,557 | |
| Sealoader 2 | Chartered | 3,100 | |
| Sinndar | Chartered | 54,596 | |
| Sti Jardins | Chartered | 49,990 | |
| Torm Genesis | Chartered | 119,456 | |
| Torm Maren | Chartered | 109,672 | |
| Torm Mathilde | Chartered | 109,672 | |
| Tweed | Chartered | 49,999 | |
| Vialli | Chartered | 44,999 | |
| Vorias | Chartered | 38,375 | |
| Witham | Chartered | 49,999 | |
| Xt Honesty | Chartered | 18,1880 | |
| Subtotal Chartered by us | 78 | 5,702,186 | |
| TOTAL | 110 | 8,869,244 | |