A 24-vessel fleet trading internationally tracks more than 1,200 individual deadlines per year. Each vessel carries 50 or more statutory certificates with their own expiry dates. Each vessel runs an annual ISM internal audit per Element 12 plus flag state DOC verification annually plus SMC intermediate verification between the 2nd and 3rd anniversary. Each vessel runs a class annual survey within plus-or-minus 3 months of anniversary plus intermediate hull survey at 2.5 years plus renewal at 5 years. Each vessel runs monthly fire drills, abandon ship drills, oil pollution drills, security drills. Each vessel has a 5-year Basic Safety Training refresher per officer. Cargo Securing Manual reviews. Each vessel may be subject to a Paris MOU Concentrated Inspection Campaign window — 1 September to 30 November 2026 for Cargo Securing. A missed deadline is not a forgotten task. A missed deadline is a detention. A missed SMC intermediate verification can lead to certificate withdrawal. A lapsed seafarer medical disqualifies the crew member from duty mid-voyage. A missed CIC pre-arrival check is a 60% probability of a PSC finding given Q1 2026 data. Spreadsheets and email reminders cannot keep 1,200 deadlines reconciled across a 24-vessel fleet. Compliance calendar software replaces deadline drift with anniversary-window enforcement, 90/30/expiry alerts, per-vessel deadline calculation, and fleet-wide reconciliation. Book a 30-minute compliance calendar demo to see every deadline on your fleet sorted by urgency.
Compliance Calendar Software · 2026
Every Deadline Across Every Vessel. Sorted By Urgency. Reconciled In One Calendar.
1,200+ annual deadlines per 24-vessel fleet — certificates, surveys, audits, drills, refresher training. One calendar. Days countdown per item. Owner accountability.
Fleet Critical Deadlines · Next 90 Days
7 Action Items
M/V Pacific Star
CoC · 2/O Renewal
18d
Crew rotation + flag endorsement
M/V Northern Lights
IOPP Certificate Renewal
22d
RO survey scheduling
M/V Atlantic Bridge
ISM Internal Audit
38d
Internal auditor + scope plan
M/V Pacific Star
Class Annual Survey
42d
Survey booking + pre-pack
M/V Gulf Champion
BST Refresher · Master
52d
Training centre booking
M/V Northern Lights
SMC Intermediate Verification
71d
DPA audit prep + flag notification
M/V Atlantic Bridge
CIC Cargo Securing Window
86d
CSM review + crew brief
All deadlines assigned · 0 overdue · Average lead time 92 days
The Five Deadline Types Every Fleet Tracks
Compliance calendar software tracks five distinct deadline types that operate on different cadences with different consequences for missing the date. Each type requires its own alert discipline, its own owner, and its own pre-deadline workflow. Book a deadline-types demo to see all five types reconciled on your fleet.
01
Certificates
50+ per vessel
Statutory certificates with hard expiry dates — Cargo Ship Safety Construction, Safety Equipment, Safety Radio, ISM DOC and SMC, ISPS ISSC, IOPP, IAPP, ISPP, IEEC, BCH, IGC, Continuous Synopsis Record, Document of Authorization. Crew CoCs, CoPs, GMDSS, medical fitness.
02
Surveys
±3 month anniversary windows
SOLAS statutory surveys — Initial, Annual, Intermediate, Renewal — per Cargo Ship Safety Construction, Equipment, Radio certificates. IOPP intermediate and renewal. Class surveys (annual, intermediate, special). Each runs on anniversary cycle with ±3 month windows.
03
Audits
5 streams per ISM Element 12
Internal audit ≤12 months per ISM Element 12. Management review annually. DOC annual verification flag state. SMC intermediate verification between 2nd and 3rd anniversary. ISPS intermediate. SIRE 2.0, CDI, RightShip vetting. P&I condition surveys.
04
Drills
Monthly + quarterly recurring
Fire drill monthly per SOLAS III/19. Abandon ship drill monthly. Steering gear test weekly. Emergency generator test monthly. Lifeboat lowering quarterly. ISPS security drills 3-monthly. Oil pollution drills quarterly. Enclosed space rescue drills bi-monthly.
05
Refresher Training
5-year STCW cycle
Basic Safety Training (PST, FPFF) refresher 5-year per Manila 2010. Advanced Firefighting refresher 5-year. PSCRB refresher 5-year. Medical First Aid and Medical Care 5-year. Security Officer 5-year. Tanker Advanced refresher OR 3 months sea service 5-year.
