1 Introduction

Academic discourse plays a crucial role in knowledge dissemination and academic exchange. With the strengthening of international academic exchange, it has become particularly important to enhance the English research paper writing ability of young Chinese scholars. The "Guidelines for College English Teaching" include English for Specific Purposes in college English courses, and the scale of academic English research continues to expand. Corpus provides empirical dimensions for academic English research and enhances the credibility of the study. Multiple disciplinary corpora have been established both domestically and internationally, but the construction of corpora for the Ship and Ocean Engineering discipline is relatively lagging behind. The existing maritime English corpus database has a small capacity and cannot fully represent the academic English language of the discipline. Although small-scale self built corpora serve specific research purposes, their application scope is limited. Therefore, it is practical and urgent to build a comprehensive academic English corpus for ship and sea disciplines. Under the guidance of the "DEAP Academic English Corpus" construction project, this project has created the ShipDEAP Academic English Corpus for Ship and Ocean Engineering, aiming to promote academic English research in this discipline.

2. Database construction objectives

The three main objectives of creating the ShipDEAP corpus are: 1) to construct a corpus that contains 5 million words, covers a wide range, has a large scale, strong timeliness, and reflects the characteristics of academic English in the discipline; 2) Provide rich linguistic resources for academic English research in the field of ship and ocean engineering, and support the study of the universal discourse system, discourse strategies, and knowledge construction methods of international discourse societies; 3) Serving academic English teaching and dictionary compilation in this discipline, providing search and example resources.

3 Corpus collection plan

Discussed the corpus collection plan for creating the ShipDEAP academic English corpus for ship and ocean engineering. To ensure the representativeness and coverage of the corpus, the study considers three aspects: disciplinary field, journal sources, and text composition. According to the discipline catalog issued by the Ministry of Education, the corpus covers three secondary disciplines under the first level discipline of Ship and Ocean Engineering. The selection of journal sources is based on SCI international journals, considering impact factors and zoning, and after discussing with experts, 26 journals have been determined. The text composition includes research papers, review papers, and book reviews, with research papers as the main focus to ensure timeliness. Only articles published between 2016 and 2021 are included.

4 Corpus construction

Detailed description of the construction process of ShipDEAP academic English corpus for ship and ocean engineering. Firstly, 900 articles from 2016 to 2021 with a total word count exceeding 7 million were collected through the Web of Science literature database. Then, according to the requirements of the DEAP corpus, approximately 260 articles were randomly selected from each secondary discipline to form a sub library of 5 million words. During the collection process, special attention should be paid to distinguishing papers from different secondary disciplines in the field of ship and sea, and using HTML format to directly copy the content of the papers into TXT documents to ensure the cleanliness of the corpus. Each paper is included in full text, but non linguistic information such as headers and footers are excluded, and detailed literature information is recorded for easy later search.

5 Language Research and Teaching Research Based on ShipDEAP Corpus

The ShipDEAP corpus provides abundant resources for the study of academic English in ship and sea research, which can be used to analyze language features such as vocabulary, phrases, sentence structures, and discourse structures, revealing discourse organization strategies of academic papers and knowledge construction methods of academic discourse communities. Based on Swales' pace analysis method and Hyland's interactive meta discourse framework, it is possible to explore the pace construction and interactive meta discourse expression of specific genre texts. Cross disciplinary comparative studies with corpora from disciplines such as mathematics and civil engineering can help to summarize the unique discourse characteristics of the field of marine engineering. In terms of academic English teaching, ShipDEAP can provide standardized examples of academic language usage, compile professional vocabulary lists and chunk lists, and improve students' mastery of vocabulary usage and collocation structures. Teachers can use corpora to assist teaching, summarize and generalize internationally common sentence structures and discourse structures, narrow the gap between students and experts in discourse practice, enhance expression norms and genre awareness, and improve the international academic dialogue ability of ship and sea scholars. In addition, ShipDEAP can also be used for research in dictionary compilation, term extraction, machine assisted translation, and natural language processing.

6 Conclusion

The construction process of ShipDEAP corpus was introduced, including the construction plan, corpus collection, naming, cleaning, and annotation, ensuring the representativeness and accuracy of the corpus. Provides both plain text and part of speech coded versions for academic research. Widely applicable, it can be used for academic language ontology research and teaching, promoting international academic exchanges. At present, it is a synchronic monolingual corpus, and expansion and construction may be considered in the future.