Automatic source timelineGuayanilla, PRTimeline updated 13 Sept 2026

LNG Carrier Matthew - Coral Grounding; Guayanilla, PR

NOAA initial notification: “This morning at 0605 EST DARRP was notified by USCG Sector San Juan that the 920' LNG Carrier Matthew grounded on a reef while in bound to Guayanilla, PR at approximately 0500EST. The vessel's starboard bow was reported as aground. While CG was establishing an IC and activated […]”[1]

Latest included source report

Posted 22 Dec 2009

Latest source report

“Current Status: Coral triage efforts have concluded at the T/V Mathew grounding site and NOAA, DNER, and Responsible Party representatives have all demobilized for the Christmas holiday as of 12/22. During the last 7 days, a minimum of 4,400 corals were cached at the site and emergency triage is 90% complete with the remaining 10% being difficult to complete in an efficient […]” Current outcome is not independently verified by seahazards.[6]

NOAA report chronology

6 dated source records · 15 Dec 2009 to 22 Dec 2009
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NOAA incident record opened

Initial notification excerpt: “This morning at 0605 EST DARRP was notified by USCG Sector San Juan that the 920' LNG Carrier Matthew grounded on a reef while in bound to Guayanilla, PR at approximately 0500EST. The vessel's starboard bow was reported as aground. While CG was establishing an IC and activated salvage teams the the vessel was able to free herself by transferring ballast and bunker fuel aft. Three tugs were also on hand to assist. CG reported the vessel was free 0812EST. We have a NOAA contractor enroute to catch up with the CG investigators as well as to do an initial reef survey.”

NOAA approximate incident area; not a vessel track

Initial incident area only. Dates are NOAA postings, not a vessel track. Playback advances every 5 seconds.

Milestone 1 of 6: 15 Dec 2009. NOAA incident record opened. NOAA approximate incident area; not a vessel track

  1. NOAA incident record opened

    Initial notification excerpt: “This morning at 0605 EST DARRP was notified by USCG Sector San Juan that the 920' LNG Carrier Matthew grounded on a reef while in bound to Guayanilla, PR at approximately 0500EST. The vessel's starboard bow was reported as aground. While CG was establishing an IC and activated salvage teams the the vessel was able to free herself by transferring ballast and bunker fuel aft. Three tugs were also on hand to assist. CG reported the vessel was free 0812EST. We have a NOAA contractor enroute to catch up with the CG investigators as well as to do an initial reef survey.”

    NOAA approximate incident area; not a vessel track (17.961°, -66.758°)

  2. Initial Report and Update

    Source report excerpt: “920' LNG Carrier "Matthew" - Guayanilla, PR This morning at 0605 EST NOAA DARRP (T.Moore) was notified by USCG Sector San Juan that the 920' Liquid Natural Gas Carrier Matthew had grounded while inbound into the Eco Electrica Facility in Guayanilla, PR. The vessel was reported to have grounded in position 17 57.7N, 066 45.4W with a heading of 030. It was initially reported that the vessel was aground in its starboard bow. USCG also inquired if local NOAA staff might be available to respond on-scene in order to help prevent additional coral impacts during extraction. USCG also said they were establishing a formal response, standing up USCG salvage teams, and were requesting the vessel draw […]”

  3. Brief Update

    Source report excerpt: “Michael Nemeth (under contract to NOAA through Sea Ventures) is currently with the USCG aboard the vessel gathering information on the incident and subsequent salvage. Sea Ventures personnel have also located the grounding site and in a brief update back relayed that "significant coral damage had occurred" and that the site was "three times larger then the Port Stewart". The Port Stewart is are most recently significant tanker grounding in Puerto Rico and likely impacted 1500 to 2000 sq. meters of reef. More information to follow this evening.”

