DP Mini Guide: ASOG — Green to Yellow

Crew Connect DP Academy · Mini Guide 09

ASOG — Green to Yellow

Topic: Operational Activity Planning · Sub-topic: ASOG/CAM/TAM  ·  Level: DPO / Senior DPO / Master  ·  Read time: 8 min

1. What / Why / How

Your Activity Specific Operating Guideline (ASOG) sets status triggers and required actions for the specific vessel and activity, and relates to CAM (Critical Activity Mode) and TAM (Task Appropriate Mode). It is not a generic industry document — content is activity- and vessel-specific by design.

2. Recognition / Risk / But

Watch for: an approaching or exceeded trigger threshold, degraded equipment, a PRS loss, an environmental trend, or a change in the task itself.

But: a Green → Yellow transition is not generic across vessels, and doesn't by itself prescribe a universal action — what it actually requires lives in your vessel's own ASOG document, not in general DP knowledge.

3. Now / What next / Decision / Why

Identify the exact approved ASOG row that applies, complete its stated checks/actions, notify the named stakeholders it specifies, and determine task status accordingly — recording the state and reasons as required.

4. Consequence / Reassess / Escalate

A Yellow-band control isn't completed before another trigger appears. Recognise the accumulated exposure this creates, rather than treating each trigger as an isolated, independently-resolved event.

5. Recover / Verify / Human factor

Return to a lower status only when the ASOG's actual exit conditions are met and evidence is recorded — not when conditions simply feel better. Trap: authority-gradient pressure when a client asks to "just finish this lift first."

Sources: IMO MSC.1/Circ.1580 (operational checks), IMCA M220 Rev.3 (ASOG/CAM/TAM), IMCA IN 1618 (ASOG as decision-support tool). This guide is educational content, not a substitute for accredited DP training, vessel-specific FMEA/ASOG, or full-mission simulator assessment. Crew Connect never infers compliance with a specific vessel's applicable requirements — always verify against your own approved documents.