| We've got a GPS for tracking, and a black box with a pinger so we can find the rocket no matter where it lands. |
| We couldn't take the boat into the shallows near the reef because our sonar pinger was broken. |
| Australian ship Ocean Shield was towing a US Navy pinger locator device through the ocean depths off Perth. |
| In my opinion, the pinger locators are no longer necessary to finding the black box. |
| The scientist attached a pinger to the carapace of the sea turtle to track its migration. |
| The second camera run experienced initial difficulties when the second pinger available on the ship turned out not to be an oceanographic pinger but rather a location beacon. |