  4. Evening Report - December 17

    Source report excerpt: “- We had our contractor dive team on-site yesterday and today with DNER personnel. Yesterday they had five divers and conducted 4 dive cycles. They were able to flip a 1000+ corals, results from today's work are not yet available. - Reports from DNER personnel at the site indicate the footprint of the injury may be in excess of 8000 sq. meters and that coral triage alone could take 30 days. Many large corals are broken but still salvageable. A large number of very large corals have been reported as flipped and we are working to get some large lift bags to the scene in order to aid the righting of those corals. - Large berms of coral have also been reported and low relief sand channels […]”

  5. Evening Report - Dec 18

    Source report excerpt: “Arriving on scene last night, DARRP's Sean Griffin met with RP representative Greg Challenger from Polaris and contractors from CSA and Sea Ventures to discuss strategies for today's operations as well as more comprehensive emergency and primary restoration actions at the site. Today was the first day that Sean was in the water at the site. - 8 divers worked the site today, primarily caching corals and mapping the site - Several hundred corals were cached today bring the total to an estimated 1500 to 2000 - Many corals are still buried, especially in grooves that were infilled during the grounding. These corals can be difficult to locate and some require substantial movement of rubble to be […]”

  6. Update - Dec 22, 2009

    Source report excerpt: “Current Status: Coral triage efforts have concluded at the T/V Mathew grounding site and NOAA, DNER, and Responsible Party representatives have all demobilized for the Christmas holiday as of 12/22. During the last 7 days, a minimum of 4,400 corals were cached at the site and emergency triage is 90% complete with the remaining 10% being difficult to complete in an efficient manner. Report from Previous Day's Activities: On Monday, Dec. 21 the grounding site was divided up into different zones in an attempt to estimate the total number of corals cached, the substrate condition, quantify the amount of rubble available for restoration purposes, triage status, paint situation, etc. The excel […]”

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Details in the record

Source record
NOAA IncidentNews 8164[1]
Dated source updates
5[2][3][4][5][6]

Reading this account

Automatically assembled from NOAA's incident record and substantive Public Affairs or Situation Update posts. Dates are NOAA posting dates, which can differ from when events happened or original reports were published. Excerpts retain the source's wording and uncertainty. This account does not independently establish the cause, current outcome or safety of the area. NOAA coverage is selective; missing updates do not mean nothing happened. The map shows one approximate incident area, not a vessel track.

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Original sources

Timeline updated 13 Sept 2026. New reports and changes to this NOAA incident are incorporated automatically; this is not a live incident feed.

  1. 1.LNG Carrier Matthew - Coral Grounding; Guayanilla, PRNOAA Office of Response and Restoration · 15 Dec 2009
  2. 2.Initial Report and UpdateNOAA IncidentNews · source report archive · 15 Dec 2009
  3. 3.Brief UpdateNOAA IncidentNews · source report archive · 15 Dec 2009
  4. 4.Evening Report - December 17NOAA IncidentNews · source report archive · 17 Dec 2009
  5. 5.Evening Report - Dec 18NOAA IncidentNews · source report archive · 18 Dec 2009
  6. 6.Update - Dec 22, 2009NOAA IncidentNews · source report archive · 22 Dec 2009

Related records in our archive

Original source text, preserved separately from this account.

NOAAORR-8164 NOAA response record
LNG Carrier Matthew - Coral Grounding; Guayanilla, PR.
Guayanilla, PR.
1. This morning at 0605 EST DARRP was notified by USCG Sector San Juan that the 920' LNG Carrier Matthew grounded on a reef while in bound to Guayanilla, PR at approximately 0500EST. The vessel's starboard bow was reported as aground. While CG was establishing an IC and activated salvage teams the the vessel was able to free herself by transferring ballast and bunker fuel aft. Three tugs were also on hand to assist. CG reported the vessel was free 0812EST. We have a NOAA contractor enroute to catch up with the CG investigators as well as to do an initial reef survey.
2. THREAT: OTHER. TAGS: CORAL, GROUNDING.
3. POSITION 17.961N 066.758W. NOAA INCIDENTNEWS 8164: https://incidentnews.noaa.gov/incident/8164
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