diff --git a/App/app/(portal)/crewing/crew/[id]/page.tsx b/App/app/(portal)/crewing/crew/[id]/page.tsx
index 43a4250..703515b 100644
--- a/App/app/(portal)/crewing/crew/[id]/page.tsx
+++ b/App/app/(portal)/crewing/crew/[id]/page.tsx
@@ -2,7 +2,7 @@ import { auth } from "@/auth";
 import { db } from "@/lib/db";
 import { hasPermission } from "@/lib/permissions";
 import { CREWING_ENABLED } from "@/lib/feature-flags";
-import { canViewSalary, bankEpfValue } from "@/lib/crew-pii";
+import { canViewSalary, bankEpfValue, documentNumberValue } from "@/lib/crew-pii";
 import { redirect, notFound } from "next/navigation";
 import { CrewProfile } from "./crew-profile";
 import type { Metadata } from "next";
@@ -68,7 +68,7 @@ export default async function CrewProfilePage({ params }: { params: Promise<{ id
       documents={c.documents.map((d) => ({
         id: d.id,
         docType: d.docType,
-        number: d.number,
+        number: documentNumberValue(d.number, d.docType, role),
         issueDate: d.issueDate?.toISOString() ?? null,
         expiryDate: d.expiryDate?.toISOString() ?? null,
         verificationStatus: d.verificationStatus,
diff --git a/App/lib/crew-pii.ts b/App/lib/crew-pii.ts
index 0550c5a..ab06947 100644
--- a/App/lib/crew-pii.ts
+++ b/App/lib/crew-pii.ts
@@ -1,4 +1,4 @@
-import type { Role } from "@prisma/client";
+import type { Role, SeafarerDocType } from "@prisma/client";
 
 // PII visibility rules for the crew profile (Crewing-Implementation-Spec §6/§8.8).
 // Bank account / EPF identity numbers are full only for Accounts (and SuperUser);
@@ -8,6 +8,11 @@ export function canViewFullBankEpf(role: Role): boolean {
   return role === "ACCOUNTS" || role === "SUPERUSER";
 }
 