The Anniversary Window Mechanics That Govern Survey Dates
The SOLAS Harmonized System of Survey and Certification uses anniversary windows of ±3 months for most statutory surveys. The mechanics are observable but routinely misunderstood. Missing the window invalidates the certificate even if the survey happens days later. Five mechanics below define the discipline every compliance calendar must enforce.
M1
Anniversary Date Fixed
The anniversary date is fixed by the original certificate issue date and does not drift. A survey conducted in February with an October anniversary does not reset to February anniversary — the next survey window remains October ±3 months.
M2
±3 Month Window
Annual surveys must occur within 3 months before or 3 months after the anniversary date — a 6-month total window. Survey outside the window invalidates the certificate's continuous validity.
M3
Renewal Within 3 Months
Renewal surveys can be conducted up to 3 months before certificate expiry without affecting the next renewal date. Conducted earlier, the new certificate starts from completion. Conducted after expiry, the certificate expires.
M4
Intermediate Survey Window
SMC intermediate verification conducted between 2nd and 3rd anniversary. Class intermediate hull survey at 2.5 years. The window for intermediate is broader than annual but still bounded — outside the window invalidates intermediate status.
M5
PSC Verifies The Window
PSC inspector verifies that surveys were conducted within their windows. Survey dates examined against anniversary dates. Outside-window surveys trigger detention regardless of whether the technical survey was complete and the certificate appears current.
The Deadline Type And Alert Matrix
The matrix below maps each deadline type to its anniversary window, alert discipline, and the consequence of missing the deadline. Mobile users scroll horizontally for the full view.
| Deadline Type | Window | Alert Cadence | Owner | Consequence Of Miss |
|---|---|---|---|---|
| Certificate expiry | Hard expiry | 90 / 30 / expiry day | DPA + Master | Certificate invalid · PSC detention risk |
| Annual statutory survey | ±3 months anniversary | 90 / 30 / window-end | Technical Supt + RO | Certificate invalid · PSC detention |
| Intermediate survey | 2nd-3rd anniv year | 90 / 30 / window-end | Technical Supt + Class | Certificate invalid · PSC detention |
| Renewal survey | Within 3 months of expiry | 180 / 90 / 30 / expiry | Technical Supt + Class | Vessel out of service · re-certification |
| ISM internal audit | ≤12 months interval | 60 / 30 / overdue | DPA + Internal Auditor | Major NC at next external audit |
| DOC annual verification | ±3 months anniversary | 90 / 30 / window-end | DPA + Flag or RO | DOC withdrawn · fleet impact |
| SMC intermediate verification | 2nd-3rd anniv year | 90 / 30 / window-end | DPA + Flag or RO | SMC withdrawn · vessel impact |
| Fire / abandon ship drill | Monthly | 7-day rolling alert | Master + Chief Officer | SOLAS III/19 finding · PSC |
| BST refresher | 5-year cycle | 180 / 90 / 30 / expiry | Crewing + Seafarer | Seafarer ungifted · STCW finding |
| Medical fitness | Max 2 years (1yr u/18) | 90 / 30 / expiry | Crewing + Seafarer | Crew member disembark · gap |
| CIC inspection window | 3-month CIC period | 180 / 90 / 30 / opens | DPA + Master | 60%+ PSC finding probability |
| Vetting inspection | Per charter cycle | 60 / 30 / boarding | Marine Supt + Master | Failed vetting · lost charter revenue |
The 90/30/Expiry Alert Discipline
The single greatest predictor of deadline outcome is the alert discipline. Alerts that arrive on the day of expiry are not alerts — they are death notices. Six alert disciplines below separate calendars that prevent misses from calendars that record them. Book an alert discipline demo to see Marine Inspection's escalation chain on real fleet data.
A1
Pre-Alert At 90 Days
First alert 90 days out triggers planning — booking surveyor, scheduling audit, booking refresher course, securing crew rotation. 90 days is enough lead time to handle any deadline without panic.
A2
Action Alert At 30 Days
Second alert at 30 days triggers escalation if first alert produced no action. Owner notified. DPA visibility. Backup paths considered. The deadline becomes a critical priority.
A3
Daily Countdown In Last 7 Days
Final 7 days countdown daily. Each morning shows days remaining. Each missed action visible to owner and DPA. Escalation chain triggers automatically if approaching expiry without action.
A4
Overdue Visible Across Fleet
Overdue deadlines visible on fleet view. DPA dashboard surfaces overdue items per vessel. Senior management visibility. The overdue list shrinks rather than grows.
