Tisbury’s first responders had a complicated Sunday afternoon with emergencies both on land and in the water, followed by a Monday-morning incident that moved from street to sea and back again.

There were no reported injuries from any of the incidents, Tisbury fire chief Greg Leland told the Gazette.

Around midday Sunday, a speeding pickup truck went off State Road near Lambert’s Cove Road and snapped a power pole, which landed partially on top of the vehicle, Chief Leland said.

“The individual was driving at a high rate of speed,” the fire chief said, describing an active crash scene on Sunday that closed State Road for about four hours.

“The driver was fine. She was checked out and released,” Chief Leland said.

The Massachusetts State Police, which enforces the law on state-owned roadways, did not immediately return a Gazette call requesting information on how the driver was cited for causing the midday collision.

Later that day, at 12:15 p.m., amid heavy winds, a 19-foot sailboat capsized on Lake Tashmoo, Tisbury harbormaster John Crocker told the Gazette.

Deputy shellfish constable Nelson Sigelman, with the help of a willing bystander, assisted the three sailors to safety and secured the disabled vessel, Mr. Crocker said.

“He happened to be in the shellfish skiff on the pier at the Tashmoo landing when this occurred, [and] grabbed somebody else who was there who was capable,” the harbormaster said. “They went out there and got the three boaters aboard the skiff.”

After delivering the rescued sailors to the boat landing, Mr. Sigelman and his helper tied the capsized 1985 O’Day sloop to a mooring, Mr. Crocker said.

While continuing to work the State Road crash scene, the fire department also sent a crew to Tashmoo to render aid, Chief Leland said.

“It was a very busy day in a short period, and we had the car show at the same time, and there was a firefighter funeral in West Tisbury at two o’clock,” Chief Leland said. “It was a very busy Sunday.”

Monday morning, it was the Tisbury police department’s turn to handle a wayward truck — this one a multi-ton Ford dump truck that plunged into Vineyard Haven Harbor.

“The truck lost its brakes and went down Beach street extension and into the harbor,” police chief Christopher Habekost said.

Several parked vehicles were sideswiped as the truck careered toward the water, where the driver was able to turn the vehicle around and drive back onto land, Chief Habekost said.

“It could gave resulted in much more damage ... and injuries,” he said.

Tisbury police interviewed the driver and had the dump truck towed, Chief Habekost said.