“Yellow Slaves” in True Gang Life with Roger Sherman Hoar writing as Ralph Milne Farley.
Again Torchy avoided it, while O’Brien poured a stream of lead into the enemy. But the man in the stern, protected by the bulletproof glass of the cabin, was untouched, and no other figure was visible. And again the vessel curved back, this time cutting its course so that it was almost successful in ramming their strange helper, who circled a hundred and fifty feet distant. Then bore down on the G-men again.
Very narrowly indeed did Torchy avoid this attempt. The board beneath them shook to a glancing blow, and then the enemy sheered off again—but as the gap widened, a lithe figure flung itself across from the Sting-ray to the outlaw! A knife flashed in an upraised arm, and suddenly the smuggler’s motors died into silence, and the craft lost headway, sliding at last gently to their very side. And in the stern crouched Foo Yong, wiping his bloody knife on the clothes of his victim!