Floatplane pilot reported a rejected lake landing due to conflict with a crossing vessel.

Narrative:

While preparing to land towards the north and parallel to west shoreline; a boat was seen moving south along same shoreline. Pilot extended base to land along east shoreline. Touched down short of intended target. Upon touchdown; a boat appeared moving from left to right and stopped approximately 300 feet in front of aircraft. Applied full power and overflew boat at low altitude - between 50 and 100 feet.contributing factors:pilot made assumption boat was going to boat ramp and if it wasn't; that it would not be a factor because of distance involved. Both assumptions were wrong. Pilot lost sight of boat on final because he was at low altitude over cove with point blocking view of boat (houses and tree).lessons learned: 1) pilot should not have attempted landing without visually confirming boats location. 2) pilot should have applied power when he saw he would land short so the point didn't block visibility.

Original NASA ASRS Text

Title: Floatplane pilot reported a rejected lake landing due to conflict with a crossing vessel.

Narrative: While preparing to land towards the north and parallel to west shoreline; a boat was seen moving south along same shoreline. Pilot extended base to land along east shoreline. Touched down short of intended target. Upon touchdown; a boat appeared moving from left to right and stopped approximately 300 feet in front of aircraft. Applied full power and overflew boat at low altitude - between 50 and 100 feet.Contributing factors:Pilot made assumption boat was going to boat ramp and if it wasn't; that it would not be a factor because of distance involved. Both assumptions were wrong. Pilot lost sight of boat on final because he was at low altitude over cove with point blocking view of boat (houses and tree).Lessons learned: 1) Pilot should not have attempted landing without visually confirming boats location. 2) Pilot should have applied power when he saw he would land short so the point didn't block visibility.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1554593
Time
Date	201806
Local Time Of Day	0601-1200
Environment
Light	Daylight
Aircraft 1
Make Model Name	Seaplane or Amphibian
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	None
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Sea Flight Crew Private
Experience	Flight Crew Last 90 Days 9 Flight Crew Total 388 Flight Crew Type 255
Events
Anomaly	Conflict Ground Conflict Critical
Miss Distance	Horizontal 300 Vertical 100