From this article: https://oilnow.gy/news/cgx-self-styles-berbice-project-as-deep-water-port-but-jagdeo-says-it-isnt/ "Vice President of Guyana, Dr. Bharrat Jagdeo said a facility being developed by CGX Energy in the South American country, styled by the company as the ‘Berbice Deep-Water Port’, “was never a deep-water port.” “Deep-water port would be a port that can bring in the massive vessels. In the Berbice River, that location, it’s hard to do a deepwater port,” the Vice President stated. “Deep-water facility would mean that you can bring in like the Panamax vessels…”
"A Panamax vessel is the largest size of vessel that can transit the Panama canal. According to the American Association of Port Authorities, a Panamax vessel has a draught of 12 metres (m). CGX’s undertaking, according to reports on its website, is meant to accommodate a draught of 7m in a basin that’s 8.5m deep. US maritime agencies define deepwater ports as structures used to facilitate transport, storage and handling of crude, but they do not specify a required draught."
"Jagdeo said a proper deep-water port would carry a cost of more than US$1 billion to develop. In contrast, CGX Energy has spent a few tens of millions on this facility."
This article lists the major ports of Guyana and does not mention the CGX port but #7 is listed as a being built as a deepwater port with the major investor being the deep pockets of the UAE and designed to accomodate huge ships. It appears it will be very costly and be completed next year and would be the only deepwater port in country.
The Major Ports of Guyana
https://www.marineinsight.com/know-more/ports-in-guyana/