Ships Challenge U.S. Blockade as Risk Appetite Grows, Expert Says

15/04/2026

Ships Challenge U.S. Blockade as Risk Appetite Grows, Expert Says

WASHINGTON / DUBAI, Apr 15: More vessels are attempting to test the U.S. naval blockade on Iranian ports, with growing pressure inside the Gulf pushing ship operators toward riskier decisions, a naval expert said.

Joshua Tallis, director of security affairs at the Center for Naval Analyses, said the lack of alternative routes has created “pent-up pressure,” particularly among ships stranded in the Gulf, leading to a higher tolerance for risk compared to past crises.

He added that limited visibility at sea and the presence of “shadow vessels” — which conceal their identity or destination — are complicating enforcement and creating potential gaps some ships may try to exploit. However, Tallis noted that such evasion efforts are unlikely to significantly undermine the blockade, as U.S. naval forces retain strong tracking capabilities.

According to Tallis, the effectiveness of the blockade depends less on individual ships slipping through and more on the cumulative economic pressure over time.