Creation of microclimate zones during dock repair of ice-class vessels at ship repair facilities in the Far East

In the context of technological sovereignty, with the emergence of innovative ice-class supply vessels operating on the shelf of the Far Eastern seas and in the Arctic region, there is an urgent need to carry out dock repairs at domestic ship repair enterprises in the Far East. At the same time, the climatic conditions of ship repair enterprises in the Far East do not allow for high-quality application of ice-resistant paint coatings on the hulls of ice-class vessels under repair, and make it difficult to perform other dock repair operations year-round. Year-round dock repairs can be provided in at least two ways: by creating covered docks and slipways, or by organizing microclimate zones near the hulls of ships in floating or open dry docks. Pneumatic panels made using drop-stitch technology make it possible to create effective structures of dock local shelters that have good thermal insulation qualities, are easy to erect and have a high bearing capacity. On the example of a model local shelter of the area at the side of the supply vessel, an assessment of energy consumption was carried out to create the necessary temperature at the side of the vessel when applying an epoxy ice-resistant coating of the Inert 160 type, taking into account the heat-insulating qualities of a shelter made of pneumatic panels at a conditional external temperature corresponding to winter docking conditions. The task of heat balance is set for the steady mode of heating the space under the shelter with the injected heated air. The load-bearing capacity of the pneumatic panel shelter was also assessed, provided only by excess pressure in the panels. The results confirm the possibility of creating local dock shelters to create microclimate zones based on pneumatic panel structures.