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World Shipping DirectoryCompanies · Ships · Fleets

A public reference property of Baalvion

Open data · every figure carries its source

World Shipping DirectoryCompanies · Ships · Fleets

petroleum industry

Unocal Corporation

Dissolved 2005

Headquarters: Los Angeles
Founded: 1890
Employees: —

Official website

Ships in this registry

Counted from individual vessel records · Wikidata

Reported fleet size

—

No published figure available

Container capacity

—

Not a ranked container line

Gross tonnage on record

—

Summed over 0 ships reporting tonnage

In brief

What Unocal Corporation is

Full article ↗

Union Oil Company of California, and its holding company Unocal Corporation, together known as Unocal was a major petroleum explorer and marketer in the late 19th century, through the 20th century, and into the early 21st century. It was headquartered in El Segundo, California, United States.
Unocal was involved in domestic and global energy projects. Unocal was one of the key players in the CentGas consortium, which attempted to build the Trans-Afghanistan Pipeline to run from the Caspian area, through Afghanistan, to the Indian Ocean, at a time after the Taliban siege of Kabul in 1996.

Origin

Who founded it

Unocal Corporation was founded in 1890 by one named founder on record. Portraits are shown only where a freely licensed photograph exists and its photographer is known.

Founder

Thomas R. Bard

1841–1915

American politician (1841-1915)

Photo: Steckel · Public domain · file

Corporate profile

Identity and registration

Legal name: —
Industry: petroleum industry
Legal form: —
Country of registration: United States
Headquarters: Los Angeles
Formed in: —
Founded: 1890
Dissolved: 2005
Employees: —
Head office coordinates: 34.0522, -118.2437

Ships on record here: 1
Vessel types operated: 1
Flag states used: 1
Average vessel age: 49.0 years
Oldest vessel on record: 1977
Newest vessel on record: 1977
Largest vessel by tonnage: —
Average tonnage: —
Market share: —
Parent company: —
Alliance: —
Record source: wikidata
Last refreshed: 2026-09-05

Fleet on record

What this company sails

Composition of the 1 vessels this registry attributes to Unocal Corporation. Bars are true proportions of that set, not of the company's full fleet.

By vessel type

Rig / offshore unit1

By flag state

United States1

Delivery history

10-year fleet record

Ships delivered in each of the last 10 years, counted from the recorded build year of vessels attributed to this company, with the running total of its fleet on record. No deliveries fall inside this window — this company’s vessels on record were all built earlier.

Year	Gross tonnage added	Fleet on record
2017	—	1
2018	—	1
2019	—	1
2020	—	1
2021	—	1
2022	—	1
2023	—	1
2024	—	1
2025	—	1
2026	—	1

Vessel records

Ships on record

1 vessels

Ship	IMO	Type	Flag	Built	Gross tonnage	Deadweight	Length	Builder
Drillship Seacrest	7423823	Rig / offshore unit	United States	1977	—	—	112.0 m	—

Ships in registry counts individual vessel records attributed to the company here. Reported fleet is the company’s published total. They measure different things and are shown separately on purpose.

In context

How Unocal Corporation compares

Counts over companies and vessels actually held in this directory — not over the world fleet, which is larger. Nothing here is estimated.

With 1 vessels attributed to it here, Unocal Corporation is the 492nd largest of the 965 operators in this directory that hold at least one ship on record, against a median of 2 across that group. That is a count of individually identified hulls, not the company’s published fleet size — the two are different measurements and both are shown above where available.

United States is the country of registration for 144 commercial operators in this directory, among which Unocal Corporation ranks 55th by ships on record. Between them those companies hold 435 vessels here. 1 of them carry a published container-capacity ranking. See every operator registered in United States.

Founded in 1890, Unocal Corporation is 136 years old. This directory holds 43 operators founded within five years either side of that date, whose median fleet on record is 1 ships. The median founding year across all commercial operators here is 1966, and the oldest on record dates to 1514.