Tirschwell, who most recently served as vice president of the Journal of Commerce, announced his plans to leave the business and continue work as an independent shipping journalist.
James McNamara, who joined the union as it faced tumult from containerization, persisted at his job over four decades to help shape the modern International Longshoremen’s Association.
The speech by Bobby Olvera sends a warning shot to employers and cargo owners ahead of the expiration of its longshore contract in 2028.