A modular hydrofoil watercraft comprising a plurality of modules which are releasably connectable to each other to when assembled form said modular hydrofoil watercraft, wherein said modular hydrofoil watercraft when assembled comprises: a hull extending along a longitudinal center axis; a propulsion system comprising a motor and a propelling member, the motor being in driving connection with said propelling member; a mast adapted to extend downwardly from the hull, the propelling member being connected to the mast; and a hydrofoil connected to the mast; wherein the plurality of modules comprises at least a first module and second module being releasably connectable to each other, whereby the modular hydrofoil watercraft further comprises one or more locking arrangements (110, 120, 130), wherein a locking arrangement (110, 120, 130) of said one or more locking arrangements (110, 120, 130) is arranged to releasably retain the first module and the second module of the plurality of modules in connection, wherein the modular hydrofoil watercraft further comprises: an electric power unit for powering the propulsion system, a connector part connected to the mast, the connector part comprising a connector releasably connected to the electric power unit, said connector part being configured to operatively couple the propulsion system and the electric power unit, wherein the connector part is releasably connected to the hull, characterised in that the one or more locking arrangements (110, 120, 130) comprises a connector locking arrangement arranged to releasably retain the hull and the connector part in connection, and wherein the connector locking arrangement is arranged to be accessible from a top surface of the hull. a hull extending along a longitudinal center axis; a propulsion system comprising a motor and a propelling member, the motor being in driving connection with said propelling member; a mast adapted to extend downwardly from the hull, the propelling member being connected to the mast; and a hydrofoil connected to the mast; wherein the plurality of modules comprises at least a first module and second module being releasably connectable to each other, whereby the modular hydrofoil watercraft further comprises one or more locking arrangements (110, 120, 130), wherein a locking arrangement (110, 120, 130) of said one or more locking arrangements (110, 120, 130) is arranged to releasably retain the first module and the second module of the plurality of modules in connection, wherein the modular hydrofoil watercraft further comprises: an electric power unit for powering the propulsion system, a connector part connected to the mast, the connector part comprising a connector releasably connected to the electric power unit, said connector part being configured to operatively couple the propulsion system and the electric power unit, wherein the connector part is releasably connected to the hull, characterised in that the one or more locking arrangements (110, 120, 130) comprises a connector locking arrangement arranged to releasably retain the hull and the connector part in connection, and wherein the connector locking arrangement is arranged to be accessible from a top surface of the hull. an electric power unit for powering the propulsion system, a connector part connected to the mast, the connector part comprising a connector releasably connected to the electric power unit, said connector part being configured to operatively couple the propulsion system and the electric power unit, wherein the connector part is releasably connected to the hull, characterised in that the one or more locking arrangements (110, 120, 130) comprises a connector locking arrangement arranged to releasably retain the hull and the connector part in connection, and wherein the connector locking arrangement is arranged to be accessible from a top surface of the hull.