Analyzer
Sentence analysis
10Spans
Sentence
Span Details
海技
seamanship; maritime skillsnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
向上
improvement; advancement; rise; elevation; progressnoun, suru verb
は
topic markergrammar
安全
safety; securitynoun, na-adjective
な
adnominal form of the copula after a na-adjectivegrammar
航海
sea voyage; navigation; sailingnoun, suru verb
に
direction, time, indirect object, or target markergrammar
不可欠
indispensable; essential; vitalna-adjective, noun
だ。
plain copulagrammar