Grade II listed · Gosport

Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works)

Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works) is a Grade II listed building in Gosport, first listed on 26 August 2022. It is one of 180 Grade II entries among 202 listed buildings in Gosport; 98% of Gosport’s current entries were listed before it.

List entry
Field	Value
Name	Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works)
Grade	Grade II — special interest
List entry number	1479229
Date first listed	26 August 2022
Local planning authority	Gosport
Location	50.78451, -1.13125 (map)
Official record	Historic England list entry 1479229

Planning works on this listed building?

Planium checks which consents Gosport will require for your works on Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works), lists what the heritage statement must cover and drafts the application text.

Ask Planium what consent you need

What the grade means for works

Grade II buildings are of special interest and make up over 90% of listed buildings in England. Most alterations, extensions and many internal changes still need listed building consent from the council.

The protection covers the whole building, inside and out, plus fixtures and attached structures. Typical works that need consent: replacing windows or doors, removing walls or historic fabric, changing roof coverings, installing solar panels or external insulation, and adding extensions.

Listed buildings near Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works)

Name	Grade	Distance
No. 2 Cavitation Tunnel (Buildings 46 and 47), Haslar Road, Gosport	II	98 m
Number 2 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works)	II	172 m
Haslar Terrace, Royal Naval Hospital, Haslar	II	286 m
HMS Thunderer Memorial	II	319 m
HMS Eurydice Memorial	II*	324 m
Manoeuvring Tank (now known as Ocean Basin), Haslar Marine Technology Park (Former Admiralty Experiment Works)	II	342 m
Submariners' Memorial	II	377 m
HMS L55 Memorial	II	401 m
Gunboat Yard boundary walls, watchtowers and gates	II*	412 m
Water Tower, Royal Naval Hospital, Haslar	II	414 m

Frequently asked questions

Is Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works) listed?

Yes. Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works) is on the National Heritage List for England as a Grade II listed building, list entry number 1479229, first listed on 26 August 2022. The full list entry with its description and map is on Historic England’s website.

Do I need consent for works to Number 1 Ship Tank, Haslar Marine Technology Park (former Admiralty Experiment Works)?

Works that affect its character as a building of special architectural or historic interest — inside or out — need listed building consent from Gosport, in addition to any planning permission or building regulations approval. Like-for-like repairs often do not, but confirm with the council’s conservation officer before you start.

Source: National Heritage List for England, © Historic England 2026, via planning.data.gov.uk. Contains Ordnance Survey data © Crown copyright and database right. Licensed under the Open Government Licence v3.0. Retrieved 12 October 2026. Local authority assigned from the list entry point. This page is a summary — the legal record is the official list entry.