Marina development in Japan

This article was also published in issue 153 of Marina World magazine. Click here to read the online version.

As Japan attracts growing interest as a cruising destination for foreign-flagged superyachts, attention is increasingly turning to whether its existing marina infrastructure is suited to this shift in demand.

With a coastline of approximately 30,000 kilometres, Japan ranks among the countries with the longest shorelines in the world. As an archipelago of 14,125 islands, according to a 2023 survey by the Geospatial Information Authority of Japan, the country has long supported a substantial domestic recreational boating market, with marinas and boating facilities distributed across its coastline and inland waters.

But how many marinas does Japan really have and where are they concentrated? Even the question of scale is not straightforward. Estimates of Japan’s marina network vary widely, depending on how a “marina” is defined. Nigel Beatty of SYL Monaco, one of the principal investors in the Superyacht Base Kobe project, notes that while figures of around 1,250 sites are sometimes cited, many would not meet conventional definitions of a marina. “A lot of them will be little more than a ramp on a lake, where boats are stored ashore and basic oversight is provided,” he says, adding that such facilities “wouldn’t really be what the yachting industry considers a marina”.

Applying more stringent criteria, including proper berthing, utilities and basic services, reduces that figure significantly. “If you set some parameters, such as proper docks, shore power, water and services, you’re probably looking at closer to 600 marinas in Japan,” Beatty says.

Beatty notes that these figures relate specifically to pleasure vessels rather than fishing fleets, underlining the scale of Japan’s domestic boating market. “Japan has one of the largest populations of pleasure vessels in Asia,” he adds, with demand largely driven by private owners operating smaller leisure and sport fishing craft.

In geographic terms, Beatty suggests that the main concentration of marinas lies across central Japan, spanning cities such as Tokyo, Yokohama, Nagoya, Osaka and Kobe, and extending further west towards Hiroshima and Fukuoka. He describes this stretch as the “Japan Industrial Belt”, emphasising that it contains the country’s largest concentration of people, while facilities become more scattered outside the main population centres.

Evolution

Japan’s marina network is rooted in a much longer maritime tradition. As an island nation shaped by mountainous terrain, the country has historically relied heavily on the sea and Beatty describes Japan as “a sea-faring nation for a long time”. He suggests that the roots of recreational boating in Japan extend further back than is sometimes assumed, pointing to documentation from Kobe dating to 1890 that refers to the Kobe Yacht Club, the Kobe Sailing Club and pleasure-yacht dock use. A similarly early example can be found in Yokohama, where the Yokohama Yacht Club dates to 1896.

As recreational boating became more firmly established in Japan, marina development appears to have accelerated, particularly during the 1960s, 1970s and 1980s. Kenta Inaba, Managing Partner at SYL Japan, who has been involved in the design of marinas in Japan, links this expansion to the country’s wider economic rise. He suggests that as living standards increased and Japan caught up with Europe and the United States, interest in leisure boating also grew. In turn, this helped drive demand for marinas, with a significant share of Japan’s existing boating infrastructure emerging during these decades. Development then slowed after the collapse of the country’s asset bubble in the early 1990s.

Despite this slowdown, Beatty adds that development “did not come to a halt”, with newer facilities continuing to emerge in the years that followed. He cites Ashiya Marina, which opened in 1998 in Ashiya City, Hyogo Prefecture, near Kobe, as one such example. The marina can accommodate visitor yachts of up to 55 metres with a maximum draft of four metres, illustrating how development persisted even after the sector’s earlier period of expansion had eased.

Constraints

Beyond cost and location, marina development in Japan is also shaped by the governance of waterfront space. Inaba explains that development is often determined by whichever authority controls the relevant port or waterfront site. Depending on the location, that authority may rest with the central government, a prefectural authority or a municipal body such as a city government. In practice, this has meant that marina development has often taken place through concession-based arrangements rather than outright private ownership, with public authorities playing a central role in how waterfront space is allocated and used.

