Designing a Constructive Midship Spangout for Inland Navigation Vessels . At 4 p.m.. H. 4" by A. A. Khmeleva is the completion of a large-scale and in-depth study dedicated to the design of one of the key elements of inland navigation vessels .. This work is not just a technical guide, but a real encyclopedia of knowledge that will be useful to both practicing engineers and students of specialized universities. In the fourth part of the book, the author continues to develop the topics covered in the previous volumes, and goes deeper into the design details of mid-spans, considering their design features, calculation methods and modern approaches to design. Khmelev shares his experience and knowledge, which makes the text not only informative, but also accessible for understanding. It uses many examples from practice, which allows the reader to better absorb the material and apply it in real conditions. This book will be of interest primarily to specialists in the field of shipbuilding, designers and designers, as well as students and graduate students studying marine and river technology. It will become an indispensable source of information for those who want to deepen their knowledge in the field of ship design and understand how to properly design structures that will be safe and effective in operation. If you are interested in shipbuilding, engineering or just want to expand your horizons in this area, then Khmelev’s work is what you need. The topics raised in the book include not only technical aspects of design, but also issues related to safety, material savings and optimization of production processes. Khmelev emphasizes the importance of high-quality design, which can significantly affect the performance of the vessel and its durability. In addition, the author examines current trends in shipbuilding, including the use of new materials and technologies, which makes the book relevant and useful in a rapidly changing world. Style A. A. Khmelev is distinguished by clarity and logical presentation, which allows the reader to easily follow his thoughts and ideas. He masterfully combines theory with practical examples, which makes the material not only informative, but also fascinating. In the previous parts of his work, the author has already established himself as a specialist able to convey complex concepts to a wide audience, and in the fourth part he continues this tradition. Designing a Constructive Midship Spangout for Inland Navigation Vessels . At 4 p.m.. H. 4" is not just a tutorial, but a real find for anyone who wants to deepen their knowledge in the field of shipbuilding. It will be an excellent addition to the library of every engineer and student, and will also be useful to anyone interested in modern technologies in this field. Do not miss the opportunity to get acquainted with the work of Khmelev and discover new horizons in the design of inland navigation vessels!