T.S. Lines will restructure its JTK and JTK2 services connecting Japan, Taiwan and China at the end of October, moving Nagoya into the JTK rotation and transferring Taichung to the JTK2 loop, according to DynaLiners.

The adjustment redistributes two ports between the carrier's paired intra-Asia strings rather than cutting capacity. Both services will continue linking Japan's Kanto region with Taiwan, Hong Kong and Southern China after the reshuffle takes effect.

What changes in the JTK rotation?

Under the revised structure, Nagoya — Japan's largest port by cargo tonnage and a key Central Japan (Chubu) gateway — moves from JTK2 to the JTK service. The new JTK rotation reads:

• Tokyo
• Yokohama
• Nagoya
• Keelung
• Kaohsiung
• Nansha
• Hong Kong
• Shekou
• Tokyo

The insertion of Nagoya ahead of the Taiwan calls gives JTK an additional Japanese loading point, broadening the port coverage shippers can reach on a single weekly loop through Kanto, Chubu, Taiwan and the Pearl River Delta.

What changes in the JTK2 rotation?

Taichung, Taiwan's second-busiest container port, shifts from JTK to JTK2. The revised JTK2 rotation is:

• Tokyo
• Yokohama
• Keelung
• Taichung
• Kaohsiung
• Hong Kong
• Nansha
• Shekou
• Tokyo

JTK2 retains two Kanto calls, Tokyo and Yokohama, before proceeding directly to Keelung and then Taichung. The reshuffle gives JTK2 two Taiwanese west-coast ports in the northern part of the island — Keelung and Taichung — ahead of the Kaohsiung call and the South China leg.

Why does the split matter for shippers and forwarders?

The net effect is a cleaner division of labour between the two strings. JTK becomes the loop carrying both of Japan's major Kanto gateways plus Nagoya, while JTK2 concentrates Taiwan coverage with Keelung, Taichung and Kaohsiung grouped together after the Japanese calls.

For shippers in Central Japan moving cargo via Nagoya, the change means their port now sits on the same string as the full Taiwan and South China rotation called at Keelung, Kaohsiung, Nansha, Hong Kong and Shekou. For Taiwan-based shippers and forwarders booking via Taichung, the shift to JTK2 keeps direct connections to Tokyo, Yokohama, Hong Kong, Nansha and Shekou.

Both rotations maintain identical South China footprints — Nansha, Hong Kong and Shekou — so mainland China coverage is unchanged on paper. What shifts is the sequence and the pairing of Japanese and Taiwanese ports upstream of the Pearl River Delta calls.

For carriers, such paired reshuffles are a low-cost way to rebalance port coverage without adding tonnage. By swapping Nagoya and Taichung between the two loops, T.S. Lines keeps its network footprint intact while adjusting the cargo mix each string can assemble — relevant on a trade where Japanese exports of electronics components and Taiwanese transshipment feed compete for slot space with South China-bound volumes.

For intra-Asia forwarders, the practical task ahead of the late-October cutover is confirming bookings against the new rotations rather than the old ones. Cargoes booked on the assumption that Nagoya sits on JTK2, or Taichung on JTK, will need to shift loops at the transition, with corresponding adjustments to documented port rotations.

What stays the same?

Both services continue to connect Japan's Kanto region — the Tokyo–Yokohama conurbation — with Taiwan, Hong Kong and Southern China. The nine-port structure of each rotation is preserved: neither loop loses a call, and neither gains one beyond the two swapped ports. Tokyo remains the bookend port on both strings, opening and closing each cycle.

The end-October timing, as reported by DynaLiners, positions the change ahead of the intra-Asia peak-season tail, when pre-holiday volumes between North Asia and South China typically tighten slot availability on the trade.

Shippers with fixed weekly sailings ex-Nagoya or ex-Taichung should verify which of the two revised loops carries their cargo once the reshuffle takes effect at the end of October, as the carrier rebalances port coverage across its Japan–Taiwan–China network.