A5
Escalation Chain Documented
Each deadline type has documented escalation chain — Master to Marine Supt to Technical Supt to DPA to Senior Management. Escalation triggers visible. No deadline drops between accountability layers.
A6
Closure Verified, Not Asserted
When a deadline is met, closure verified with evidence — survey report, certificate scan, training certificate, audit close-out. Asserted closure without evidence fails audit. The calendar stays clean.
The Cost Of A Missed Deadline
A missed compliance deadline is not a productivity loss — it is a cost event. The matrix below maps each deadline miss to its typical cost range and the cascading impact. The procurement case for compliance calendar software is in this matrix. Mobile users scroll horizontally for the full view.
| Deadline Missed | Direct Cost | Cascading Impact | Recovery Time |
|---|---|---|---|
| Statutory certificate expired | $30,000 – $150,000 | PSC detention · charter cancellation | 3 – 14 days vessel idle |
| Survey conducted outside window | $50,000 – $200,000 | Certificate invalid · re-survey required | 5 – 21 days vessel idle |
| Class survey overdue | $80,000 – $400,000 | Class suspended · insurance void | 14 – 60 days vessel idle |
| ISM internal audit missed | $5,000 audit cost + finding | Major NC at next external audit | 3 months CAPA window |
| DOC annual verification overdue | $100,000 – $500,000 | DOC withdrawn · fleet-wide SMC impact | 30 – 90 days re-certification |
| SMC intermediate missed | $50,000 – $250,000 | SMC withdrawn · vessel uncovered | 14 – 45 days vessel idle |
| Crew medical lapsed at sea | $15,000 – $80,000 | Crew disembark · replacement crew · STCW finding | 3 – 14 days operational gap |
| BST refresher overdue | $8,000 – $25,000 + finding | Seafarer unrated · vetting impact | 2 – 4 weeks training cycle |
| CIC unprepared | $60,000 – $500,000 | PSC finding · CIC-related detention | 1 – 10 days vessel idle |
| Vetting inspection failed | $200,000 – $2,000,000 | Charter lost · revenue impact | 1 – 12 months commercial recovery |
Compliance Calendar Demo · 30 Minutes
See 1,200 Annual Deadlines Sorted By Urgency On Your Real Fleet
A 30-minute walkthrough with a Marine Inspection product expert. Bring your current certificate register, survey schedule, and crew matrix from one vessel. Walk through five-deadline-type coverage, anniversary window mechanics, 90/30/expiry alert discipline, cost-of-miss exposure, and fleet-wide reconciliation on real data.
No sales pressure · Free trial after the demo · or start a free trial first
Fleet-Wide Vs Vessel-Specific Calendar Views
A compliance calendar serves two distinct users on the same underlying data. The DPA needs the fleet-wide view to surface overdue items across multiple vessels. The Master needs the vessel-specific view to see this week's actionable items. Six view disciplines below separate calendars that serve both views well from calendars that fail one user to serve the other.
V1
Fleet Critical View
DPA dashboard surfaces the top critical deadlines across the entire fleet sorted by urgency. Days countdown visible. Vessel, deadline type, owner shown. The DPA's morning routine — what to act on today across 24 vessels.
V2
Vessel-Specific View
Master and Chief Officer see one vessel's deadlines on a single screen. This week, this month, next 90 days. Filterable by deadline type. Actionable from the bridge.
V3
Owner View
Each deadline has a named owner. The owner sees only their assigned deadlines. Technical Supt sees surveys. DPA sees audits. Marine Supt sees vetting. Crewing sees medicals.
V4
Calendar View
Traditional calendar view by month with deadlines plotted on dates. Visual rhythm of busy and quiet months. Drag-and-drop reschedule (where regulatory window allows). Print-friendly export for offline reference.
V5
Timeline View
Horizontal timeline with vessels as rows and time as columns. Heavy-deadline months visible as cluster patterns. Drydock planning conflicts surfaced. Charter window optimization. Multi-year horizon.
V6
Overdue View
Dedicated view for overdue items only. Senior management visibility. Days overdue per item. Owner and escalation chain. The overdue list is the dashboard nobody wants to populate.
Marine Inspection's Compliance Calendar Architecture
Marine Inspection's compliance calendar is structured to handle 1,200+ annual deadlines across a 24-vessel fleet with five-deadline-type coverage, anniversary window enforcement, 90/30/expiry alert discipline, and dual fleet-wide and vessel-specific views. Four architectural layers handle the operational complexity. Book the calendar architecture walkthrough demo to apply the platform to your fleet. Start a free trial to evaluate the calendar before any contract.
