A. shoring, blocking off, B. seizing, lashing,: C. upright 1. side ceiling, side sparring, cargo battens, grating (not shown), 2. Umber boards, 3. floor ceiling, 4. hatch coaming, 5. hatchway, 6. upper 'tweendeck, 7. lower 'tweendeck. 8. lower hold (LH), hold, hatch, 6+7+8= hatch h = deckhead, headroom, h' = head under beams,
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