IT-003Islands and topside
Dive Kit and Paperwork in the Last Three Months
What to cancel, ship and carry in hand luggage during the final three months before moving overseas, including a full set of dive gear.
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The last three months before a move overseas are a sequence of cancellations, transfers and shipments, not a single event. Give notice at work first, because the date it produces sets every other deadline. Then work outward: housing, utilities, resident paperwork, freight, and finally the bag that flies with the diver.
What has to be cancelled or transferred in the last three months before leaving?
Start with the contract that has the longest notice period. In Japan, an ordinary fixed-term lease usually requires one month of notice, and many contracts specify more, so the written notice date should be confirmed against the lease itself rather than assumed. Rental agents commonly ask for the move-out date in writing, followed by a joint inspection and a final settlement of deposit, cleaning and any repair charges.
Utilities are separate contracts, not part of the lease. Electricity, gas, water, internet and mobile phone each need a closing date, and the gas and water closings often require a visit or a meter reading on the day. A mobile number tied to a bank account or a two-factor login should be moved last, after the replacement number exists, or the account becomes hard to reach from abroad.
Resident paperwork runs in parallel. The move-out notification at the municipal office, the return of the residence card at the airport on departure, and the health insurance withdrawal are three different steps at three different counters. A checklist for leaving Japan is useful here because the order matters more than the individual items. Pension refund paperwork, income tax for the departure year and residence tax for the previous year are usually settled after the flight, from abroad, with forms that must be filed within set windows.
How do you ship a full set of dive gear overseas without losing it?
A regulator, a buoyancy compensator, a wetsuit, fins, mask, computer and torch occupy roughly one large suitcase of volume and a meaningful share of the weight allowance. Two decisions govern the shipment: whether the gear travels as accompanied baggage or as freight, and how the cylinder is handled.
A scuba cylinder is a pressure vessel and is treated as dangerous goods. It cannot be shipped full, and in most cases it cannot be shipped at all without the valve removed and the interior verified as open to atmosphere, because a closed vessel that once held compressed gas is treated as a hazard regardless of its current pressure. The practical answer for most movers is to sell or leave the cylinder and ship everything else. IATA dangerous goods rules and the individual airline's own conditions are the authority here, and they differ between carriers.
For the rest of the kit, freight by sea is cheaper per kilogram and slower, air freight is faster and dearer, and accompanied baggage is fastest but capped by the ticket. Regulators and computers are the items most often recommended for hand luggage, not because they are fragile but because they are expensive to replace and hard to insure in transit. A wetsuit is bulky and light, so it belongs in the freight or the checked bag.
Label every case inside and out with a name, a destination address and a contact number that will still work after the move. Photograph the contents before sealing. Marine insurance for household goods usually excludes or limits high-value sporting equipment unless it is listed separately, so the gear should appear as named items with a declared value on the inventory.
What paperwork has to be settled before the flight?
Work notice, the lease settlement, the utility closings and the municipal move-out notification are the four that block everything else. After those, the documents that matter are the ones that are hard to obtain once the person is no longer resident: tax records, pension records, a certificate of employment, and the final payslips.
Bank accounts are the common trap. Closing a Japanese account from abroad is difficult, and keeping it open requires a registered address and a working phone number. The usual approach is to keep one account open with a trusted contact or a forwarding arrangement, and to close the rest before departure. Credit cards issued in Japan are often cancelled automatically once the registered address lapses.
Keep a physical folder with the residence card, passport, tickets, insurance certificates for the shipment, and printed copies of the tax and pension forms. Digital copies in cloud storage are useful, but a border officer or a shipping agent will want paper.
What goes in hand luggage on a dive move?
Hand luggage should carry the items that stop a trip if they are lost: passport, residence card, tickets, medication, the dive computer, and the regulator if it fits. A regulator is small, dense and expensive, which makes it a poor candidate for a freight container and a good one for a cabin bag.
Batteries are the second constraint. Spare lithium batteries for a dive torch or a camera must travel in hand luggage, not in checked baggage, under IATA rules that most airlines apply. A torch with the batteries installed and locked off is usually acceptable in checked baggage, but the spare cells are not.
A mask and a computer in the cabin bag also mean the diver can take a single local dive on arrival without unpacking the shipment, which is often the first practical test that the gear arrived intact.
The insurance gap in transit
There is a window between the day the household policy ends and the day the shipment is delivered. Contents insurance for a home usually stops when the home is vacated, and marine transit cover starts when the freight is accepted, so the two rarely overlap cleanly.
Ask the mover for the transit policy in writing before the pickup date, and check three things: the per-item limit, whether named sporting equipment is covered, and the excess. Dive gear is often caught by a per-item cap that is lower than the replacement cost of a regulator and computer together.
What this does not settle
Notice periods, freight rules and tax windows vary by lease, carrier and municipality, and none of them can be confirmed from a general article. The dates that matter come from the lease, the airline's dangerous goods page and the municipal office. The sequence above is the order of operations, not a substitute for those documents.


