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Invesaro publishes investment theses and settles them against the market in public: with a date, a basket of companies and a verdict.

Investment thesis

America Wants to Rebuild Its Fleet but Has No Shipyards: Orders, US Navy Overhauls, and Margins Flow to Korea

LivePublished July 20, 2026150-day horizongeopolitics
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In short

  1. What is happening
    US: port fees, maritime executive order, and MASGA package
  2. Why it matters
    Tariffs on Chinese vessels, the MASGA package, and docks booked through 2029: Korean shipyards capture global orders and enter a phase of record margins.
  3. What must hold
    Assumptions are statements that must stay true for the thesis to make sense.
    Assumptions: 5. See the assumptions
  4. When is the verdict
    The horizon is the time we give a thesis. That many days after publication we settle it: we compare the basket of companies with the market benchmark and give a verdict.
    December 17, 2026, 150 days after publication
  5. Our score at publication
    A score from 0 to 100 given on the day of publication, before the market has verified anything. On the results page we check in public whether higher-scored theses do better.
Basket return
-3.6%
equal weight, since publication
The market over the same window
+1.9%
benchmark for this basket
Edge over the market
-5.5%
in percentage points

Companies in the basket

The argument

While the market tracks every megawatt and every chip of the AI bull run, another structural deficit is quietly mounting: shipbuilding capacity outside China. Chinese shipyards possess capacity approximately 230 times larger than American yards and launch more than half of global tonnage. Washington has deemed this a national security vulnerability: in April 2025, the White House signed an executive order on rebuilding maritime power, in October port fees for Chinese-built vessels took effect, and the trade agreement with Korea included the MASGA package-$150 billion for shipbuilding cooperation. A ship is a 25- to 30-year asset, so even fee suspensions for a year (the effect of the Busan truce) leave a lasting risk premium: a shipowner planning decades ahead prefers to pay extra for a slot in Korea or Japan rather than risk their Chinese vessel becoming the target of the next tariff round.

The issue is that non-Chinese capacity is structurally constrained. Following a decade of bankruptcies and consolidation, active global shipbuilding capacity has shrunk by roughly one-third since its 2011 peak, and Korea itself shut down a significant portion of its docks after the 2015-2016 crisis. The result: the Seoul 'Big Three' have order books filled through 2028-2029, the newbuilding price index remains near all-time highs, and shipyards can cherry-pick contracts, prioritizing high-margin gas carriers and dual-fuel vessels.

What this thesis rests on

Each one is a statement that has to be true. We go back to every live thesis on a schedule and check these against public sources, so each leg carries either what we found or the date we look next.

Archive: reviews of this thesis are paused. Last review September 15, 2026.

  1. HD Korea Shipbuilding & Offshore Engineering reports a consolidated operating margin above 8% in both its Q2 2026 and Q3 2026 results.

    financial · Supported

    A source confirms this · August 30, 2026

    Q2 2026 results released 29 Jul 2026: consolidated revenue KRW 8.927trn, operating profit KRW 1,645.1bn, a consolidated operating margin of 18.4%, up 5.6pp year on year; operating profit rose 72.5%. Q3 2026 has not been reported yet.

    See the source
  2. The combined shipbuilding backlog of HD KSOE, Hanwha Ocean and Samsung Heavy at end-Q3 2026 is no lower than at end-2025, with delivery slots still booked into 2029.

    operational · Open

    Checked September 15, 2026, nothing published either way

  3. The United States lets the one-year suspension of port fees on Chinese-built vessels lapse in November 2026 instead of extending it under a US-China deal.

    regulatory · Open

    Checked September 15, 2026, nothing published either way

  4. The Clarksons Newbuilding Price Index stays within 5% of its 2025 peak through 17 December 2026.

    competitive · Supported

    A source confirms this · August 30, 2026

    Clarksons Newbuilding Price Index stood at 186.25 points as of 21 Aug 2026, up 0.61 points (0.33%) on the week. The index traded at 186.26 in Aug 2025 and 185.33 in Oct 2025, so the Aug 2026 reading is level with 2025 and inside the 5% band.

    See the source
  5. Hanwha Ocean is awarded at least one additional US Navy MRO or MASGA-linked shipbuilding contract before 17 December 2026.

    operational · Open

    Checked September 15, 2026, nothing published either way

Show the causal chain step by step
  1. US: port fees, maritime executive order, and MASGA package
  2. Emission regulations (FuelEU, ETS, IMO) drive dual-fuel vessels
  3. Orders bypass China and flow to Korea and Japan
  4. Ex-China capacity down by one-third, slots booked to 2029
  5. Record newbuild prices, deliveries from expensive 2022-2024 backlog
  6. Korean shipbuilders and Japanese suppliers: margin surge

This thesis, over time

What has happened since publication. Every entry is computed as of its own date, from price history.

October 3, 2026

Day 75 of 150: basket -3.7%

The thesis is halfway to its verdict. The equal-weight basket stands at -3.7% since publication day. The benchmark (S&P 500) returned +1.9% over the same window, so the basket trails its market by 5.5 percentage points. The strongest contributor is 009540 (-2.2%), the weakest is 7003 (-6.5%). 75 days remain until the verdict.

September 15, 2026

Review on day 57: nothing moved

We went back to this thesis on day 57 of 150 and checked each of its 5 assumptions against public sources. No news either way: 5. The equal-weight basket stands at -1.5% since publication day. The benchmark (.INX) returned +2.4% over the same window, so the basket trails its market by 3.9 percentage points. 93 days remain until the verdict.

August 30, 2026

Review: 2 of 5 assumptions confirmed

We went back to this thesis on day 41 of 150 and checked each of its 5 assumptions against public sources. Confirmed by the sources: 2. No news either way: 3. The equal-weight basket stands at +3.6% since publication day. The benchmark (.INX) returned +3.6% over the same window, so the thesis is moving with its market. 109 days remain until the verdict.

August 26, 2026

Day 38 of 150: basket +1.6%

The first quarter of the horizon is behind this thesis. The equal-weight basket stands at +1.6% since publication day. The benchmark (S&P 500) returned +3.1% over the same window, so the basket trails its market by 1.6 percentage points. The strongest contributor is 009540 (+6.0%), the weakest is 7003 (-3.6%). 112 days remain until the verdict.

July 27, 2026

Basket crossed +10% since publication

This basket is at +10.4% since publication, 7 days after the thesis was posted. The benchmark (S&P 500) returned -0.4% over the same window, so the basket is ahead of its market by 10.8 percentage points. The strongest contributor is 7003 (+15.5%), the weakest is 042660 (+6.7%). This is not a change of status: the horizon keeps running and the verdict only lands once it expires.

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This is analysis, not investment advice and not a recommendation to buy or sell anything. We publish it and track it in public, mistakes included. Any decision is yours and yours alone.