Layer 1
Five-Type Deadline Engine
Certificates (50+ per vessel), surveys (anniversary windows), audits (5 streams), drills (monthly + quarterly), refresher training (5-year cycles) — all tracked as individual items with type-specific workflow. Per-vessel deadline calculation from regulatory base + vessel particulars.
Layer 2
Anniversary Window Calculator
SOLAS Harmonized System anniversary windows enforced — ±3 months annual, 2nd-3rd anniversary intermediate, within 3 months renewal. Window-end alerts trigger before regulatory limit. PSC verification expectations matched.
Layer 3
90/30/Expiry Alert Discipline
Pre-alert at 90 days, action alert at 30 days, daily countdown in final 7 days, escalation chain documented per deadline type, overdue visible across fleet, closure verified with evidence not asserted.
Layer 4
Dual View Engine
Fleet critical view for DPA, vessel-specific view for Master, owner view per role, calendar view by month, timeline view multi-vessel, overdue view for senior management — six views on the same underlying deadline data.
Frequently Asked Questions
What does compliance calendar software actually track?
A compliance calendar tracks 1,200+ annual deadlines across a typical 24-vessel fleet covering five distinct deadline types. Certificates with 50+ per vessel including statutory certificates with hard expiry dates — Cargo Ship Safety Construction, Safety Equipment, Safety Radio, ISM DOC and SMC, ISPS ISSC, IOPP, IAPP, ISPP, IEEC, plus crew CoCs, CoPs, GMDSS, medical fitness. Surveys with ±3 month anniversary windows including SOLAS Initial, Annual, Intermediate, Renewal cycles per Cargo Ship Safety Construction, Equipment, Radio certificates, IOPP intermediate and renewal, class surveys (annual, intermediate, special). Audits across 5 streams per ISM Element 12 including internal audit ≤12 months, management review annually, DOC annual verification, SMC intermediate verification, ISPS intermediate, SIRE 2.0, CDI, RightShip vetting, P&I condition surveys. Drills with monthly + quarterly recurring covering fire drill monthly, abandon ship monthly, steering gear test weekly, emergency generator monthly, lifeboat lowering quarterly, ISPS 3-monthly. Refresher Training on 5-year STCW cycle including BST, AFF, PSCRB, Medical, Security Officer, Tanker Advanced.
How do anniversary windows work?
The SOLAS Harmonized System of Survey and Certification uses anniversary windows of ±3 months for most statutory surveys. Five mechanics govern the discipline. Anniversary Date Fixed — the anniversary is fixed by the original certificate issue date and does not drift, a survey conducted in February with an October anniversary does not reset to February anniversary as the next survey window remains October ±3 months. ±3 Month Window — annual surveys must occur within 3 months before or 3 months after the anniversary date for a 6-month total window, survey outside the window invalidates the certificate's continuous validity. Renewal Within 3 Months — renewal surveys can be conducted up to 3 months before certificate expiry without affecting the next renewal date. Intermediate Survey Window — SMC intermediate verification conducted between 2nd and 3rd anniversary, class intermediate hull survey at 2.5 years. PSC Verifies The Window — PSC inspector verifies that surveys were conducted within their windows with outside-window surveys triggering detention regardless of whether technical survey was complete and certificate appears current.
What is the 90/30/expiry alert discipline?
The 90/30/expiry alert discipline is the cadence that prevents deadline misses. Six disciplines apply. Pre-Alert At 90 Days — first alert 90 days out triggers planning including booking surveyor, scheduling audit, booking refresher course, securing crew rotation, with 90 days enough lead time to handle any deadline without panic. Action Alert At 30 Days — second alert at 30 days triggers escalation if first alert produced no action with owner notified and DPA visibility. Daily Countdown In Last 7 Days — final 7 days countdown daily with each morning showing days remaining and escalation chain triggering automatically if approaching expiry without action. Overdue Visible Across Fleet — overdue deadlines visible on fleet view, DPA dashboard surfaces overdue items per vessel, senior management visibility. Escalation Chain Documented — each deadline type has documented chain Master to Marine Supt to Technical Supt to DPA to Senior Management. Closure Verified Not Asserted — when a deadline is met closure verified with evidence including survey report, certificate scan, training certificate, audit close-out.
What does a missed deadline actually cost?