This governance structure has had important implications for investment. Inaba suggests that many marinas were historically government-built and government-managed, or operated through local management arrangements that did not encourage substantial long-term reinvestment. He argues that where management rights were subject to relatively short cycles, operators had little incentive to commit major capital to upgrades, noting that “every five years, no one spent the millions to modify the marina for having a big boat, like a superyacht”. In practice, this has limited the extent to which existing facilities have been adapted for larger yachts.

Inaba also argues that the issue is partly historical. Much of Japan’s marina infrastructure was developed around the domestic small-boat market, with facilities primarily designed for vessels below 24 metres rather than for larger yachts. Combined with limited incentives for substantial reinvestment, this has left a significant share of the country’s marina network misaligned with the technical and operational requirements of superyachts.

Alongside these governance constraints, the development of new infrastructure remains shaped by a combination of economic and spatial factors. In well-connected and desirable coastal locations, land is both scarce and expensive, making it difficult to develop marinas that are both accessible and commercially viable. Beatty describes the cost of building such infrastructure from scratch as “pretty astronomical”.

For Beatty, the challenge is not simply one of securing waterfront land, but of finding sites with the right qualities. In more remote coastal areas, land may be easier to obtain, but projects there risk becoming what he calls “a boat park somewhere out in the middle of nowhere”, rather than a marina integrated into a broader destination.

The more attractive model, in his view, is one where visitors can “go ashore and walk into town”, with the marina embedded in the life of the surrounding area. Yet these are also the kinds of locations where waterfront real estate is most expensive. In major urban centres such as Tokyo, he notes, such sites are difficult for marina projects to secure, as they are more likely to be absorbed by higher-value commercial development.

These governance, historical and spatial constraints help explain why Japan’s marina network, while extensive, has not yet translated into widespread infrastructure suited to larger yachts. Even so, the landscape is beginning to evolve, with new developments such as Kobe Marina pointing to a gradual expansion of facilities capable of accommodating superyachts.

Future prospects

For both Beatty and Inaba, the future of marina development in Japan is unlikely to be defined by uniform expansion, but by a more selective shift towards destination-led projects, upgraded waterfronts and facilities better suited to larger yachts.

Beatty’s outlook is shaped primarily by location and destination appeal. In his view, future development should move away from isolated facilities and towards marinas that are more closely integrated with local business and local people. He argues that the stronger model is one where visitors can “go ashore and walk into town”, with marinas forming part of a wider destination that increases local business, rather than existing as remote stand-alone berthing sites. 

He appears particularly optimistic about the Seto Inland Sea, where he suggests marina development could gather momentum alongside broader investment in hospitality and tourism. By contrast, he sees major metropolitan waterfronts such as central Tokyo as less likely to accommodate this kind of growth, given the high value and competing uses of urban coastal real estate.

Inaba’s perspective is more closely tied to policy and infrastructure. He suggests that future progress will depend in large part on continued movement in government thinking, particularly around waterfront revitalisation, concession models and the adaptation of existing port infrastructure for larger yachts. In his view, this shift is already under way. He points to efforts to add “power, water” and other supporting infrastructure in port areas, as well as a growing willingness among authorities to open up or repurpose waterfront space for private-vessel use.

Rather than seeing future growth solely in the construction of entirely new marinas, Inaba also appears to envisage a gradual upgrading of existing commercial and underused waterfront sites to make them more suitable for superyacht operations.

Japan’s next phase of marina development is likely to be gradual rather than transformative. The strongest prospects appear to lie not in a nationwide wave of new-build marinas, but in a more selective combination of destination-led development, targeted infrastructure upgrades and the repurposing of existing waterfront space Whether that will be enough to create a broader network capable of supporting larger yachts remains uncertain. What is clearer is that Japan’s marina landscape is beginning to evolve beyond the domestic recreational model that shaped much of its earlier development.