更新 显示逻辑

src/views/shipSecurityManage/checkShip.vue

@@ -56,7 +56,7 @@
         />
       </el-select>
     </div>
-    <el-button-group class="mb20" v-show="ships.length > 1">
+    <el-button-group class="mb20" v-show="ships.length">
       <el-button
         v-for="(item, index) in ships"
         @click="shipIndex = index"