It is common knowledge that electronics change continuously and that components can go into obsolescence over a remarkably short time. Considering this, HMAP goes all out to design products that utilize the very latest componentry and so forestall their becoming outdated for as long as possible. Yet the finite nature of electronics remains so and for this reason, along with the compelling need to innovate, Highlander modernizes its products on a regular basis.
When a product is taken out of production due to the introduction of a newer model, HMAP undertakes to continue producing spare parts for it for as long as is reasonably possible. In most cases this time is set at ten years.
The current list of discontinued HMAP products is shown here below:
| Name and Model | Spare Parts Until |
| Voyage data recorder HLD-A | No longer available |
| Voyage data recorder HLD-A1 | No longer available |
| Voyage data recorder HLD-A2 | No longer available |
| Simplified voyage data recorder HLD-S | No longer available |
| Voyage data recorder HLD-B2 | 2023-12-31 |
| Simplified voyage data recorder HLD-S2 | 2023-12-31 |
