Sentence:  The Seagull and Heineken gods were with us — what a wonderful day weather wise — an ideal <WSD>Seagulling</WSD> race day — winds were light — and crossing the harbour to Sandys Boat Club at 7.15am the water was glassy. 
Meaning of the word marked with <WSD> tags:  The practice of using a British Seagull outboard.