Page 168 - ΝΑΥΤΙΚΑ ΧΡΟΝΙΚΑ - SEPT 2025

Feature

The adoption of nuclear propulsion fundamentally mercial vessels will likely include large,
alters the requirements for ship design. Reactor energy-intensive ships, such as ultra-
placement and the necessary radiation shielding large container vessels, LNG carriers,
require significant space and structural adaptation, and larger bulk carriers. These types of
especially to ensure vessel stability ships benefit the most from the high
and the protection of personnel. energy density and long endurance that
nuclear propulsion offers. Vessels oper-
ating on fixed routes, where regulatory
and logistical planning can be stream-
lined, are also strong candidates.
Additionally, ice-class ships operating
in remote regions could benefit from
nuclear propulsion, as it reduces the
need for frequent refuelling in challeng-
ing environments.

Could nuclear propulsion be combined
with other technologies for hybrid
solutions?
Nuclear propulsion can indeed be inte-
grated into hybrid systems. Combin-
ing it with batteries, fuel cells, or wind-
assisted propulsion could enhance
operational flexibility and safety. For
instance, nuclear energy could provide
a reliable baseload, while batteries
or alternative systems handle peak loads
or port operations. Such hybrid config-
urations could also serve as transitional
solutions, easing the industry’s transi-
tion to broader nuclear adoption while
ship design. Reactor placement and the such support could significantly enhance maximising the efficiency and resilience
necessary radiation shielding require sig- the safe and effective operation of such of operations.
nificant space and structural adaptation, vessels.
especially to ensure vessel stability and What are your thoughts on floating
the protection of personnel. Are there concerns regarding radioac- nuclear power plants (FNPPs)
The maintenance of nuclear vessels is tive waste management at sea? as a potential shore power solution
complex, and it often demands highly Radioactive waste management is a for energy-intensive ports or ship-
specialised facilities and skilled techni- legitimate concern. Although modern yards?
cians. The inspection and handling of reactors produce relatively small amounts Floating nuclear power plants are a
radioactive components must be regu- of waste, the handling, storage, and promising solution for providing clean,
lar, while following stringent protocols. eventual disposal of radioactive materials stable shore power to energy-intensive
However, shipyards capable of support- must be managed with the utmost care. ports and shipyards. They could sig-
ing such work are still limited. Strict containment protocols and inter- nificantly reduce emissions from port
Regarding crew members, they must national oversight are essential to ensure operations and support the electrifica-
undergo specialised training not only in that nuclear waste does not pose a risk tion of shipyard activities. FNPPs are
marine engineering but also in nuclear to marine ecosystems or human health. particularly attractive for remote or
technology, radiation safety, and emer- Transparency and adherence to estab- energy-constrained locations where
gency preparedness. The operation lished best practices will be key to ensur- traditional power infrastructure is lack-
of nuclear-powered vessels will likely ing environmental safety and earning the ing. However, their deployment must
require certification from both maritime public’s trust. be accompanied by rigorous safety
and nuclear safety authorities, setting standards, regulatory oversight, and
a high bar for personnel qualification. What types of ships or operational pro- public engagement to address concerns
In addition, remote support from shore- files would you consider most suit- around security and environmental
based teams would be essential. With able for nuclear propulsion in the impact. With the proper safeguards in
today’s advanced digital monitoring tools first wave of adoption? place, FNPPs could play a valuable role
and efficient communication systems, The first wave of nuclear-powered com- in the maritime energy transition.

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