+// Identity documents whose number is itself restricted PII (Aadhaar/PAN), gated
+// like bank/EPF (§6, Roles-and-Permissions §3). Other seafarer documents
+// (passport, CDC, STCW, COC, medical…) are not number-restricted.
+const RESTRICTED_DOC_TYPES = new Set<SeafarerDocType>(["AADHAAR", "PAN"]);
+
 export function canViewSalary(role: Role): boolean {
   // Office roles see salary; site staff see status only (§6, R7).
   return role !== "SITE_STAFF";
@@ -26,3 +31,18 @@ export function bankEpfValue(value: string | null | undefined, role: Role): stri
   if (!value) return "—";
   return canViewFullBankEpf(role) ? value : maskTail(value);
 }
+
+// A seafarer document number, masked for non-privileged roles when the document
+// type is itself restricted PII (Aadhaar/PAN). Non-restricted documents pass
+// through unchanged. Preserves the `string | null` contract the profile expects.
+export function documentNumberValue(
+  value: string | null | undefined,
+  docType: SeafarerDocType,
+  role: Role
+): string | null {
+  if (!value) return null;
+  if (RESTRICTED_DOC_TYPES.has(docType) && !canViewFullBankEpf(role)) {
+    return maskTail(value);
+  }
+  return value;
+}
diff --git a/App/tests/integration/crew-pii-page.test.ts b/App/tests/integration/crew-pii-page.test.ts
new file mode 100644
index 0000000..1213b36
--- /dev/null
+++ b/App/tests/integration/crew-pii-page.test.ts
@@ -0,0 +1,87 @@
+/**
+ * Integration test for the server-side PII masking on the crew profile page.
+ * Identity-document numbers (Aadhaar/PAN) must be masked BEFORE they cross to the
+ * client component — full only for Accounts/SuperUser (Crewing-Implementation-Spec
+ * §6 / Roles-and-Permissions §3). We invoke the server component and inspect the
+ * props it hands to <CrewProfile>, so a regression that passes raw numbers to the
+ * client is caught here.
+ */
+import { vi, describe, it, expect, beforeAll, afterAll, afterEach } from "vitest";
+import React from "react";
+
+// The integration runner compiles the page's JSX to classic React.createElement
+// without injecting React; provide it so invoking the server component works.
+(globalThis as unknown as { React: typeof React }).React = React;
+
+vi.mock("@/auth", () => ({ auth: vi.fn() }));
+vi.mock("@/lib/feature-flags", () => ({ CREWING_ENABLED: true, INVENTORY_ENABLED: true }));
+vi.mock("next/navigation", () => ({ redirect: vi.fn(), notFound: vi.fn() }));
+// The client component is irrelevant to this test — we read element.props directly.
+vi.mock("@/app/(portal)/crewing/crew/[id]/crew-profile", () => ({ CrewProfile: () => null }));
+
+import { auth } from "@/auth";
+import { db } from "@/lib/db";
+import CrewProfilePage from "@/app/(portal)/crewing/crew/[id]/page";
+import { makeSession } from "./helpers";
+import type { Role } from "@prisma/client";
+
+const AADHAAR = "123456789012";
+const PAN = "ABCDE1234F";
+
+let crewId: string;
+const as = (role: Role) =>
+  vi.mocked(auth as unknown as () => Promise<unknown>).mockResolvedValue(makeSession(`u-${role}`, role));
+
+// Pull the documents prop the page would pass to the client component.
+async function docsFor(role: Role) {
+  as(role);
+  const element = (await CrewProfilePage({ params: Promise.resolve({ id: crewId }) })) as {
+    props: { documents: Array<{ docType: string; number: string | null }> };
+  };
+  return element.props.documents;
+}
+const numberFor = (docs: Array<{ docType: string; number: string | null }>, docType: string) =>
+  docs.find((d) => d.docType === docType)?.number ?? null;
+
+beforeAll(async () => {
+  const c = await db.crewMember.create({
+    data: { name: "PII Crew", status: "EMPLOYEE", type: "NEW", source: "CAREERS", employeeId: `CRW-PII${Date.now() % 100000}` },
+  });
+  crewId = c.id;
+  await db.seafarerDocument.createMany({
+    data: [
+      { crewMemberId: c.id, docType: "AADHAAR", number: AADHAAR },
+      { crewMemberId: c.id, docType: "PAN", number: PAN },
+      { crewMemberId: c.id, docType: "PASSPORT", number: "P1234567" },
+    ],
+  });
+});
+
+afterEach(() => vi.clearAllMocks());
+
+afterAll(async () => {
+  await db.seafarerDocument.deleteMany({ where: { crewMemberId: crewId } });
+  await db.crewMember.deleteMany({ where: { id: crewId } });
+});
+
+describe("crew profile — identity-document masking (server-side)", () => {
+  it("masks Aadhaar/PAN for a MANAGER", async () => {
+    const docs = await docsFor("MANAGER");
+    expect(numberFor(docs, "AADHAAR")).toBe("•••• 9012");
+    expect(numberFor(docs, "PAN")).toBe("•••• 234F");
+    // Non-identity documents are not restricted.
+    expect(numberFor(docs, "PASSPORT")).toBe("P1234567");
+  });
+
+  it("masks Aadhaar/PAN for SITE_STAFF and the MPO too", async () => {
+    expect(numberFor(await docsFor("SITE_STAFF"), "AADHAAR")).toBe("•••• 9012");
+    expect(numberFor(await docsFor("MANNING"), "PAN")).toBe("•••• 234F");
+  });
+
+  it("shows Aadhaar/PAN in full to ACCOUNTS and SUPERUSER", async () => {
+    const acc = await docsFor("ACCOUNTS");
+    expect(numberFor(acc, "AADHAAR")).toBe(AADHAAR);
+    expect(numberFor(acc, "PAN")).toBe(PAN);
+    expect(numberFor(await docsFor("SUPERUSER"), "AADHAAR")).toBe(AADHAAR);
+  });
+});
diff --git a/App/tests/unit/crew-pii.test.ts b/App/tests/unit/crew-pii.test.ts
index 0301f62..48fc080 100644
--- a/App/tests/unit/crew-pii.test.ts
+++ b/App/tests/unit/crew-pii.test.ts
@@ -1,5 +1,5 @@
 import { describe, it, expect } from "vitest";
-import { maskTail, canViewFullBankEpf, canViewSalary, bankEpfValue } from "@/lib/crew-pii";
+import { maskTail, canViewFullBankEpf, canViewSalary, bankEpfValue, documentNumberValue } from "@/lib/crew-pii";
 
 // PII visibility rules for the crew profile (Crewing-Implementation-Spec §6/§8.8).
 describe("crew PII masking", () => {
@@ -43,4 +43,25 @@ describe("crew PII masking", () => {
       expect(bankEpfValue(null, "ACCOUNTS")).toBe("—");
     });
   });
+
+  describe("documentNumberValue", () => {
+    it("masks Aadhaar/PAN numbers for non-privileged roles", () => {
+      expect(documentNumberValue("123456789012", "AADHAAR", "MANAGER")).toBe("•••• 9012");
+      expect(documentNumberValue("123456789012", "AADHAAR", "MANNING")).toBe("•••• 9012");
+      expect(documentNumberValue("ABCDE1234F", "PAN", "SITE_STAFF")).toBe("•••• 234F");
+    });
+    it("shows Aadhaar/PAN in full to Accounts and SuperUser", () => {
+      expect(documentNumberValue("123456789012", "AADHAAR", "ACCOUNTS")).toBe("123456789012");
+      expect(documentNumberValue("ABCDE1234F", "PAN", "SUPERUSER")).toBe("ABCDE1234F");
+    });
+    it("does not restrict non-identity documents for any role", () => {
+      expect(documentNumberValue("P1234567", "PASSPORT", "SITE_STAFF")).toBe("P1234567");
+      expect(documentNumberValue("CDC-99", "CDC", "MANNING")).toBe("CDC-99");
+      expect(documentNumberValue("STCW-1", "STCW", "MANAGER")).toBe("STCW-1");
+    });
+    it("returns null for an empty number regardless of type/role", () => {
+      expect(documentNumberValue(null, "AADHAAR", "ACCOUNTS")).toBeNull();
+      expect(documentNumberValue("", "PASSPORT", "MANAGER")).toBeNull();
+    });
+  });
 });