Taiwan is stepping up testing of its first indigenous submarine as the Narwhal enters a more intensive phase of sea trials ahead of a planned handover to the Navy later this year.
The submarine completed its 23rd round of sea trials near Kaohsiung on Oct. 2, with the latest testing also marking its 17th submersible test, according to Taiwan News, citing local reports.
The pace of testing is expected to increase, with Taiwan Association for Security and Development Chair Chi Tung-yun saying trials could take place weekly as shipbuilder CSBC Corporation, Taiwan, works toward the Navy’s delivery target.
But even if the Narwhal is handed over before the end of 2026, it will not immediately become fully operational.
The submarine will still have to undergo additional certification and testing at different levels. Chi estimated that this next stage could take at least six months and potentially more than a year before the vessel is considered combat-ready.
The extended testing period comes after CSBC made adjustments based on earlier sea trials. Chi said the company has prioritized safety and completion of the necessary tests despite missing a previous delivery deadline.
CSBC reportedly faces a NT$190,000 daily payment related to the missed November 2025 deadline, according to the report.
The Narwhal program therefore remains a closely watched milestone for Taiwan’s indigenous submarine effort. Its eventual handover would mark another major step, but the vessel’s path from sea trials to full operational status is expected to continue well beyond the delivery ceremony.
The submarine may be getting closer to the Navy — but the most demanding phase of its journey could still lie ahead.
WWC ONE MEDIA G,A
