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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

Rig / offshore unit

JOIDES Resolution

IMO 7423081MMSI 209489000Call sign 5BMM3CyprusBuilt 1978

Operator on record: Siem Offshore AS

Photo: Integrated Ocean Drilling Program U.S. Implementing Organization (IODP-USIO) · Attribution · file

Largest in this registry

#35,391

of 84,014 with a recorded tonnage

Largest rig / offshore unit

#384

of 856 of this type with a recorded tonnage

Fleet rank

—

No operator attributed to this ship

In brief

About JOIDES Resolution

Full article ↗

The riserless research vessel JOIDES Resolution (Joint Oceanographic Institutions for Deep Earth Sampling), often referred to as the JR, was one of the scientific drilling ships used by the International Ocean Discovery Program (IODP), an international, multi-drilling platform research program. JOIDES Resolution was previously the main research ship used during the Ocean Drilling Program (ODP) and was used along with the Japanese drilling vessel Chikyu and other mission-specific drilling platforms throughout the Integrated Ocean Drilling Program. She was the successor of Glomar Challenger.
The ship was first launched in 1978 as Sedco/BP 471, an oil exploration vessel. It was converted for scientific use 6 years later in 1984 and began working as the main research ship for ODP in January 1985. JOIDES Resolution was modernized during 2007–2008 and returned to active service in February 2009 following an extensive renovation of her laboratory facilities and quarters.
Texas A&M University (TAMU) acted as manager and science operator of JOIDES Resolution as a research facility for IODP. The JOIDES Resolution Science Operator (JRSO) was funded through a cooperative agreement with the US National Science Foundation (NSF), with international contributions from 23 Program member countries. The JOIDES Resolution ended operations in August 2024 following the non-renewal of NSF support.

Vessel particulars

Identification and dimensions

Every value is as recorded in the source. Blanks are values the source does not hold — none is estimated from a sister ship or a class average.

Identification

IMO number: 7423081
IMO check digit: Valid
MMSI: 209489000
Call sign: 5BMM3
Flag state: Cyprus
Port of registry: —
Vessel class: —
Status: in service

Construction

Type: Rig / offshore unit
Builder: Halifax Shipyard
Yard number
Launched: —
Year built: 1978
Designed to carry: —
Owner: Overseas Drilling Limited, a subsidiary of Siem Offshore AS
Operator on record: Siem Offshore AS

Measurements

Gross tonnage: 10,282
Net tonnage: —
Displacement: —
Length overall: 143.0 m
Beam: 70.0 m
Draft: 21.7 m
Service speed: 10.5 kn

In context

How JOIDES Resolution compares

Every figure in this section is a count, a rank or a percentile over vessels actually held in this registry — not over the world fleet, which is larger. Nothing here is estimated.

At 10,282 gross tons, JOIDES Resolution is the 35,391st largest of the 84,014 vessels in this registry that report a tonnage. The median across that set is 5,994 GT, so this hull is about 1.7 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 911 rig / offshore units held here, it ranks 384th by tonnage — larger than 55% of that group. Their median tonnage is 9,254 GT, and the largest tenth begin at 51,732 GT. The flag most often flown by this group is Liberia (179 ships). The yard that appears most often against it is Hanwha Ocean, with 27 hulls on record.

Cyprus is the country of registry for 1,418 vessels in this directory, of which JOIDES Resolution is the 851st largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (915 ships), and the median vessel measures 15,666 GT. Browse every ship flagged Cyprus.

Narrowing to both dimensions at once, this registry holds 2 rig / offshore units flying the Cyprus flag, of which none is larger than JOIDES Resolution.

JOIDES Resolution was built in 1978, making it 48 years old. It is one of 1,698 hulls in this registry delivered that year, a cohort whose median tonnage is 3,556 GT; within it this ship is the 491st largest. Across the whole of the 1970s the registry holds 17,331 vessels, median 2,774 GT. The median build year across the entire registry is 1995.

The registry attributes 20 vessels to Halifax Shipyard, with a median tonnage of 253 GT, delivered between 1950 and 2014. See the rest of that yard’s output.

At 143.0 m overall, JOIDES Resolution is 69.0 m longer than the 74.0 m median for rig / offshore units on record, with a beam of 70.0 m and a draft of 21.7 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 7423081 this registry holds 43 other vessels, whose median build year is 1977 and which range from 1975 to 1982. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1978.

Its IMO number, 7423081, carries its own check digit. The first six digits are weighted seven down to two and summed — 7×7 + 4×6 + 2×5 + 3×4 + 0×3 + 8×2 = 111 — and the last digit of that total, 1, must equal the seventh digit, 1. It does, so this number is well formed.

Nearest by tonnage among rig / offshore units

Ship	Built	Gross tonnage
Idun	2013	10,343
Odin	2013	10,343
Shelf Drilling Scepter	2008	10,339
JOIDES Resolution (this ship)	1978	10,282
Velesto Naga 6	2014	10,201
Velesto Naga 7	2015	10,201
Deep Driller 5

About JOIDES Resolution

Identification and dimensions

How JOIDES Resolution compares

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