diff --git a/src/lib/services/yachts.service.ts b/src/lib/services/yachts.service.ts
index 5f21206..802a2af 100644
--- a/src/lib/services/yachts.service.ts
+++ b/src/lib/services/yachts.service.ts
@@ -20,14 +20,15 @@ interface AuditMeta {
 async function assertOwnerExists(
   portId: string,
   owner: { type: 'client' | 'company'; id: string },
+  tx: typeof db,
 ): Promise<void> {
   if (owner.type === 'client') {
-    const client = await db.query.clients.findFirst({
+    const client = await tx.query.clients.findFirst({
       where: and(eq(clients.id, owner.id), eq(clients.portId, portId)),
     });
     if (!client) throw new ValidationError('owner not found');
   } else {
-    const company = await db.query.companies.findFirst({
+    const company = await tx.query.companies.findFirst({
       where: and(eq(companies.id, owner.id), eq(companies.portId, portId)),
     });
     if (!company) throw new ValidationError('owner not found');
@@ -36,7 +37,7 @@ async function assertOwnerExists(
 
 export async function createYacht(portId: string, data: CreateYachtInput, meta: AuditMeta) {
   return await db.transaction(async (tx) => {
-    await assertOwnerExists(portId, data.owner);
+    await assertOwnerExists(portId, data.owner, tx as unknown as typeof db);
 
     const [yacht] = await tx
       .insert(yachts)