Exhibit 15.4

Our Vessels

The table below shows the vessels chartered or owned by us and Transpetro as of December 31, 2021:

	Vessel	Owned / Chatered	Capacity (deadweight tonnage)
	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
	Dan Cisne	Chartered	59,336
	Dan Sabiá	Chartered	59,317
	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
	Jorge Amado	Owned	2,537
	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
	Sestrea	Chartered	162,756
	Storviken	Chartered	152,013
	Zumbi dos Palmares	Owned	156,492
Subtotal Owned/ Chartered by Transpetro		37	3,603,017

	Vessel	Owned / Chatered	Capacity (deadweight tonnage)
	Alba	Chartered	113,782
	Alessandro Volta	Chartered	29,300
	Alhena	Chartered	52,420
	Altair	Chartered	50,583
	Amazon Victory	Chartered	72,412
	Amazon Virtue	Chartered	72,412
	Anavatos Ii	Chartered	115,459
	Anfa	Chartered	47,975
	Anikitos	Chartered	50,082
	Aquila	Chartered	319,330
	Aragona	Chartered	319,319
	Avon	Chartered	49,999
	Bachata	Chartered	50,179
	Bolero	Chartered	50,094
	Brasil 2014	Chartered	155,709
	Bro Developer	Chartered	14,737
	Brunswick	Chartered	45,902
	BW Prince	Chartered	54,368
	BW Princess	Chartered	54,368
	Clearocean Magic	Chartered	49,995
	Clyde	Chartered	49,999
	Cobra	Chartered	54,501
	DHT Colt	Chartered	319,713
	DHT Stallion	Chartered	319,713
	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
	Elandra Maple	Chartered	49,999
	Elandra Redwood	Chartered	49,999
	Elandra Willow	Chartered	49,999
	Elektra	Chartered	52,422
	Elka Leblon	Chartered	154,846
	Elka Parana	Chartered	155,010
	Endless Summer	Chartered	49,999
	Epic Baluan	Chartered	7,187
	Epic Boracay	Chartered	6,519
	Falcon Iris	Chartered	50,927
	Falcon Sextant	Chartered	50,994
	Flumar Brasil	Chartered	51,188
	Forte De Copacabana	Chartered	8,843
	Forte De Sao Luiz	Chartered	8,250
	Forties	Chartered	113,782
	Four Wind	Chartered	115,727
	Fulmar	Chartered	115,605
	Grand	Chartered	50,129
	Horizon Aphrodite	Chartered	49,996
	Horizon Armonia	Chartered	50,326
	Horizon Ekavi	Chartered	51,099
	Hyde	Chartered	46,858
	Leonardo B	Chartered	9,352
	Luigi Lagrange	Chartered	29,191
	Maersk Cebu	Chartered	49,919
	Maersk Crete	Chartered	49,919
	Maersk Cyprus	Chartered	49,919
	Maersk Kalea	Chartered	29,999
	Marlin	Chartered	17,043
	Motivator	Chartered	54,901
	Nave Atria	Chartered	49,992
	Nave Jupiter	Chartered	49,999
	Nave Orbit	Chartered	49,999
	Nave Synergy	Chartered	309,741
Ocean Electra	Chartered	47,377
Ocean Phoenix	Chartered	108,940
Ocean Spirit	Chartered	49,995
Ocean Venture	Chartered	49,995
Paccha	Chartered	50,091
Pacific Trader	Chartered	16,934
Pine Meadow	Chartered	50,171
Ras Maersk	Chartered	34,999
Rio 2016	Chartered	155,709
Robert Maersk	Chartered	34,801
Romoe Maersk	Chartered	34,806
Salsa	Chartered	47,991
Samba	Chartered	19,117
San Andres Iv	Chartered	3,557
Simone	Chartered	323,182
Sophia Kosan	Chartered	9,999
Stena Premium	Chartered	65,055
Stena Progress	Chartered	65,125
Synnove Knutsen	Chartered	152,868
Thames	Chartered	49,999
Trent	Chartered	49,999
Zouzou	Chartered	50,651
Subtotal Chartered by Us		86	6,895,433
TOTAL		123	10,498,450