NOAA navigation response teams improve charts for ships transiting Miami and San Francisco   Leave a comment

Coast Survey’s navigation response teams, which are 3-person hydrographic survey teams on small boats, have made a fast start on this year’s survey season.

In Florida, where Coast Survey is preparing to issue a “new and improved” Miami Harbor Chart 11468 to alleviate vessel congestion at the Port of Miami, a navigation response team finished final hydrographic surveys to ensure the new chart has the latest and most accurate depth measurements around several areas identified as critical within the port. In just ten days, team members Erik Anderson, James Kirkpatrick, and Kurt Brown acquired, processed, and submitted the multibeam survey data covering 64 nautical miles.

NRT2 Miami survey

NOAA Navigation Response Team 2 just finished up this survey in Miami

The Biscayne Bay Pilots and others requested the new chart, which is reconstructing old charts in order to provide large-scale coverage of the entire precautionary area where vessels congregate to await pilotage and commit to an approach course to the channel. Updating the chart information and expanding chart coverage will alleviate a navigation safety risk for the world’s busiest cruise port, and will protect endangered coral reefs from inadvertent anchorages.

One interesting side note on the Miami survey… The team found a sunken car, which a Miami Police Department Marine Patrol/Underwater Recovery Detail dive team subsequently investigated. It appears to have been there for approximately 20 years, divers said. We understand they retrieve around 50 cars a year, but have never seen one this old. They plan to raise it later this month. Any bets on make and model?

NOAA navigation response team found this submerged auto at PortMiami

NOAA Navigation Response Team 2 found this submerged auto at Port of Miami

Meanwhile, in San Francisco Bay, another navigation response team is planning a special hydrographic survey to update NOAA charts 18656 and 18657. The action comes as a follow up to a July 2013 grounding by a tug and a barge carrying 80k barrels of crude oil in Benicia Anchorage 22, near Carquinez Strait, San Francisco. After the accident, team members Laura Pagano, Ian Colvert, and Edmund Wernicke conducted a reconnaissance hydrographic survey to determine if an uncharted obstruction caused the grounding. The survey determined that shoaling was the culprit and the evidence indicated that a charted shoal has been creeping through the Benicia Anchorages towards the federal shipping channel at Carquinez Strait. Last month, the U.S. Coast Guard requested an extensive survey to determine the extent and significance of shoaling in the Benicia Anchorages, and the team is planning to conduct the survey shortly.

NRT6 survey

NOAA Navigation Response Team 6 conducted a recon survey of area where a tanker barge went aground

NOAA navigation manager Gerry Wheaton suspects heavy sediment runoff from rains over the years have altered the sea floor in navigable areas near the Strait. While the initial NOAA recon survey provided information to notify mariners of the dangers, conducting a full bottom survey to update NOAA nautical charts will provide additional detailed depth information necessary to safely navigate the area.

This blog is monitored during regular working hours (8 am to 5 pm, ET), and we will moderate comments as soon as possible. Approval of comments offered during evenings or weekends may be delayed.

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: