The Person Rowing Boat: Dark Skin Tone emoji is a modifier sequence combining ? Person Rowing Boat and ? Dark Skin Tone. These display as a single emoji on supported platforms.
Person Rowing Boat: Dark Skin Tone was added to Emoji 2.0 in 2015.
U+1F6A3
U+1F3FF
?? Rowboat
?? Emoji modifier fitzpatrick type-6