Columbia 400 pilot reported deviating from published procedure on departure from bfi.

Attributes
ACN	1289209
Time
Date	201508
Place
Locale Reference	BFI.Airport
State Reference	WA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	VFR Route
Flight Plan	VFR
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 1150 Flight Crew Type 1000
Events
Anomaly	Conflict Airborne Conflict Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types
Miss Distance	Horizontal 500 Vertical 500

Narrative:

Departing VFR south on runway 13 right blake island departure. After take-off; right turn to crosswind; I continued at 800 ft. Flying to the shoreline towards the fauntleroy ferry dock. Landing traffic for seatac was overhead and I maintain focus of keeping altitude at 800 ft. And visual separation from traffic. I failed to turn downwind as per VFR departure procedure before direct to ferry dock.

Original NASA ASRS Text

Title: Columbia 400 pilot reported deviating from published procedure on departure from BFI.

Narrative: Departing VFR south on RWY 13 Right Blake Island departure. After take-off; right turn to crosswind; I continued at 800 ft. flying to the shoreline towards the Fauntleroy ferry dock. Landing traffic for SeaTac was overhead and I maintain focus of keeping altitude at 800 ft. and visual separation from traffic. I failed to turn downwind as per VFR departure procedure before direct to ferry dock.

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.