A missed compliance deadline cascades into substantial direct cost plus operational impact. Statutory certificate expired typically costs $30,000-$150,000 direct with PSC detention and charter cancellation cascading, 3-14 days vessel idle. Survey conducted outside window costs $50,000-$200,000 with certificate invalid and re-survey required, 5-21 days idle. Class survey overdue costs $80,000-$400,000 with class suspended and insurance void, 14-60 days idle. DOC annual verification overdue costs $100,000-$500,000 with DOC withdrawn and fleet-wide SMC impact, 30-90 days re-certification. SMC intermediate missed costs $50,000-$250,000 with SMC withdrawn, 14-45 days idle. Crew medical lapsed at sea costs $15,000-$80,000 with crew disembark plus replacement plus STCW finding. BST refresher overdue costs $8,000-$25,000 plus finding with seafarer unrated and vetting impact. CIC unprepared costs $60,000-$500,000 with PSC finding and CIC-related detention. Vetting inspection failed costs $200,000-$2,000,000 with charter lost and 1-12 months commercial recovery.
How does the calendar serve both DPA and Master?
A compliance calendar serves two distinct users on the same underlying data through six view disciplines. Fleet Critical View — DPA dashboard surfaces the top critical deadlines across the entire fleet sorted by urgency with days countdown visible and vessel, deadline type, owner shown, the DPA's morning routine for what to act on today across 24 vessels. Vessel-Specific View — Master and Chief Officer see one vessel's deadlines on a single screen with this week, this month, next 90 days filterable by deadline type and actionable from the bridge. Owner View — each deadline has a named owner with the owner seeing only their assigned deadlines, Technical Supt sees surveys, DPA sees audits, Marine Supt sees vetting, Crewing sees medicals. Calendar View — traditional calendar by month with deadlines plotted on dates and visual rhythm of busy and quiet months. Timeline View — horizontal timeline with vessels as rows and time as columns with heavy-deadline months visible as clusters and drydock planning conflicts surfaced. Overdue View — dedicated view for overdue items only with senior management visibility.
How does the calendar calculate per-vessel deadlines?
Per-vessel deadline calculation is the heart of compliance calendar software. Each vessel has its own anniversary dates from original certificate issue, its own keel-laid date affecting amendment applicability, its own RO and flag determining survey workflow, its own crew composition with individual refresher cycles, its own trade routes affecting CIC and ECA exposure, its own equipment installed affecting type-specific regulations. From regulatory base plus vessel particulars, the calendar calculates deadlines per vessel. For example PFOS foam ban applies at first survey after 1 January 2026 — for a 20-ship fleet this produces 20 different deadlines spread across 2026 based on each vessel's survey schedule. Inclinometer carriage applies to containerships and bulk carriers 3,000+ GT — surfaced only on qualifying vessels. Medical fitness valid maximum 2 years — calculated per individual seafarer with crewing rotation considered. The calendar does the calculation rather than asking the operator to do it. The result is per-vessel deadline accuracy that spreadsheets cannot achieve at scale.
How does Marine Inspection's compliance calendar work?
Marine Inspection's compliance calendar is structured in four architectural layers. Layer 1 Five-Type Deadline Engine — certificates (50+ per vessel), surveys (anniversary windows), audits (5 streams), drills (monthly + quarterly), refresher training (5-year cycles) all tracked as individual items with type-specific workflow and per-vessel deadline calculation from regulatory base plus vessel particulars. Layer 2 Anniversary Window Calculator — SOLAS Harmonized System anniversary windows enforced including ±3 months annual, 2nd-3rd anniversary intermediate, within 3 months renewal with window-end alerts triggering before regulatory limit and PSC verification expectations matched. Layer 3 90/30/Expiry Alert Discipline — pre-alert at 90 days, action alert at 30 days, daily countdown in final 7 days, escalation chain documented per deadline type, overdue visible across fleet, closure verified with evidence not asserted. Layer 4 Dual View Engine — fleet critical view for DPA, vessel-specific view for Master, owner view per role, calendar view by month, timeline view multi-vessel, overdue view for senior management. 6-12 week deployment with free trial available before any commitment.
Never Miss A Deadline Again
1,200 Deadlines. 24 Vessels. One Calendar. Zero Overdue.
Five-type deadline engine, five-mechanic anniversary window enforcement, twelve-row deadline alert matrix, six-discipline alert chain, ten-row cost-of-miss exposure, six-view dual engine, four-layer compliance calendar architecture — all in one fleet-wide compliance calendar built for the 2026 deadline reality. Book a 30-minute calendar demo on your actual fleet.
30 min · with compliance specialist · bring your certificate register · or start a free trial first
