Boaters warned against sailing on Hartbeespoort dam

The mats currently extend over roughly 30% of the dam.

On Saturday night, volunteers from the NSRI’s Station 25 at Hartbeespoort dam took five hours to extricate 30 recreational boaters from the water hyacinth mats.

The Institute says the water hyacinth causes a substantial danger to small craft users on the dam and should never be entered by any craft.

NSRI Hartbeespoort Station Commander Arthur Crewe says the water hyacinth mats float on the dam surface and are wind-driven.

“We are finding that some recreational boaters are entering the water hyacinth mats when they are blown between them and their launching site.

“They try to return to the same launch site by navigating through the water hyacinth and become trapped.

“The boaters must not enter the water hyacinth mats while trying to get back to their launch site, but rather motor to a different launch site where the water hyacinth does not block their course.”

Crewe says boaters should rather call friends or family to fetch them by car rather than risk entering the water hyacinth to try and get back to their launch site.

“If boaters do try to navigate through the water hyacinth, our experience is that they become trapped as the hyacinth entangles their propeller. 

“We have also responded to several boaters who have damaged their propellers after hitting submerged objects that could not be seen under the water hyacinth mats.

“As summer progresses, the water hyacinth will grow, covering a larger area and making this problem more severe. Under no circumstances should boaters try to navigate through the water hyacinth.

“By doing this, they are putting their lives at risk. Rescuing people in boats entrapped by water hyacinth is a complex operation and will not be necessary if people do not enter the water hyacinth mats.”

The NSRI has encouraged owners of boats to make sure that they are carrying the standard emergency equipment but also have drinking water, food, space blankets and warm clothing should they become trapped by the drifting mats.


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